/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/insertion_sort-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 06:44:48,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 06:44:48,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 06:44:48,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 06:44:48,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 06:44:48,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 06:44:48,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 06:44:48,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 06:44:48,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 06:44:48,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 06:44:48,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 06:44:48,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 06:44:48,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 06:44:48,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 06:44:48,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 06:44:48,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 06:44:48,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 06:44:48,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 06:44:48,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 06:44:48,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 06:44:48,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 06:44:48,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 06:44:48,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 06:44:48,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 06:44:48,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 06:44:48,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 06:44:48,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 06:44:48,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 06:44:48,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 06:44:48,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 06:44:48,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 06:44:48,656 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 06:44:48,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 06:44:48,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 06:44:48,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 06:44:48,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 06:44:48,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 06:44:48,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 06:44:48,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 06:44:48,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:44:48,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 06:44:48,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 06:44:48,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 06:44:48,657 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 06:44:48,657 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 06:44:48,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 06:44:48,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 06:44:48,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 06:44:48,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 06:44:48,911 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 06:44:48,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/insertion_sort-2.c [2021-04-16 06:44:48,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9317c8779/fdf713ab5e854e899f2497cadf018289/FLAG277e42d69 [2021-04-16 06:44:49,275 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 06:44:49,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-2.c [2021-04-16 06:44:49,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9317c8779/fdf713ab5e854e899f2497cadf018289/FLAG277e42d69 [2021-04-16 06:44:49,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9317c8779/fdf713ab5e854e899f2497cadf018289 [2021-04-16 06:44:49,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 06:44:49,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 06:44:49,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 06:44:49,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 06:44:49,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 06:44:49,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:44:49" (1/1) ... [2021-04-16 06:44:49,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b37fc72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49, skipping insertion in model container [2021-04-16 06:44:49,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:44:49" (1/1) ... [2021-04-16 06:44:49,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 06:44:49,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 06:44:49,387 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-2.c[328,341] [2021-04-16 06:44:49,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:44:49,409 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 06:44:49,418 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-2.c[328,341] [2021-04-16 06:44:49,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:44:49,445 INFO L208 MainTranslator]: Completed translation [2021-04-16 06:44:49,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49 WrapperNode [2021-04-16 06:44:49,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 06:44:49,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 06:44:49,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 06:44:49,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 06:44:49,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49" (1/1) ... [2021-04-16 06:44:49,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49" (1/1) ... [2021-04-16 06:44:49,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49" (1/1) ... [2021-04-16 06:44:49,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49" (1/1) ... [2021-04-16 06:44:49,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49" (1/1) ... [2021-04-16 06:44:49,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49" (1/1) ... [2021-04-16 06:44:49,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49" (1/1) ... [2021-04-16 06:44:49,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 06:44:49,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 06:44:49,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 06:44:49,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 06:44:49,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:44:49,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 06:44:49,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 06:44:49,598 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 06:44:49,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 06:44:49,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 06:44:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 06:44:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 06:44:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 06:44:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 06:44:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 06:44:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-04-16 06:44:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 06:44:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 06:44:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 06:44:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 06:44:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 06:44:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 06:44:49,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 06:44:49,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 06:44:49,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 06:44:49,819 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-04-16 06:44:49,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:44:49 BoogieIcfgContainer [2021-04-16 06:44:49,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 06:44:49,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 06:44:49,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 06:44:49,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 06:44:49,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 06:44:49" (1/3) ... [2021-04-16 06:44:49,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0ec288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:44:49, skipping insertion in model container [2021-04-16 06:44:49,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:49" (2/3) ... [2021-04-16 06:44:49,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0ec288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:44:49, skipping insertion in model container [2021-04-16 06:44:49,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:44:49" (3/3) ... [2021-04-16 06:44:49,825 INFO L111 eAbstractionObserver]: Analyzing ICFG insertion_sort-2.c [2021-04-16 06:44:49,829 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 06:44:49,832 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 06:44:49,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 06:44:49,856 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 06:44:49,856 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 06:44:49,856 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 06:44:49,856 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 06:44:49,856 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 06:44:49,856 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 06:44:49,856 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 06:44:49,856 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 06:44:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:49,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-16 06:44:49,869 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:49,870 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:49,870 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:49,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1914549692, now seen corresponding path program 1 times [2021-04-16 06:44:49,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:49,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134714206] [2021-04-16 06:44:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:49,949 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:50,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134714206] [2021-04-16 06:44:50,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:50,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 06:44:50,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837964086] [2021-04-16 06:44:50,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 06:44:50,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:50,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 06:44:50,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:44:50,108 INFO L87 Difference]: Start difference. First operand has 31 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:50,186 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2021-04-16 06:44:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 06:44:50,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-04-16 06:44:50,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:50,191 INFO L225 Difference]: With dead ends: 54 [2021-04-16 06:44:50,191 INFO L226 Difference]: Without dead ends: 26 [2021-04-16 06:44:50,193 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:44:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-04-16 06:44:50,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-04-16 06:44:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-04-16 06:44:50,229 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 15 [2021-04-16 06:44:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:50,230 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-04-16 06:44:50,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,230 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-04-16 06:44:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-16 06:44:50,231 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:50,231 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:50,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 06:44:50,231 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:50,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:50,233 INFO L82 PathProgramCache]: Analyzing trace with hash 314290466, now seen corresponding path program 1 times [2021-04-16 06:44:50,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:50,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332925089] [2021-04-16 06:44:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:50,239 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:50,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,348 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-16 06:44:50,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:44:50,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:50,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332925089] [2021-04-16 06:44:50,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:50,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:44:50,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999278764] [2021-04-16 06:44:50,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:44:50,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:50,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:44:50,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:44:50,427 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:50,515 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-04-16 06:44:50,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:44:50,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-04-16 06:44:50,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:50,516 INFO L225 Difference]: With dead ends: 49 [2021-04-16 06:44:50,516 INFO L226 Difference]: Without dead ends: 28 [2021-04-16 06:44:50,517 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:44:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-04-16 06:44:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-04-16 06:44:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-04-16 06:44:50,522 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2021-04-16 06:44:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:50,522 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-04-16 06:44:50,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-04-16 06:44:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-16 06:44:50,523 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:50,523 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:50,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 06:44:50,523 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:50,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:50,523 INFO L82 PathProgramCache]: Analyzing trace with hash 408725728, now seen corresponding path program 1 times [2021-04-16 06:44:50,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:50,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721684503] [2021-04-16 06:44:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:50,535 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:50,537 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,585 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-04-16 06:44:50,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:44:50,594 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-04-16 06:44:50,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:44:50,600 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-04-16 06:44:50,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:44:50,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:44:50,658 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.6 percent of original size [2021-04-16 06:44:50,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:44:50,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:50,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721684503] [2021-04-16 06:44:50,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:50,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:44:50,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138631752] [2021-04-16 06:44:50,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:44:50,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:50,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:44:50,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:44:50,706 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:50,855 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2021-04-16 06:44:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:44:50,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-04-16 06:44:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:50,857 INFO L225 Difference]: With dead ends: 55 [2021-04-16 06:44:50,857 INFO L226 Difference]: Without dead ends: 36 [2021-04-16 06:44:50,859 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:44:50,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-04-16 06:44:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2021-04-16 06:44:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-04-16 06:44:50,872 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 17 [2021-04-16 06:44:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:50,872 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-04-16 06:44:50,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-04-16 06:44:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-16 06:44:50,874 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:50,874 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:50,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 06:44:50,874 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:50,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1080556849, now seen corresponding path program 1 times [2021-04-16 06:44:50,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:50,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941326293] [2021-04-16 06:44:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:50,881 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:50,882 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:51,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,044 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:44:51,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:44:51,058 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:44:51,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:44:51,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:51,066 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,073 INFO L142 QuantifierPusher]: treesize reduction 36, result has 56.1 percent of original size [2021-04-16 06:44:51,075 INFO L147 QuantifierPusher]: treesize reduction 7, result has 84.8 percent of original size 39 [2021-04-16 06:44:51,098 INFO L142 QuantifierPusher]: treesize reduction 35, result has 62.8 percent of original size [2021-04-16 06:44:51,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:44:51,134 INFO L142 QuantifierPusher]: treesize reduction 35, result has 66.3 percent of original size [2021-04-16 06:44:51,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:44:51,178 INFO L142 QuantifierPusher]: treesize reduction 35, result has 65.7 percent of original size [2021-04-16 06:44:51,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:44:51,217 INFO L142 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-04-16 06:44:51,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:44:51,236 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:44:51,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:44:51,248 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:44:51,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:44:51,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:51,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:51,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:51,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:51,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:51,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941326293] [2021-04-16 06:44:51,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:51,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:44:51,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457828905] [2021-04-16 06:44:51,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:44:51,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:51,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:44:51,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:44:51,331 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:51,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:51,736 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2021-04-16 06:44:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-16 06:44:51,737 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-04-16 06:44:51,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:51,741 INFO L225 Difference]: With dead ends: 65 [2021-04-16 06:44:51,742 INFO L226 Difference]: Without dead ends: 63 [2021-04-16 06:44:51,742 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 420.9ms TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:44:51,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-04-16 06:44:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2021-04-16 06:44:51,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2021-04-16 06:44:51,750 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 25 [2021-04-16 06:44:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:51,751 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2021-04-16 06:44:51,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2021-04-16 06:44:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-16 06:44:51,751 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:51,751 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:51,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-16 06:44:51,752 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:51,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1781621427, now seen corresponding path program 1 times [2021-04-16 06:44:51,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:51,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79629176] [2021-04-16 06:44:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:51,760 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:51,761 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:51,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:51,778 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-04-16 06:44:51,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:44:51,784 INFO L142 QuantifierPusher]: treesize reduction 6, result has 45.5 percent of original size [2021-04-16 06:44:51,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:51,789 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:51,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:51,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:51,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79629176] [2021-04-16 06:44:51,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:51,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:44:51,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199040697] [2021-04-16 06:44:51,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:44:51,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:51,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:44:51,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:44:51,830 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:51,902 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2021-04-16 06:44:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 06:44:51,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-04-16 06:44:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:51,905 INFO L225 Difference]: With dead ends: 82 [2021-04-16 06:44:51,905 INFO L226 Difference]: Without dead ends: 51 [2021-04-16 06:44:51,906 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:44:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-04-16 06:44:51,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2021-04-16 06:44:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2021-04-16 06:44:51,918 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 25 [2021-04-16 06:44:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:51,918 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2021-04-16 06:44:51,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2021-04-16 06:44:51,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-04-16 06:44:51,919 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:51,919 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:51,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-16 06:44:51,920 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:51,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:51,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1755898038, now seen corresponding path program 1 times [2021-04-16 06:44:51,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:51,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726558253] [2021-04-16 06:44:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:51,924 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:51,925 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:52,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:44:52,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:52,027 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,030 INFO L142 QuantifierPusher]: treesize reduction 14, result has 51.7 percent of original size [2021-04-16 06:44:52,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:44:52,038 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-04-16 06:44:52,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:44:52,051 INFO L142 QuantifierPusher]: treesize reduction 16, result has 69.2 percent of original size [2021-04-16 06:44:52,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:44:52,074 INFO L142 QuantifierPusher]: treesize reduction 32, result has 58.4 percent of original size [2021-04-16 06:44:52,075 INFO L147 QuantifierPusher]: treesize reduction 8, result has 82.2 percent of original size 37 [2021-04-16 06:44:52,096 INFO L142 QuantifierPusher]: treesize reduction 30, result has 67.4 percent of original size [2021-04-16 06:44:52,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:44:52,126 INFO L142 QuantifierPusher]: treesize reduction 30, result has 67.0 percent of original size [2021-04-16 06:44:52,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:44:52,155 INFO L142 QuantifierPusher]: treesize reduction 18, result has 51.4 percent of original size [2021-04-16 06:44:52,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:44:52,169 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:44:52,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:44:52,173 INFO L142 QuantifierPusher]: treesize reduction 41, result has 48.1 percent of original size [2021-04-16 06:44:52,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:44:52,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:52,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:52,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:52,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:52,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:52,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726558253] [2021-04-16 06:44:52,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:52,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:44:52,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449251900] [2021-04-16 06:44:52,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:44:52,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:52,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:44:52,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:44:52,272 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 17 states, 16 states have (on average 1.5) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:52,863 INFO L93 Difference]: Finished difference Result 125 states and 156 transitions. [2021-04-16 06:44:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-16 06:44:52,868 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.5) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-04-16 06:44:52,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:52,871 INFO L225 Difference]: With dead ends: 125 [2021-04-16 06:44:52,871 INFO L226 Difference]: Without dead ends: 94 [2021-04-16 06:44:52,872 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 494.6ms TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2021-04-16 06:44:52,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-04-16 06:44:52,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 50. [2021-04-16 06:44:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 43 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:52,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-04-16 06:44:52,880 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 28 [2021-04-16 06:44:52,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:52,880 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-04-16 06:44:52,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.5) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-04-16 06:44:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-04-16 06:44:52,881 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:52,881 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:52,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-16 06:44:52,881 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:52,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:52,881 INFO L82 PathProgramCache]: Analyzing trace with hash -990333180, now seen corresponding path program 2 times [2021-04-16 06:44:52,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:52,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595279891] [2021-04-16 06:44:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:52,891 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:52,893 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:52,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:52,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,948 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:44:52,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:44:52,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:44:52,965 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-04-16 06:44:52,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:44:52,972 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-04-16 06:44:52,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:44:52,995 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-04-16 06:44:52,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:53,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:53,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595279891] [2021-04-16 06:44:53,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:53,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:44:53,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076938755] [2021-04-16 06:44:53,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:44:53,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:53,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:44:53,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:44:53,020 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:53,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:53,127 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2021-04-16 06:44:53,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:44:53,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-04-16 06:44:53,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:53,129 INFO L225 Difference]: With dead ends: 125 [2021-04-16 06:44:53,129 INFO L226 Difference]: Without dead ends: 91 [2021-04-16 06:44:53,129 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 74.0ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:44:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-04-16 06:44:53,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 63. [2021-04-16 06:44:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 56 states have internal predecessors, (67), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2021-04-16 06:44:53,152 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 31 [2021-04-16 06:44:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:53,153 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2021-04-16 06:44:53,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2021-04-16 06:44:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-04-16 06:44:53,160 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:53,160 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:53,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-16 06:44:53,160 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:53,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:53,161 INFO L82 PathProgramCache]: Analyzing trace with hash -405243253, now seen corresponding path program 1 times [2021-04-16 06:44:53,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:53,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547513639] [2021-04-16 06:44:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:53,166 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:53,168 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:53,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:53,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,224 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:44:53,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:44:53,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:44:53,242 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-04-16 06:44:53,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:44:53,249 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-04-16 06:44:53,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:44:53,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:53,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-04-16 06:44:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:53,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:53,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547513639] [2021-04-16 06:44:53,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:53,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:44:53,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365887997] [2021-04-16 06:44:53,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:44:53,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:53,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:44:53,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:44:53,297 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:53,430 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2021-04-16 06:44:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:44:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-04-16 06:44:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:53,433 INFO L225 Difference]: With dead ends: 100 [2021-04-16 06:44:53,433 INFO L226 Difference]: Without dead ends: 73 [2021-04-16 06:44:53,433 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:44:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-04-16 06:44:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58. [2021-04-16 06:44:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.2) internal successors, (60), 51 states have internal predecessors, (60), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-04-16 06:44:53,448 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 33 [2021-04-16 06:44:53,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:53,449 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-04-16 06:44:53,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-04-16 06:44:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-04-16 06:44:53,449 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:53,449 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:53,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-16 06:44:53,449 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:53,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:53,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1306424002, now seen corresponding path program 3 times [2021-04-16 06:44:53,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:53,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693124200] [2021-04-16 06:44:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:53,454 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:53,456 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:53,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,586 INFO L142 QuantifierPusher]: treesize reduction 13, result has 72.3 percent of original size [2021-04-16 06:44:53,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:44:53,600 INFO L142 QuantifierPusher]: treesize reduction 13, result has 66.7 percent of original size [2021-04-16 06:44:53,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:44:53,604 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:44:53,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:44:53,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:53,614 INFO L142 QuantifierPusher]: treesize reduction 21, result has 36.4 percent of original size [2021-04-16 06:44:53,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:44:53,617 INFO L142 QuantifierPusher]: treesize reduction 42, result has 54.8 percent of original size [2021-04-16 06:44:53,618 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.3 percent of original size 44 [2021-04-16 06:44:53,633 INFO L142 QuantifierPusher]: treesize reduction 41, result has 62.0 percent of original size [2021-04-16 06:44:53,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:44:53,660 INFO L142 QuantifierPusher]: treesize reduction 41, result has 65.5 percent of original size [2021-04-16 06:44:53,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:44:53,693 INFO L142 QuantifierPusher]: treesize reduction 41, result has 65.0 percent of original size [2021-04-16 06:44:53,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:44:53,724 INFO L142 QuantifierPusher]: treesize reduction 16, result has 63.6 percent of original size [2021-04-16 06:44:53,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:44:53,774 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-04-16 06:44:53,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:44:53,789 INFO L142 QuantifierPusher]: treesize reduction 21, result has 68.7 percent of original size [2021-04-16 06:44:53,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:44:53,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:44:53,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:44:53,826 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-04-16 06:44:53,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:44:53,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:53,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:53,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:53,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:53,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:53,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693124200] [2021-04-16 06:44:53,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:53,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:44:53,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942894009] [2021-04-16 06:44:53,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:44:53,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:53,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:44:53,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:44:53,920 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:54,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:54,361 INFO L93 Difference]: Finished difference Result 111 states and 138 transitions. [2021-04-16 06:44:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-16 06:44:54,362 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-04-16 06:44:54,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:54,363 INFO L225 Difference]: With dead ends: 111 [2021-04-16 06:44:54,363 INFO L226 Difference]: Without dead ends: 109 [2021-04-16 06:44:54,364 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 497.5ms TimeCoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:44:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-04-16 06:44:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 65. [2021-04-16 06:44:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 58 states have internal predecessors, (70), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-04-16 06:44:54,376 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 33 [2021-04-16 06:44:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:54,376 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-04-16 06:44:54,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:54,376 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-04-16 06:44:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-04-16 06:44:54,378 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:54,378 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:54,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-16 06:44:54,378 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:54,378 INFO L82 PathProgramCache]: Analyzing trace with hash -350564349, now seen corresponding path program 1 times [2021-04-16 06:44:54,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:54,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54724914] [2021-04-16 06:44:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:54,383 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:54,384 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:54,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:44:54,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:54,462 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,465 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:44:54,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,471 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:44:54,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,478 INFO L142 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-04-16 06:44:54,479 INFO L147 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size 27 [2021-04-16 06:44:54,515 INFO L142 QuantifierPusher]: treesize reduction 22, result has 66.7 percent of original size [2021-04-16 06:44:54,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:44:54,531 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.4 percent of original size [2021-04-16 06:44:54,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:44:54,551 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-04-16 06:44:54,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:44:54,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:44:54,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:44:54,580 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-04-16 06:44:54,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:44:54,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:54,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:54,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:54,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:54,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:54,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54724914] [2021-04-16 06:44:54,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:54,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:44:54,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556536256] [2021-04-16 06:44:54,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:44:54,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:54,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:44:54,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:44:54,655 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 17 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:55,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:55,591 INFO L93 Difference]: Finished difference Result 138 states and 173 transitions. [2021-04-16 06:44:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-04-16 06:44:55,591 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-04-16 06:44:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:55,593 INFO L225 Difference]: With dead ends: 138 [2021-04-16 06:44:55,593 INFO L226 Difference]: Without dead ends: 136 [2021-04-16 06:44:55,594 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 717.8ms TimeCoverageRelationStatistics Valid=445, Invalid=1717, Unknown=0, NotChecked=0, Total=2162 [2021-04-16 06:44:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-04-16 06:44:55,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 70. [2021-04-16 06:44:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 63 states have internal predecessors, (78), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2021-04-16 06:44:55,608 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 36 [2021-04-16 06:44:55,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:55,609 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2021-04-16 06:44:55,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2021-04-16 06:44:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-04-16 06:44:55,610 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:55,610 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:55,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-16 06:44:55,610 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:55,611 INFO L82 PathProgramCache]: Analyzing trace with hash 350500229, now seen corresponding path program 2 times [2021-04-16 06:44:55,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:55,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852841846] [2021-04-16 06:44:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:55,616 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:55,617 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:55,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:55,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:55,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:55,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:55,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:55,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:55,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852841846] [2021-04-16 06:44:55,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:55,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:44:55,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841986538] [2021-04-16 06:44:55,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:44:55,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:55,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:44:55,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:44:55,683 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:55,819 INFO L93 Difference]: Finished difference Result 142 states and 179 transitions. [2021-04-16 06:44:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:44:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-04-16 06:44:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:55,821 INFO L225 Difference]: With dead ends: 142 [2021-04-16 06:44:55,821 INFO L226 Difference]: Without dead ends: 107 [2021-04-16 06:44:55,822 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:44:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-04-16 06:44:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2021-04-16 06:44:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 70 states have internal predecessors, (84), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2021-04-16 06:44:55,833 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 36 [2021-04-16 06:44:55,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:55,833 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2021-04-16 06:44:55,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2021-04-16 06:44:55,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-04-16 06:44:55,834 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:55,834 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:55,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-16 06:44:55,834 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:55,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1169352267, now seen corresponding path program 3 times [2021-04-16 06:44:55,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:55,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092772104] [2021-04-16 06:44:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:55,840 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:55,841 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:55,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,929 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-04-16 06:44:55,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:44:55,934 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:44:55,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:44:55,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:55,967 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,971 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-04-16 06:44:55,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:44:55,982 INFO L142 QuantifierPusher]: treesize reduction 18, result has 51.4 percent of original size [2021-04-16 06:44:55,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:44:55,999 INFO L142 QuantifierPusher]: treesize reduction 20, result has 61.5 percent of original size [2021-04-16 06:44:55,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:44:56,018 INFO L142 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-04-16 06:44:56,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:44:56,055 INFO L142 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-04-16 06:44:56,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-04-16 06:44:56,087 INFO L142 QuantifierPusher]: treesize reduction 30, result has 72.7 percent of original size [2021-04-16 06:44:56,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:44:56,115 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-04-16 06:44:56,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:44:56,129 INFO L142 QuantifierPusher]: treesize reduction 25, result has 58.3 percent of original size [2021-04-16 06:44:56,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:44:56,147 INFO L142 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-04-16 06:44:56,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:44:56,162 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:44:56,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:44:56,176 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:44:56,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:44:56,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:56,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:56,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:56,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:56,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:56,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092772104] [2021-04-16 06:44:56,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:56,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:44:56,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970933851] [2021-04-16 06:44:56,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:44:56,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:56,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:44:56,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:44:56,279 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand has 21 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:56,759 INFO L93 Difference]: Finished difference Result 115 states and 136 transitions. [2021-04-16 06:44:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-16 06:44:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-04-16 06:44:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:56,761 INFO L225 Difference]: With dead ends: 115 [2021-04-16 06:44:56,761 INFO L226 Difference]: Without dead ends: 113 [2021-04-16 06:44:56,762 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 487.5ms TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:44:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-04-16 06:44:56,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 71. [2021-04-16 06:44:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2021-04-16 06:44:56,772 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 36 [2021-04-16 06:44:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:56,772 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2021-04-16 06:44:56,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2021-04-16 06:44:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-04-16 06:44:56,772 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:56,772 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:56,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-16 06:44:56,773 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:56,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1855259691, now seen corresponding path program 4 times [2021-04-16 06:44:56,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:56,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965732938] [2021-04-16 06:44:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:56,779 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:56,780 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:56,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:56,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:56,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:56,829 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:44:56,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:44:56,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:44:56,847 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-04-16 06:44:56,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:44:56,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:44:56,863 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-04-16 06:44:56,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:44:56,880 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-04-16 06:44:56,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:56,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:56,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965732938] [2021-04-16 06:44:56,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:56,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:44:56,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696392465] [2021-04-16 06:44:56,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:44:56,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:56,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:44:56,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:44:56,908 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:57,059 INFO L93 Difference]: Finished difference Result 185 states and 229 transitions. [2021-04-16 06:44:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:44:57,060 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-04-16 06:44:57,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:57,061 INFO L225 Difference]: With dead ends: 185 [2021-04-16 06:44:57,062 INFO L226 Difference]: Without dead ends: 146 [2021-04-16 06:44:57,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:44:57,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-04-16 06:44:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 105. [2021-04-16 06:44:57,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 98 states have internal predecessors, (119), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2021-04-16 06:44:57,076 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 39 [2021-04-16 06:44:57,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:57,076 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2021-04-16 06:44:57,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2021-04-16 06:44:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-04-16 06:44:57,077 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:57,077 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:57,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-04-16 06:44:57,077 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:57,077 INFO L82 PathProgramCache]: Analyzing trace with hash -930331484, now seen corresponding path program 4 times [2021-04-16 06:44:57,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:57,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316518006] [2021-04-16 06:44:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:57,081 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:57,083 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:57,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,147 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:44:57,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:44:57,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:57,157 INFO L142 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-04-16 06:44:57,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:44:57,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:44:57,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,171 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-04-16 06:44:57,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:44:57,180 INFO L142 QuantifierPusher]: treesize reduction 15, result has 50.0 percent of original size [2021-04-16 06:44:57,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:44:57,192 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-04-16 06:44:57,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:44:57,210 INFO L142 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-04-16 06:44:57,211 INFO L147 QuantifierPusher]: treesize reduction 8, result has 82.2 percent of original size 37 [2021-04-16 06:44:57,230 INFO L142 QuantifierPusher]: treesize reduction 29, result has 68.1 percent of original size [2021-04-16 06:44:57,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:44:57,259 INFO L142 QuantifierPusher]: treesize reduction 29, result has 67.8 percent of original size [2021-04-16 06:44:57,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:44:57,288 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:44:57,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:44:57,301 INFO L142 QuantifierPusher]: treesize reduction 41, result has 48.1 percent of original size [2021-04-16 06:44:57,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:44:57,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:57,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:57,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:57,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:57,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:57,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316518006] [2021-04-16 06:44:57,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:57,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:44:57,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871749145] [2021-04-16 06:44:57,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:44:57,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:57,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:44:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:44:57,378 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:58,166 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2021-04-16 06:44:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-04-16 06:44:58,167 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-04-16 06:44:58,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:58,167 INFO L225 Difference]: With dead ends: 230 [2021-04-16 06:44:58,167 INFO L226 Difference]: Without dead ends: 172 [2021-04-16 06:44:58,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 633.0ms TimeCoverageRelationStatistics Valid=297, Invalid=1343, Unknown=0, NotChecked=0, Total=1640 [2021-04-16 06:44:58,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-04-16 06:44:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 93. [2021-04-16 06:44:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.188235294117647) internal successors, (101), 86 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2021-04-16 06:44:58,181 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 39 [2021-04-16 06:44:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:58,182 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2021-04-16 06:44:58,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2021-04-16 06:44:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-04-16 06:44:58,182 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:58,182 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:58,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-04-16 06:44:58,183 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:58,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:58,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1624035100, now seen corresponding path program 2 times [2021-04-16 06:44:58,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:58,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949705496] [2021-04-16 06:44:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:58,186 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:58,187 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:58,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:58,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:58,242 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:44:58,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:58,247 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:44:58,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:58,251 INFO L142 QuantifierPusher]: treesize reduction 15, result has 55.9 percent of original size [2021-04-16 06:44:58,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:44:58,260 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-04-16 06:44:58,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:44:58,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:44:58,277 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-04-16 06:44:58,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:44:58,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:44:58,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:58,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:58,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:58,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:58,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-04-16 06:44:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:58,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:58,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949705496] [2021-04-16 06:44:58,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:58,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:44:58,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126565104] [2021-04-16 06:44:58,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:44:58,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:58,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:44:58,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:44:58,351 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:58,703 INFO L93 Difference]: Finished difference Result 130 states and 150 transitions. [2021-04-16 06:44:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:44:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2021-04-16 06:44:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:58,704 INFO L225 Difference]: With dead ends: 130 [2021-04-16 06:44:58,704 INFO L226 Difference]: Without dead ends: 128 [2021-04-16 06:44:58,706 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 251.0ms TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:44:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-04-16 06:44:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 110. [2021-04-16 06:44:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 101 states have internal predecessors, (116), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-04-16 06:44:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2021-04-16 06:44:58,721 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 41 [2021-04-16 06:44:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:58,721 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2021-04-16 06:44:58,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2021-04-16 06:44:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-04-16 06:44:58,722 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:58,722 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:58,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-04-16 06:44:58,722 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:58,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:58,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1831868819, now seen corresponding path program 5 times [2021-04-16 06:44:58,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:58,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165658562] [2021-04-16 06:44:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:58,727 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:58,728 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:58,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,796 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-04-16 06:44:58,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:44:58,809 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:44:58,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:44:58,812 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:44:58,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:44:58,822 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:44:58,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:44:58,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:44:58,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:44:58,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:58,837 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,840 INFO L142 QuantifierPusher]: treesize reduction 36, result has 59.1 percent of original size [2021-04-16 06:44:58,840 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.5 percent of original size 45 [2021-04-16 06:44:58,855 INFO L142 QuantifierPusher]: treesize reduction 35, result has 64.6 percent of original size [2021-04-16 06:44:58,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:44:58,882 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.9 percent of original size [2021-04-16 06:44:58,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:44:58,918 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.3 percent of original size [2021-04-16 06:44:58,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:44:58,950 INFO L142 QuantifierPusher]: treesize reduction 13, result has 77.6 percent of original size [2021-04-16 06:44:58,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:44:58,970 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-04-16 06:44:58,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:44:58,987 INFO L142 QuantifierPusher]: treesize reduction 14, result has 79.1 percent of original size [2021-04-16 06:44:58,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:44:59,009 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:44:59,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:44:59,028 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:44:59,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:44:59,048 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:44:59,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:44:59,062 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:44:59,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:44:59,074 INFO L142 QuantifierPusher]: treesize reduction 19, result has 65.5 percent of original size [2021-04-16 06:44:59,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:44:59,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:59,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:59,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:59,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:59,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:59,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:59,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165658562] [2021-04-16 06:44:59,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:59,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:44:59,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086978522] [2021-04-16 06:44:59,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:44:59,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:59,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:44:59,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:44:59,172 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:59,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:59,831 INFO L93 Difference]: Finished difference Result 207 states and 242 transitions. [2021-04-16 06:44:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-04-16 06:44:59,832 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-04-16 06:44:59,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:59,833 INFO L225 Difference]: With dead ends: 207 [2021-04-16 06:44:59,833 INFO L226 Difference]: Without dead ends: 168 [2021-04-16 06:44:59,834 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 643.5ms TimeCoverageRelationStatistics Valid=251, Invalid=1231, Unknown=0, NotChecked=0, Total=1482 [2021-04-16 06:44:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-04-16 06:44:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 140. [2021-04-16 06:44:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 127 states have (on average 1.1574803149606299) internal successors, (147), 130 states have internal predecessors, (147), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2021-04-16 06:44:59,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 160 transitions. [2021-04-16 06:44:59,853 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 160 transitions. Word has length 41 [2021-04-16 06:44:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:59,853 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 160 transitions. [2021-04-16 06:44:59,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 160 transitions. [2021-04-16 06:44:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-04-16 06:44:59,854 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:59,854 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:59,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-04-16 06:44:59,854 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:59,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2084807843, now seen corresponding path program 1 times [2021-04-16 06:44:59,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:59,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51772803] [2021-04-16 06:44:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:59,858 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:59,858 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:59,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:59,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:59,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:59,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:59,910 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:44:59,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:59,913 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:44:59,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:59,917 INFO L142 QuantifierPusher]: treesize reduction 15, result has 59.5 percent of original size [2021-04-16 06:44:59,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:44:59,925 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-04-16 06:44:59,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:44:59,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:44:59,941 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size [2021-04-16 06:44:59,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:44:59,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:44:59,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:59,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:59,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:59,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:00,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:00,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-04-16 06:45:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:00,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:00,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51772803] [2021-04-16 06:45:00,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:00,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:45:00,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650906867] [2021-04-16 06:45:00,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:45:00,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:00,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:45:00,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:45:00,012 INFO L87 Difference]: Start difference. First operand 140 states and 160 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:00,461 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2021-04-16 06:45:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:45:00,462 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-04-16 06:45:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:00,462 INFO L225 Difference]: With dead ends: 175 [2021-04-16 06:45:00,462 INFO L226 Difference]: Without dead ends: 173 [2021-04-16 06:45:00,463 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 253.6ms TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:45:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-04-16 06:45:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 140. [2021-04-16 06:45:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 127 states have (on average 1.1574803149606299) internal successors, (147), 130 states have internal predecessors, (147), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2021-04-16 06:45:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 160 transitions. [2021-04-16 06:45:00,482 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 160 transitions. Word has length 44 [2021-04-16 06:45:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:00,482 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 160 transitions. [2021-04-16 06:45:00,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 160 transitions. [2021-04-16 06:45:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-04-16 06:45:00,483 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:00,483 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:00,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-04-16 06:45:00,483 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:00,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1979815022, now seen corresponding path program 2 times [2021-04-16 06:45:00,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:00,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815416766] [2021-04-16 06:45:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:00,487 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:00,487 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:00,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:00,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,554 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:45:00,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:00,566 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-04-16 06:45:00,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:00,569 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:45:00,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:00,581 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:00,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:00,585 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:45:00,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:00,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:00,596 INFO L142 QuantifierPusher]: treesize reduction 21, result has 36.4 percent of original size [2021-04-16 06:45:00,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:00,599 INFO L142 QuantifierPusher]: treesize reduction 49, result has 61.7 percent of original size [2021-04-16 06:45:00,600 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.1 percent of original size 72 [2021-04-16 06:45:00,624 INFO L142 QuantifierPusher]: treesize reduction 48, result has 66.4 percent of original size [2021-04-16 06:45:00,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-04-16 06:45:00,661 INFO L142 QuantifierPusher]: treesize reduction 48, result has 68.8 percent of original size [2021-04-16 06:45:00,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-04-16 06:45:00,705 INFO L142 QuantifierPusher]: treesize reduction 48, result has 68.4 percent of original size [2021-04-16 06:45:00,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-04-16 06:45:00,758 INFO L142 QuantifierPusher]: treesize reduction 20, result has 71.0 percent of original size [2021-04-16 06:45:00,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:00,777 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-04-16 06:45:00,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:00,815 INFO L142 QuantifierPusher]: treesize reduction 25, result has 71.6 percent of original size [2021-04-16 06:45:00,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:45:00,852 INFO L142 QuantifierPusher]: treesize reduction 20, result has 58.3 percent of original size [2021-04-16 06:45:00,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:00,861 INFO L142 QuantifierPusher]: treesize reduction 20, result has 58.3 percent of original size [2021-04-16 06:45:00,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:00,878 INFO L142 QuantifierPusher]: treesize reduction 22, result has 77.1 percent of original size [2021-04-16 06:45:00,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:45:00,906 INFO L142 QuantifierPusher]: treesize reduction 21, result has 68.7 percent of original size [2021-04-16 06:45:00,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:45:00,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:00,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:00,945 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-04-16 06:45:00,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:00,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:00,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:00,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:00,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:01,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:01,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:01,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815416766] [2021-04-16 06:45:01,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:01,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:45:01,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734033297] [2021-04-16 06:45:01,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:45:01,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:01,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:45:01,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:45:01,028 INFO L87 Difference]: Start difference. First operand 140 states and 160 transitions. Second operand has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:01,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:01,787 INFO L93 Difference]: Finished difference Result 209 states and 243 transitions. [2021-04-16 06:45:01,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-04-16 06:45:01,788 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-04-16 06:45:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:01,789 INFO L225 Difference]: With dead ends: 209 [2021-04-16 06:45:01,789 INFO L226 Difference]: Without dead ends: 207 [2021-04-16 06:45:01,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 767.9ms TimeCoverageRelationStatistics Valid=248, Invalid=1234, Unknown=0, NotChecked=0, Total=1482 [2021-04-16 06:45:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-04-16 06:45:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 149. [2021-04-16 06:45:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 136 states have (on average 1.1691176470588236) internal successors, (159), 139 states have internal predecessors, (159), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2021-04-16 06:45:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 172 transitions. [2021-04-16 06:45:01,814 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 172 transitions. Word has length 44 [2021-04-16 06:45:01,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:01,814 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 172 transitions. [2021-04-16 06:45:01,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 172 transitions. [2021-04-16 06:45:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-04-16 06:45:01,815 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:01,815 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:01,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-04-16 06:45:01,815 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:01,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:01,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1128449496, now seen corresponding path program 3 times [2021-04-16 06:45:01,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:01,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190543761] [2021-04-16 06:45:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:01,819 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:01,820 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:01,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:01,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:01,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:01,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:01,875 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,879 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-04-16 06:45:01,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:01,888 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-04-16 06:45:01,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:01,899 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.6 percent of original size [2021-04-16 06:45:01,900 INFO L147 QuantifierPusher]: treesize reduction 7, result has 84.4 percent of original size 38 [2021-04-16 06:45:01,921 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.3 percent of original size [2021-04-16 06:45:01,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:45:01,952 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.7 percent of original size [2021-04-16 06:45:01,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:45:01,980 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.2 percent of original size [2021-04-16 06:45:01,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:45:02,009 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:02,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:02,021 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:02,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:02,035 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.0 percent of original size [2021-04-16 06:45:02,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:45:02,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:02,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:02,067 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:45:02,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:02,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:02,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:02,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:02,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:02,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:02,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:02,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190543761] [2021-04-16 06:45:02,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:02,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:45:02,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503093528] [2021-04-16 06:45:02,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:45:02,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:02,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:45:02,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:45:02,164 INFO L87 Difference]: Start difference. First operand 149 states and 172 transitions. Second operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:02,877 INFO L93 Difference]: Finished difference Result 201 states and 233 transitions. [2021-04-16 06:45:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-16 06:45:02,878 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-04-16 06:45:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:02,880 INFO L225 Difference]: With dead ends: 201 [2021-04-16 06:45:02,880 INFO L226 Difference]: Without dead ends: 199 [2021-04-16 06:45:02,880 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 635.9ms TimeCoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2021-04-16 06:45:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-04-16 06:45:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 152. [2021-04-16 06:45:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 139 states have (on average 1.1726618705035972) internal successors, (163), 142 states have internal predecessors, (163), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2021-04-16 06:45:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 176 transitions. [2021-04-16 06:45:02,907 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 176 transitions. Word has length 44 [2021-04-16 06:45:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:02,907 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 176 transitions. [2021-04-16 06:45:02,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 176 transitions. [2021-04-16 06:45:02,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-04-16 06:45:02,908 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:02,908 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:02,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-04-16 06:45:02,908 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:02,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:02,908 INFO L82 PathProgramCache]: Analyzing trace with hash -172816864, now seen corresponding path program 5 times [2021-04-16 06:45:02,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:02,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126911011] [2021-04-16 06:45:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:02,912 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:02,913 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:02,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:02,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,981 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:45:02,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:02,993 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-04-16 06:45:02,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:02,996 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.7 percent of original size [2021-04-16 06:45:02,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:45:03,010 INFO L142 QuantifierPusher]: treesize reduction 20, result has 61.5 percent of original size [2021-04-16 06:45:03,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:45:03,016 INFO L142 QuantifierPusher]: treesize reduction 38, result has 58.7 percent of original size [2021-04-16 06:45:03,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-04-16 06:45:03,037 INFO L142 QuantifierPusher]: treesize reduction 38, result has 54.8 percent of original size [2021-04-16 06:45:03,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:45:03,043 INFO L142 QuantifierPusher]: treesize reduction 28, result has 41.7 percent of original size [2021-04-16 06:45:03,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:03,051 INFO L142 QuantifierPusher]: treesize reduction 30, result has 43.4 percent of original size [2021-04-16 06:45:03,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:45:03,055 INFO L142 QuantifierPusher]: treesize reduction 44, result has 51.1 percent of original size [2021-04-16 06:45:03,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:45:03,062 INFO L142 QuantifierPusher]: treesize reduction 44, result has 52.2 percent of original size [2021-04-16 06:45:03,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:45:03,086 INFO L142 QuantifierPusher]: treesize reduction 44, result has 57.7 percent of original size [2021-04-16 06:45:03,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:45:03,113 INFO L142 QuantifierPusher]: treesize reduction 73, result has 48.6 percent of original size [2021-04-16 06:45:03,114 INFO L147 QuantifierPusher]: treesize reduction 8, result has 88.4 percent of original size 61 [2021-04-16 06:45:03,140 INFO L142 QuantifierPusher]: treesize reduction 72, result has 53.8 percent of original size [2021-04-16 06:45:03,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:45:03,184 INFO L142 QuantifierPusher]: treesize reduction 72, result has 52.9 percent of original size [2021-04-16 06:45:03,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:45:03,220 INFO L142 QuantifierPusher]: treesize reduction 39, result has 36.1 percent of original size [2021-04-16 06:45:03,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:45:03,233 INFO L142 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size [2021-04-16 06:45:03,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:45:03,262 INFO L142 QuantifierPusher]: treesize reduction 23, result has 64.1 percent of original size [2021-04-16 06:45:03,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:03,287 INFO L142 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-04-16 06:45:03,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:03,288 INFO L142 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-04-16 06:45:03,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:03,304 INFO L142 QuantifierPusher]: treesize reduction 29, result has 72.1 percent of original size [2021-04-16 06:45:03,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:45:03,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:03,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:03,363 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:45:03,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:03,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:03,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:03,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:03,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:03,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:03,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:03,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:03,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:03,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:03,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:03,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126911011] [2021-04-16 06:45:03,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:03,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:45:03,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553230869] [2021-04-16 06:45:03,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:45:03,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:03,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:45:03,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:45:03,463 INFO L87 Difference]: Start difference. First operand 152 states and 176 transitions. Second operand has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:04,396 INFO L93 Difference]: Finished difference Result 216 states and 252 transitions. [2021-04-16 06:45:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:45:04,397 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-04-16 06:45:04,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:04,399 INFO L225 Difference]: With dead ends: 216 [2021-04-16 06:45:04,399 INFO L226 Difference]: Without dead ends: 214 [2021-04-16 06:45:04,400 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 749.0ms TimeCoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2021-04-16 06:45:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-04-16 06:45:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 133. [2021-04-16 06:45:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 124 states have internal predecessors, (146), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 06:45:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2021-04-16 06:45:04,424 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 44 [2021-04-16 06:45:04,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:04,424 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2021-04-16 06:45:04,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:04,424 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2021-04-16 06:45:04,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-16 06:45:04,425 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:04,425 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:04,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-04-16 06:45:04,425 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:04,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1585209602, now seen corresponding path program 1 times [2021-04-16 06:45:04,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:04,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448256156] [2021-04-16 06:45:04,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:04,430 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:04,431 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:04,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:04,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:04,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:04,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:04,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,498 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:45:04,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:04,684 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 13 [2021-04-16 06:45:04,686 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-04-16 06:45:04,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:04,695 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.2 percent of original size [2021-04-16 06:45:04,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:45:04,709 INFO L142 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-04-16 06:45:04,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:45:04,714 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:45:04,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:45:04,722 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-04-16 06:45:04,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:04,727 INFO L142 QuantifierPusher]: treesize reduction 36, result has 71.0 percent of original size [2021-04-16 06:45:04,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:45:04,757 INFO L142 QuantifierPusher]: treesize reduction 37, result has 72.4 percent of original size [2021-04-16 06:45:04,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:45:04,783 INFO L142 QuantifierPusher]: treesize reduction 37, result has 70.2 percent of original size [2021-04-16 06:45:04,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:45:04,813 INFO L142 QuantifierPusher]: treesize reduction 37, result has 69.9 percent of original size [2021-04-16 06:45:04,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 06:45:04,840 INFO L142 QuantifierPusher]: treesize reduction 23, result has 64.6 percent of original size [2021-04-16 06:45:04,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:45:04,885 INFO L142 QuantifierPusher]: treesize reduction 37, result has 56.0 percent of original size [2021-04-16 06:45:04,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:45:04,903 INFO L142 QuantifierPusher]: treesize reduction 37, result has 55.4 percent of original size [2021-04-16 06:45:04,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:45:04,922 INFO L142 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-04-16 06:45:04,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:45:04,948 INFO L142 QuantifierPusher]: treesize reduction 51, result has 56.4 percent of original size [2021-04-16 06:45:04,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:45:04,949 INFO L142 QuantifierPusher]: treesize reduction 49, result has 57.4 percent of original size [2021-04-16 06:45:04,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:45:04,954 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-04-16 06:45:04,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:45:04,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-04-16 06:45:05,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:45:05,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:45:05,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:05,037 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:05,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:05,063 INFO L142 QuantifierPusher]: treesize reduction 24, result has 54.7 percent of original size [2021-04-16 06:45:05,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:45:05,084 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:45:05,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:45:05,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:05,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:05,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:05,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:05,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:05,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:05,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:05,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:05,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:05,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:05,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:05,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-04-16 06:45:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:05,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:05,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:05,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448256156] [2021-04-16 06:45:05,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:05,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:45:05,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130309947] [2021-04-16 06:45:05,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:45:05,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:05,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:45:05,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:45:05,186 INFO L87 Difference]: Start difference. First operand 133 states and 155 transitions. Second operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:06,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:06,489 INFO L93 Difference]: Finished difference Result 248 states and 289 transitions. [2021-04-16 06:45:06,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-04-16 06:45:06,489 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2021-04-16 06:45:06,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:06,490 INFO L225 Difference]: With dead ends: 248 [2021-04-16 06:45:06,490 INFO L226 Difference]: Without dead ends: 246 [2021-04-16 06:45:06,491 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 1319.1ms TimeCoverageRelationStatistics Valid=367, Invalid=2285, Unknown=0, NotChecked=0, Total=2652 [2021-04-16 06:45:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-04-16 06:45:06,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 193. [2021-04-16 06:45:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 177 states have (on average 1.1751412429378532) internal successors, (208), 181 states have internal predecessors, (208), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-04-16 06:45:06,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 225 transitions. [2021-04-16 06:45:06,524 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 225 transitions. Word has length 47 [2021-04-16 06:45:06,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:06,524 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 225 transitions. [2021-04-16 06:45:06,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 225 transitions. [2021-04-16 06:45:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-04-16 06:45:06,525 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:06,525 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:06,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-04-16 06:45:06,525 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:06,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:06,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1571697014, now seen corresponding path program 3 times [2021-04-16 06:45:06,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:06,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836388094] [2021-04-16 06:45:06,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:06,528 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:06,529 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:06,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:06,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:06,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,558 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:45:06,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:45:06,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:45:06,576 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-04-16 06:45:06,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:45:06,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:45:06,592 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-04-16 06:45:06,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:06,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:06,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:06,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-04-16 06:45:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:06,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-04-16 06:45:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:06,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:06,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836388094] [2021-04-16 06:45:06,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:06,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:45:06,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276048544] [2021-04-16 06:45:06,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:45:06,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:06,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:45:06,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:45:06,642 INFO L87 Difference]: Start difference. First operand 193 states and 225 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:45:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:06,881 INFO L93 Difference]: Finished difference Result 249 states and 292 transitions. [2021-04-16 06:45:06,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:45:06,882 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2021-04-16 06:45:06,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:06,883 INFO L225 Difference]: With dead ends: 249 [2021-04-16 06:45:06,883 INFO L226 Difference]: Without dead ends: 190 [2021-04-16 06:45:06,883 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:45:06,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-04-16 06:45:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 166. [2021-04-16 06:45:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 152 states have (on average 1.1513157894736843) internal successors, (175), 156 states have internal predecessors, (175), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2021-04-16 06:45:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 191 transitions. [2021-04-16 06:45:06,912 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 191 transitions. Word has length 49 [2021-04-16 06:45:06,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:06,913 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 191 transitions. [2021-04-16 06:45:06,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:45:06,913 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 191 transitions. [2021-04-16 06:45:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-16 06:45:06,913 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:06,913 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:06,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-04-16 06:45:06,913 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1212783309, now seen corresponding path program 4 times [2021-04-16 06:45:06,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:06,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658957416] [2021-04-16 06:45:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:06,917 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:06,918 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:06,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:06,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:06,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:06,965 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,968 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:06,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,974 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:06,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,980 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:06,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,987 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:06,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,994 INFO L142 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-04-16 06:45:06,994 INFO L147 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size 27 [2021-04-16 06:45:07,010 INFO L142 QuantifierPusher]: treesize reduction 22, result has 66.7 percent of original size [2021-04-16 06:45:07,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:07,033 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.1 percent of original size [2021-04-16 06:45:07,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-04-16 06:45:07,052 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-04-16 06:45:07,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:45:07,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:07,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:07,085 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:45:07,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:07,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:07,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:07,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:07,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:07,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:07,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:07,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:07,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:07,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:07,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:07,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658957416] [2021-04-16 06:45:07,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:07,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:45:07,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375036055] [2021-04-16 06:45:07,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:45:07,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:07,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:45:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:45:07,154 INFO L87 Difference]: Start difference. First operand 166 states and 191 transitions. Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:08,114 INFO L93 Difference]: Finished difference Result 263 states and 314 transitions. [2021-04-16 06:45:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-04-16 06:45:08,115 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-04-16 06:45:08,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:08,116 INFO L225 Difference]: With dead ends: 263 [2021-04-16 06:45:08,116 INFO L226 Difference]: Without dead ends: 261 [2021-04-16 06:45:08,116 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 752.6ms TimeCoverageRelationStatistics Valid=599, Invalid=2157, Unknown=0, NotChecked=0, Total=2756 [2021-04-16 06:45:08,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-04-16 06:45:08,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 185. [2021-04-16 06:45:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 171 states have (on average 1.1754385964912282) internal successors, (201), 175 states have internal predecessors, (201), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2021-04-16 06:45:08,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2021-04-16 06:45:08,149 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 47 [2021-04-16 06:45:08,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:08,149 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2021-04-16 06:45:08,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:08,149 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2021-04-16 06:45:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-16 06:45:08,150 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:08,150 INFO L519 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:08,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-04-16 06:45:08,150 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:08,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:08,150 INFO L82 PathProgramCache]: Analyzing trace with hash -511718731, now seen corresponding path program 6 times [2021-04-16 06:45:08,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:08,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365200264] [2021-04-16 06:45:08,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:08,154 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:08,155 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:08,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:08,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:08,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:08,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:08,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:08,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:08,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:08,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:08,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:08,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:08,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365200264] [2021-04-16 06:45:08,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:08,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:45:08,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416948377] [2021-04-16 06:45:08,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:45:08,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:08,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:45:08,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:45:08,214 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:08,448 INFO L93 Difference]: Finished difference Result 253 states and 305 transitions. [2021-04-16 06:45:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:45:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-04-16 06:45:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:08,449 INFO L225 Difference]: With dead ends: 253 [2021-04-16 06:45:08,449 INFO L226 Difference]: Without dead ends: 230 [2021-04-16 06:45:08,450 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:45:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-04-16 06:45:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 190. [2021-04-16 06:45:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 176 states have (on average 1.1761363636363635) internal successors, (207), 180 states have internal predecessors, (207), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2021-04-16 06:45:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 223 transitions. [2021-04-16 06:45:08,483 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 223 transitions. Word has length 47 [2021-04-16 06:45:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:08,483 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 223 transitions. [2021-04-16 06:45:08,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:08,483 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 223 transitions. [2021-04-16 06:45:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-16 06:45:08,484 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:08,484 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:08,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-04-16 06:45:08,484 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:08,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1895537965, now seen corresponding path program 5 times [2021-04-16 06:45:08,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:08,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075822992] [2021-04-16 06:45:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:08,488 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:08,488 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:08,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:08,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:08,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:08,548 INFO L142 QuantifierPusher]: treesize reduction 13, result has 75.9 percent of original size [2021-04-16 06:45:08,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:08,560 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.7 percent of original size [2021-04-16 06:45:08,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:08,563 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:45:08,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:08,574 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:45:08,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:08,578 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:45:08,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:08,588 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:45:08,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:45:08,597 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:45:08,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:08,601 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:45:08,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:08,605 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:45:08,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:08,608 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:45:08,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:08,611 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:45:08,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:08,614 INFO L142 QuantifierPusher]: treesize reduction 32, result has 46.7 percent of original size [2021-04-16 06:45:08,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:08,626 INFO L142 QuantifierPusher]: treesize reduction 32, result has 50.8 percent of original size [2021-04-16 06:45:08,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:08,640 INFO L142 QuantifierPusher]: treesize reduction 40, result has 58.8 percent of original size [2021-04-16 06:45:08,640 INFO L147 QuantifierPusher]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-04-16 06:45:08,663 INFO L142 QuantifierPusher]: treesize reduction 39, result has 63.6 percent of original size [2021-04-16 06:45:08,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:45:08,693 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.9 percent of original size [2021-04-16 06:45:08,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:45:08,733 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.1 percent of original size [2021-04-16 06:45:08,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:45:08,767 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:45:08,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:08,791 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:45:08,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:08,811 INFO L142 QuantifierPusher]: treesize reduction 15, result has 83.0 percent of original size [2021-04-16 06:45:08,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:45:08,845 INFO L142 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-04-16 06:45:08,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:45:08,862 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:08,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:08,877 INFO L142 QuantifierPusher]: treesize reduction 19, result has 65.5 percent of original size [2021-04-16 06:45:08,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:08,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:08,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:08,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:08,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:08,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:08,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:08,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:08,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075822992] [2021-04-16 06:45:08,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:08,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:45:08,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587948809] [2021-04-16 06:45:08,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:45:08,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:08,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:45:08,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:45:08,962 INFO L87 Difference]: Start difference. First operand 190 states and 223 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:09,811 INFO L93 Difference]: Finished difference Result 239 states and 280 transitions. [2021-04-16 06:45:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-04-16 06:45:09,812 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-04-16 06:45:09,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:09,813 INFO L225 Difference]: With dead ends: 239 [2021-04-16 06:45:09,813 INFO L226 Difference]: Without dead ends: 237 [2021-04-16 06:45:09,813 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 7 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 767.7ms TimeCoverageRelationStatistics Valid=275, Invalid=1447, Unknown=0, NotChecked=0, Total=1722 [2021-04-16 06:45:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-04-16 06:45:09,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 196. [2021-04-16 06:45:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 182 states have (on average 1.1813186813186813) internal successors, (215), 186 states have internal predecessors, (215), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2021-04-16 06:45:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 231 transitions. [2021-04-16 06:45:09,848 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 231 transitions. Word has length 47 [2021-04-16 06:45:09,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:09,848 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 231 transitions. [2021-04-16 06:45:09,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 231 transitions. [2021-04-16 06:45:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-16 06:45:09,849 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:09,849 INFO L519 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:09,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-04-16 06:45:09,849 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:09,849 INFO L82 PathProgramCache]: Analyzing trace with hash -879512715, now seen corresponding path program 7 times [2021-04-16 06:45:09,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:09,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126560302] [2021-04-16 06:45:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:09,853 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:09,854 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:09,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:09,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:09,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:09,908 INFO L142 QuantifierPusher]: treesize reduction 46, result has 28.1 percent of original size [2021-04-16 06:45:09,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:45:09,920 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:09,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:09,928 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-04-16 06:45:09,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:45:09,931 INFO L142 QuantifierPusher]: treesize reduction 16, result has 63.6 percent of original size [2021-04-16 06:45:09,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:09,941 INFO L142 QuantifierPusher]: treesize reduction 10, result has 79.6 percent of original size [2021-04-16 06:45:09,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:45:09,962 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.1 percent of original size [2021-04-16 06:45:09,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:45:09,986 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.7 percent of original size [2021-04-16 06:45:09,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:45:10,012 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.9 percent of original size [2021-04-16 06:45:10,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:45:10,041 INFO L142 QuantifierPusher]: treesize reduction 44, result has 59.3 percent of original size [2021-04-16 06:45:10,042 INFO L147 QuantifierPusher]: treesize reduction 8, result has 87.5 percent of original size 56 [2021-04-16 06:45:10,077 INFO L142 QuantifierPusher]: treesize reduction 42, result has 65.3 percent of original size [2021-04-16 06:45:10,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:45:10,116 INFO L142 QuantifierPusher]: treesize reduction 42, result has 64.7 percent of original size [2021-04-16 06:45:10,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:45:10,161 INFO L142 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-04-16 06:45:10,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:10,177 INFO L142 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-04-16 06:45:10,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:10,209 INFO L142 QuantifierPusher]: treesize reduction 37, result has 67.0 percent of original size [2021-04-16 06:45:10,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:45:10,246 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:10,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:10,263 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:45:10,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:10,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:10,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:10,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:10,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:10,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:10,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126560302] [2021-04-16 06:45:10,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:10,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:45:10,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385954955] [2021-04-16 06:45:10,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:45:10,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:10,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:45:10,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:45:10,358 INFO L87 Difference]: Start difference. First operand 196 states and 231 transitions. Second operand has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:11,631 INFO L93 Difference]: Finished difference Result 246 states and 288 transitions. [2021-04-16 06:45:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-04-16 06:45:11,631 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-04-16 06:45:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:11,632 INFO L225 Difference]: With dead ends: 246 [2021-04-16 06:45:11,632 INFO L226 Difference]: Without dead ends: 244 [2021-04-16 06:45:11,633 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 963.8ms TimeCoverageRelationStatistics Valid=267, Invalid=1803, Unknown=0, NotChecked=0, Total=2070 [2021-04-16 06:45:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-04-16 06:45:11,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 200. [2021-04-16 06:45:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 185 states have (on average 1.1783783783783783) internal successors, (218), 189 states have internal predecessors, (218), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2021-04-16 06:45:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 234 transitions. [2021-04-16 06:45:11,669 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 234 transitions. Word has length 47 [2021-04-16 06:45:11,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:11,669 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 234 transitions. [2021-04-16 06:45:11,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:11,669 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 234 transitions. [2021-04-16 06:45:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-16 06:45:11,670 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:11,670 INFO L519 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:11,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-04-16 06:45:11,670 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:11,670 INFO L82 PathProgramCache]: Analyzing trace with hash -2050746395, now seen corresponding path program 8 times [2021-04-16 06:45:11,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:11,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241143773] [2021-04-16 06:45:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:11,674 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:11,674 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:11,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:11,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:11,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:11,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:11,732 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-04-16 06:45:11,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:11,737 INFO L142 QuantifierPusher]: treesize reduction 20, result has 44.4 percent of original size [2021-04-16 06:45:11,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:45:11,748 INFO L142 QuantifierPusher]: treesize reduction 56, result has 31.7 percent of original size [2021-04-16 06:45:11,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:11,762 INFO L142 QuantifierPusher]: treesize reduction 28, result has 41.7 percent of original size [2021-04-16 06:45:11,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:11,770 INFO L142 QuantifierPusher]: treesize reduction 30, result has 43.4 percent of original size [2021-04-16 06:45:11,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:45:11,774 INFO L142 QuantifierPusher]: treesize reduction 44, result has 46.3 percent of original size [2021-04-16 06:45:11,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:11,792 INFO L142 QuantifierPusher]: treesize reduction 46, result has 45.2 percent of original size [2021-04-16 06:45:11,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:11,812 INFO L142 QuantifierPusher]: treesize reduction 46, result has 52.1 percent of original size [2021-04-16 06:45:11,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:45:11,835 INFO L142 QuantifierPusher]: treesize reduction 55, result has 55.6 percent of original size [2021-04-16 06:45:11,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:45:11,875 INFO L142 QuantifierPusher]: treesize reduction 55, result has 60.1 percent of original size [2021-04-16 06:45:11,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-04-16 06:45:11,910 INFO L142 QuantifierPusher]: treesize reduction 55, result has 59.3 percent of original size [2021-04-16 06:45:11,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:45:11,950 INFO L142 QuantifierPusher]: treesize reduction 39, result has 36.1 percent of original size [2021-04-16 06:45:11,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:45:11,965 INFO L142 QuantifierPusher]: treesize reduction 53, result has 43.6 percent of original size [2021-04-16 06:45:11,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:11,988 INFO L142 QuantifierPusher]: treesize reduction 40, result has 58.8 percent of original size [2021-04-16 06:45:11,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:45:12,015 INFO L142 QuantifierPusher]: treesize reduction 40, result has 50.6 percent of original size [2021-04-16 06:45:12,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:12,016 INFO L142 QuantifierPusher]: treesize reduction 41, result has 50.0 percent of original size [2021-04-16 06:45:12,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:12,040 INFO L142 QuantifierPusher]: treesize reduction 49, result has 67.1 percent of original size [2021-04-16 06:45:12,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:45:12,080 INFO L142 QuantifierPusher]: treesize reduction 14, result has 70.8 percent of original size [2021-04-16 06:45:12,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:12,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:12,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:12,116 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:45:12,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:12,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:12,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:12,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:12,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:12,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:12,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:12,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:12,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:12,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:12,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:12,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:12,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241143773] [2021-04-16 06:45:12,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:12,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-04-16 06:45:12,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140893670] [2021-04-16 06:45:12,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-04-16 06:45:12,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:12,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-04-16 06:45:12,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:45:12,215 INFO L87 Difference]: Start difference. First operand 200 states and 234 transitions. Second operand has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:13,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:13,365 INFO L93 Difference]: Finished difference Result 255 states and 297 transitions. [2021-04-16 06:45:13,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-04-16 06:45:13,375 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-04-16 06:45:13,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:13,376 INFO L225 Difference]: With dead ends: 255 [2021-04-16 06:45:13,376 INFO L226 Difference]: Without dead ends: 253 [2021-04-16 06:45:13,376 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 783.3ms TimeCoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2021-04-16 06:45:13,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-04-16 06:45:13,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 203. [2021-04-16 06:45:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 188 states have (on average 1.1808510638297873) internal successors, (222), 192 states have internal predecessors, (222), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2021-04-16 06:45:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 238 transitions. [2021-04-16 06:45:13,420 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 238 transitions. Word has length 47 [2021-04-16 06:45:13,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:13,420 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 238 transitions. [2021-04-16 06:45:13,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:13,421 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 238 transitions. [2021-04-16 06:45:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-04-16 06:45:13,421 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:13,421 INFO L519 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:13,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-04-16 06:45:13,421 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash -42029369, now seen corresponding path program 2 times [2021-04-16 06:45:13,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:13,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111263999] [2021-04-16 06:45:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:13,425 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:13,426 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:13,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:13,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:13,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:13,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:13,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:13,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:13,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:13,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:13,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:13,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:13,494 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:13,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:13,497 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.7 percent of original size [2021-04-16 06:45:13,497 INFO L147 QuantifierPusher]: treesize reduction 7, result has 84.8 percent of original size 39 [2021-04-16 06:45:13,511 INFO L142 QuantifierPusher]: treesize reduction 27, result has 68.6 percent of original size [2021-04-16 06:45:13,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:45:13,543 INFO L142 QuantifierPusher]: treesize reduction 28, result has 72.0 percent of original size [2021-04-16 06:45:13,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:45:13,584 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.9 percent of original size [2021-04-16 06:45:13,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:45:13,609 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.5 percent of original size [2021-04-16 06:45:13,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:45:13,622 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.0 percent of original size [2021-04-16 06:45:13,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:45:13,632 INFO L142 QuantifierPusher]: treesize reduction 21, result has 71.6 percent of original size [2021-04-16 06:45:13,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:45:13,653 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.0 percent of original size [2021-04-16 06:45:13,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:45:13,675 INFO L142 QuantifierPusher]: treesize reduction 43, result has 61.3 percent of original size [2021-04-16 06:45:13,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:45:13,701 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.1 percent of original size [2021-04-16 06:45:13,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-04-16 06:45:13,723 INFO L142 QuantifierPusher]: treesize reduction 22, result has 73.2 percent of original size [2021-04-16 06:45:13,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:45:13,763 INFO L142 QuantifierPusher]: treesize reduction 22, result has 72.2 percent of original size [2021-04-16 06:45:13,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:45:13,803 INFO L142 QuantifierPusher]: treesize reduction 29, result has 71.3 percent of original size [2021-04-16 06:45:13,804 INFO L147 QuantifierPusher]: treesize reduction 8, result has 88.9 percent of original size 64 [2021-04-16 06:45:13,863 INFO L142 QuantifierPusher]: treesize reduction 27, result has 76.3 percent of original size [2021-04-16 06:45:13,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:45:13,902 INFO L142 QuantifierPusher]: treesize reduction 27, result has 75.9 percent of original size [2021-04-16 06:45:13,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-04-16 06:45:13,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:45:13,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:13,966 INFO L142 QuantifierPusher]: treesize reduction 12, result has 66.7 percent of original size [2021-04-16 06:45:13,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:45:13,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:45:13,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:14,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:14,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:14,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:14,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:14,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:14,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-04-16 06:45:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:14,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:14,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111263999] [2021-04-16 06:45:14,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:14,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-04-16 06:45:14,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806452870] [2021-04-16 06:45:14,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-04-16 06:45:14,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:14,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-04-16 06:45:14,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:45:14,107 INFO L87 Difference]: Start difference. First operand 203 states and 238 transitions. Second operand has 26 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:15,407 INFO L93 Difference]: Finished difference Result 213 states and 247 transitions. [2021-04-16 06:45:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-04-16 06:45:15,408 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2021-04-16 06:45:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:15,408 INFO L225 Difference]: With dead ends: 213 [2021-04-16 06:45:15,409 INFO L226 Difference]: Without dead ends: 173 [2021-04-16 06:45:15,409 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1381.2ms TimeCoverageRelationStatistics Valid=370, Invalid=2282, Unknown=0, NotChecked=0, Total=2652 [2021-04-16 06:45:15,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-04-16 06:45:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2021-04-16 06:45:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 157 states have (on average 1.2038216560509554) internal successors, (189), 160 states have internal predecessors, (189), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2021-04-16 06:45:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2021-04-16 06:45:15,440 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 50 [2021-04-16 06:45:15,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:15,441 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2021-04-16 06:45:15,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2021-04-16 06:45:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-04-16 06:45:15,445 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:15,445 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:15,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-04-16 06:45:15,445 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1165803103, now seen corresponding path program 6 times [2021-04-16 06:45:15,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:15,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493320282] [2021-04-16 06:45:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:15,451 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:15,453 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:15,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:15,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:15,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:15,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:15,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:15,496 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:45:15,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:45:15,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:45:15,515 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-04-16 06:45:15,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:45:15,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:45:15,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:45:15,544 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-04-16 06:45:15,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:15,563 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-04-16 06:45:15,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:15,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:15,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:15,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:15,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493320282] [2021-04-16 06:45:15,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:15,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:45:15,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234800089] [2021-04-16 06:45:15,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:45:15,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:15,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:45:15,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:45:15,589 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:15,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:15,894 INFO L93 Difference]: Finished difference Result 383 states and 464 transitions. [2021-04-16 06:45:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:45:15,898 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-04-16 06:45:15,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:15,899 INFO L225 Difference]: With dead ends: 383 [2021-04-16 06:45:15,899 INFO L226 Difference]: Without dead ends: 318 [2021-04-16 06:45:15,900 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 177.1ms TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:45:15,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-04-16 06:45:15,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 254. [2021-04-16 06:45:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 242 states have (on average 1.1942148760330578) internal successors, (289), 245 states have internal predecessors, (289), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2021-04-16 06:45:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 302 transitions. [2021-04-16 06:45:15,949 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 302 transitions. Word has length 50 [2021-04-16 06:45:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:15,949 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 302 transitions. [2021-04-16 06:45:15,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 302 transitions. [2021-04-16 06:45:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-04-16 06:45:15,949 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:15,950 INFO L519 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:15,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-04-16 06:45:15,950 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:15,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:15,950 INFO L82 PathProgramCache]: Analyzing trace with hash 904028532, now seen corresponding path program 9 times [2021-04-16 06:45:15,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:15,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477722599] [2021-04-16 06:45:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:15,953 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:15,954 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:15,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:15,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:15,991 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:45:15,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:15,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:15,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:15,999 INFO L142 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-04-16 06:45:16,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:16,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:45:16,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:16,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:45:16,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:16,013 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:45:16,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:16,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:45:16,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:16,026 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-04-16 06:45:16,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:16,036 INFO L142 QuantifierPusher]: treesize reduction 15, result has 50.0 percent of original size [2021-04-16 06:45:16,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:16,048 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.9 percent of original size [2021-04-16 06:45:16,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:45:16,067 INFO L142 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-04-16 06:45:16,067 INFO L147 QuantifierPusher]: treesize reduction 8, result has 82.2 percent of original size 37 [2021-04-16 06:45:16,087 INFO L142 QuantifierPusher]: treesize reduction 29, result has 68.1 percent of original size [2021-04-16 06:45:16,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:45:16,121 INFO L142 QuantifierPusher]: treesize reduction 29, result has 67.8 percent of original size [2021-04-16 06:45:16,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:45:16,153 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:16,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:16,168 INFO L142 QuantifierPusher]: treesize reduction 51, result has 42.7 percent of original size [2021-04-16 06:45:16,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:16,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:16,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:16,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:16,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:16,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:16,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:16,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:16,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:16,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:16,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:16,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:16,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477722599] [2021-04-16 06:45:16,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:16,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:45:16,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139941973] [2021-04-16 06:45:16,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:45:16,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:16,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:45:16,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:45:16,251 INFO L87 Difference]: Start difference. First operand 254 states and 302 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:17,281 INFO L93 Difference]: Finished difference Result 387 states and 463 transitions. [2021-04-16 06:45:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-04-16 06:45:17,281 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-04-16 06:45:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:17,304 INFO L225 Difference]: With dead ends: 387 [2021-04-16 06:45:17,305 INFO L226 Difference]: Without dead ends: 338 [2021-04-16 06:45:17,306 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 791.5ms TimeCoverageRelationStatistics Valid=489, Invalid=2061, Unknown=0, NotChecked=0, Total=2550 [2021-04-16 06:45:17,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-04-16 06:45:17,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 255. [2021-04-16 06:45:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 243 states have (on average 1.1851851851851851) internal successors, (288), 246 states have internal predecessors, (288), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2021-04-16 06:45:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 301 transitions. [2021-04-16 06:45:17,384 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 301 transitions. Word has length 50 [2021-04-16 06:45:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:17,384 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 301 transitions. [2021-04-16 06:45:17,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 301 transitions. [2021-04-16 06:45:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-04-16 06:45:17,384 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:17,384 INFO L519 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:17,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-04-16 06:45:17,385 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:17,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:17,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1297158544, now seen corresponding path program 10 times [2021-04-16 06:45:17,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:17,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197620737] [2021-04-16 06:45:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:17,388 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:17,389 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:17,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:17,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:17,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:17,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:17,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:17,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:17,443 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-04-16 06:45:17,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:45:17,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:17,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:17,452 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-04-16 06:45:17,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:45:17,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:17,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:17,463 INFO L142 QuantifierPusher]: treesize reduction 48, result has 33.3 percent of original size [2021-04-16 06:45:17,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:45:17,475 INFO L142 QuantifierPusher]: treesize reduction 46, result has 28.1 percent of original size [2021-04-16 06:45:17,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:45:17,480 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:17,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:17,488 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-04-16 06:45:17,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:45:17,491 INFO L142 QuantifierPusher]: treesize reduction 24, result has 72.7 percent of original size [2021-04-16 06:45:17,491 INFO L147 QuantifierPusher]: treesize reduction 7, result has 89.1 percent of original size 57 [2021-04-16 06:45:17,512 INFO L142 QuantifierPusher]: treesize reduction 31, result has 73.0 percent of original size [2021-04-16 06:45:17,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:45:17,543 INFO L142 QuantifierPusher]: treesize reduction 31, result has 72.3 percent of original size [2021-04-16 06:45:17,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:45:17,572 INFO L142 QuantifierPusher]: treesize reduction 35, result has 57.8 percent of original size [2021-04-16 06:45:17,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:45:17,579 INFO L142 QuantifierPusher]: treesize reduction 37, result has 48.6 percent of original size [2021-04-16 06:45:17,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:17,584 INFO L142 QuantifierPusher]: treesize reduction 30, result has 60.5 percent of original size [2021-04-16 06:45:17,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:45:17,606 INFO L142 QuantifierPusher]: treesize reduction 35, result has 64.6 percent of original size [2021-04-16 06:45:17,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:45:17,639 INFO L142 QuantifierPusher]: treesize reduction 37, result has 73.6 percent of original size [2021-04-16 06:45:17,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-04-16 06:45:17,697 INFO L142 QuantifierPusher]: treesize reduction 37, result has 75.8 percent of original size [2021-04-16 06:45:17,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-04-16 06:45:17,746 INFO L142 QuantifierPusher]: treesize reduction 57, result has 61.2 percent of original size [2021-04-16 06:45:17,748 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.1 percent of original size 82 [2021-04-16 06:45:17,809 INFO L142 QuantifierPusher]: treesize reduction 43, result has 67.2 percent of original size [2021-04-16 06:45:17,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:45:17,845 INFO L142 QuantifierPusher]: treesize reduction 43, result has 66.9 percent of original size [2021-04-16 06:45:17,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:45:17,885 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.9 percent of original size [2021-04-16 06:45:17,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:17,914 INFO L142 QuantifierPusher]: treesize reduction 24, result has 57.9 percent of original size [2021-04-16 06:45:17,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:17,942 INFO L142 QuantifierPusher]: treesize reduction 58, result has 58.3 percent of original size [2021-04-16 06:45:17,942 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.4 percent of original size 74 [2021-04-16 06:45:17,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:45:17,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:17,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:17,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:18,012 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:45:18,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:18,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:18,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:18,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:18,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:18,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:18,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:18,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:18,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:18,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:18,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:18,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:18,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197620737] [2021-04-16 06:45:18,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:18,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-04-16 06:45:18,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004191358] [2021-04-16 06:45:18,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-04-16 06:45:18,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:18,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-04-16 06:45:18,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:45:18,101 INFO L87 Difference]: Start difference. First operand 255 states and 301 transitions. Second operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:20,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:20,143 INFO L93 Difference]: Finished difference Result 353 states and 417 transitions. [2021-04-16 06:45:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-04-16 06:45:20,148 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-04-16 06:45:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:20,149 INFO L225 Difference]: With dead ends: 353 [2021-04-16 06:45:20,149 INFO L226 Difference]: Without dead ends: 351 [2021-04-16 06:45:20,150 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 1927.8ms TimeCoverageRelationStatistics Valid=455, Invalid=3327, Unknown=0, NotChecked=0, Total=3782 [2021-04-16 06:45:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-04-16 06:45:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 231. [2021-04-16 06:45:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 220 states have (on average 1.1818181818181819) internal successors, (260), 222 states have internal predecessors, (260), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-04-16 06:45:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 271 transitions. [2021-04-16 06:45:20,199 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 271 transitions. Word has length 50 [2021-04-16 06:45:20,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:20,199 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 271 transitions. [2021-04-16 06:45:20,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 25 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:20,199 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 271 transitions. [2021-04-16 06:45:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-16 06:45:20,199 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:20,200 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:20,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-04-16 06:45:20,200 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:20,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:20,200 INFO L82 PathProgramCache]: Analyzing trace with hash -787548180, now seen corresponding path program 2 times [2021-04-16 06:45:20,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:20,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257400069] [2021-04-16 06:45:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:20,203 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:20,204 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:20,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:20,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:20,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:20,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:20,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:20,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:20,247 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:45:20,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:20,254 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-04-16 06:45:20,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:20,263 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-04-16 06:45:20,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:20,263 INFO L142 QuantifierPusher]: treesize reduction 20, result has 20.0 percent of original size [2021-04-16 06:45:20,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:20,266 INFO L142 QuantifierPusher]: treesize reduction 21, result has 19.2 percent of original size [2021-04-16 06:45:20,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:20,271 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:45:20,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:20,276 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:45:20,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:20,281 INFO L142 QuantifierPusher]: treesize reduction 15, result has 55.9 percent of original size [2021-04-16 06:45:20,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:20,292 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-04-16 06:45:20,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:20,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:20,330 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-04-16 06:45:20,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:20,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:20,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:20,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:20,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:20,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:20,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:20,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-04-16 06:45:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:20,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:20,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:20,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257400069] [2021-04-16 06:45:20,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:20,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:45:20,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87734505] [2021-04-16 06:45:20,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:45:20,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:20,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:45:20,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:45:20,456 INFO L87 Difference]: Start difference. First operand 231 states and 271 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:21,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:21,266 INFO L93 Difference]: Finished difference Result 363 states and 428 transitions. [2021-04-16 06:45:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-04-16 06:45:21,266 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2021-04-16 06:45:21,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:21,268 INFO L225 Difference]: With dead ends: 363 [2021-04-16 06:45:21,268 INFO L226 Difference]: Without dead ends: 361 [2021-04-16 06:45:21,269 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 522.3ms TimeCoverageRelationStatistics Valid=205, Invalid=1517, Unknown=0, NotChecked=0, Total=1722 [2021-04-16 06:45:21,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-04-16 06:45:21,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 272. [2021-04-16 06:45:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 257 states have (on average 1.1750972762645915) internal successors, (302), 261 states have internal predecessors, (302), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-04-16 06:45:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 319 transitions. [2021-04-16 06:45:21,341 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 319 transitions. Word has length 52 [2021-04-16 06:45:21,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:21,341 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 319 transitions. [2021-04-16 06:45:21,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 319 transitions. [2021-04-16 06:45:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-16 06:45:21,342 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:21,342 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:21,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-04-16 06:45:21,342 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:21,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1609585614, now seen corresponding path program 3 times [2021-04-16 06:45:21,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:21,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343949955] [2021-04-16 06:45:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:21,351 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:21,352 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:21,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:21,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:21,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:21,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:21,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:21,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:21,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:21,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:21,405 INFO L142 QuantifierPusher]: treesize reduction 22, result has 69.4 percent of original size [2021-04-16 06:45:21,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:45:21,418 INFO L142 QuantifierPusher]: treesize reduction 16, result has 15.8 percent of original size [2021-04-16 06:45:21,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:21,423 INFO L142 QuantifierPusher]: treesize reduction 17, result has 29.2 percent of original size [2021-04-16 06:45:21,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:21,426 INFO L142 QuantifierPusher]: treesize reduction 25, result has 47.9 percent of original size [2021-04-16 06:45:21,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:45:21,430 INFO L142 QuantifierPusher]: treesize reduction 21, result has 63.8 percent of original size [2021-04-16 06:45:21,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:45:21,446 INFO L142 QuantifierPusher]: treesize reduction 21, result has 71.6 percent of original size [2021-04-16 06:45:21,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:45:21,485 INFO L142 QuantifierPusher]: treesize reduction 20, result has 71.0 percent of original size [2021-04-16 06:45:21,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:21,509 INFO L142 QuantifierPusher]: treesize reduction 20, result has 63.0 percent of original size [2021-04-16 06:45:21,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:21,529 INFO L142 QuantifierPusher]: treesize reduction 21, result has 62.5 percent of original size [2021-04-16 06:45:21,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:21,549 INFO L142 QuantifierPusher]: treesize reduction 31, result has 68.7 percent of original size [2021-04-16 06:45:21,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:45:21,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:45:21,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:21,584 INFO L142 QuantifierPusher]: treesize reduction 24, result has 56.4 percent of original size [2021-04-16 06:45:21,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:21,603 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:45:21,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:21,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:21,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:21,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:21,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:21,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:21,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:21,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:21,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:21,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:21,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:21,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:21,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-04-16 06:45:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:21,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:21,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:21,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343949955] [2021-04-16 06:45:21,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:21,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-04-16 06:45:21,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242130106] [2021-04-16 06:45:21,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-16 06:45:21,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:21,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-16 06:45:21,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:45:21,681 INFO L87 Difference]: Start difference. First operand 272 states and 319 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:22,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:22,305 INFO L93 Difference]: Finished difference Result 310 states and 362 transitions. [2021-04-16 06:45:22,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:45:22,306 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2021-04-16 06:45:22,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:22,307 INFO L225 Difference]: With dead ends: 310 [2021-04-16 06:45:22,307 INFO L226 Difference]: Without dead ends: 308 [2021-04-16 06:45:22,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 432.0ms TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:45:22,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-04-16 06:45:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 266. [2021-04-16 06:45:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 251 states have (on average 1.1752988047808766) internal successors, (295), 255 states have internal predecessors, (295), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-04-16 06:45:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 312 transitions. [2021-04-16 06:45:22,381 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 312 transitions. Word has length 52 [2021-04-16 06:45:22,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:22,381 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 312 transitions. [2021-04-16 06:45:22,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 312 transitions. [2021-04-16 06:45:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-16 06:45:22,382 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:22,382 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:22,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-04-16 06:45:22,382 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:22,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:22,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1574158879, now seen corresponding path program 7 times [2021-04-16 06:45:22,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:22,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552350024] [2021-04-16 06:45:22,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:22,387 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:22,388 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:22,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:22,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:22,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:22,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:22,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:22,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:22,448 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-04-16 06:45:22,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:22,459 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:45:22,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:22,463 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:45:22,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:22,474 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:22,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:22,478 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:45:22,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:22,491 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:22,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:22,496 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:45:22,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:22,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:22,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:22,508 INFO L142 QuantifierPusher]: treesize reduction 30, result has 28.6 percent of original size [2021-04-16 06:45:22,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:22,512 INFO L142 QuantifierPusher]: treesize reduction 49, result has 52.4 percent of original size [2021-04-16 06:45:22,512 INFO L147 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size 47 [2021-04-16 06:45:22,544 INFO L142 QuantifierPusher]: treesize reduction 48, result has 59.3 percent of original size [2021-04-16 06:45:22,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:45:22,574 INFO L142 QuantifierPusher]: treesize reduction 48, result has 62.8 percent of original size [2021-04-16 06:45:22,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:45:22,615 INFO L142 QuantifierPusher]: treesize reduction 48, result has 62.2 percent of original size [2021-04-16 06:45:22,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:45:22,652 INFO L142 QuantifierPusher]: treesize reduction 16, result has 63.6 percent of original size [2021-04-16 06:45:22,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:22,670 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:22,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:22,683 INFO L142 QuantifierPusher]: treesize reduction 23, result has 68.1 percent of original size [2021-04-16 06:45:22,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:22,708 INFO L142 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size [2021-04-16 06:45:22,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:22,709 INFO L142 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size [2021-04-16 06:45:22,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:22,728 INFO L142 QuantifierPusher]: treesize reduction 28, result has 63.6 percent of original size [2021-04-16 06:45:22,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:22,754 INFO L142 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size [2021-04-16 06:45:22,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:22,755 INFO L142 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size [2021-04-16 06:45:22,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:22,773 INFO L142 QuantifierPusher]: treesize reduction 26, result has 74.3 percent of original size [2021-04-16 06:45:22,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:45:22,806 INFO L142 QuantifierPusher]: treesize reduction 22, result has 67.6 percent of original size [2021-04-16 06:45:22,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:45:22,830 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-04-16 06:45:22,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:22,845 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-04-16 06:45:22,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:22,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:22,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:22,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:22,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:22,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:22,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:22,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:22,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:22,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:22,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:22,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552350024] [2021-04-16 06:45:22,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:22,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-04-16 06:45:22,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222339429] [2021-04-16 06:45:22,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-04-16 06:45:22,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:22,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-04-16 06:45:22,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:45:22,951 INFO L87 Difference]: Start difference. First operand 266 states and 312 transitions. Second operand has 26 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:23,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:23,871 INFO L93 Difference]: Finished difference Result 329 states and 387 transitions. [2021-04-16 06:45:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-16 06:45:23,872 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-04-16 06:45:23,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:23,873 INFO L225 Difference]: With dead ends: 329 [2021-04-16 06:45:23,873 INFO L226 Difference]: Without dead ends: 327 [2021-04-16 06:45:23,873 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 776.7ms TimeCoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2021-04-16 06:45:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-04-16 06:45:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 295. [2021-04-16 06:45:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 277 states have (on average 1.1768953068592058) internal successors, (326), 283 states have internal predecessors, (326), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 10 states have call successors, (10) [2021-04-16 06:45:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 347 transitions. [2021-04-16 06:45:23,947 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 347 transitions. Word has length 52 [2021-04-16 06:45:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:23,947 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 347 transitions. [2021-04-16 06:45:23,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 347 transitions. [2021-04-16 06:45:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-16 06:45:23,948 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:23,948 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:23,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-04-16 06:45:23,948 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:23,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:23,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1534105639, now seen corresponding path program 8 times [2021-04-16 06:45:23,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:23,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692581288] [2021-04-16 06:45:23,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:23,952 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:23,953 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:24,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:24,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:24,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:24,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:24,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:24,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:24,015 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-04-16 06:45:24,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:24,027 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-04-16 06:45:24,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:24,031 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:45:24,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:24,041 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:45:24,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:24,046 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:45:24,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:24,057 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:45:24,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:24,062 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:45:24,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:24,073 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:45:24,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:45:24,082 INFO L142 QuantifierPusher]: treesize reduction 32, result has 44.8 percent of original size [2021-04-16 06:45:24,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:24,087 INFO L142 QuantifierPusher]: treesize reduction 65, result has 55.8 percent of original size [2021-04-16 06:45:24,087 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.5 percent of original size 75 [2021-04-16 06:45:24,116 INFO L142 QuantifierPusher]: treesize reduction 64, result has 60.5 percent of original size [2021-04-16 06:45:24,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:45:24,156 INFO L142 QuantifierPusher]: treesize reduction 64, result has 63.0 percent of original size [2021-04-16 06:45:24,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-04-16 06:45:24,205 INFO L142 QuantifierPusher]: treesize reduction 64, result has 62.6 percent of original size [2021-04-16 06:45:24,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-04-16 06:45:24,247 INFO L142 QuantifierPusher]: treesize reduction 20, result has 79.6 percent of original size [2021-04-16 06:45:24,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:45:24,272 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:45:24,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:24,290 INFO L142 QuantifierPusher]: treesize reduction 19, result has 77.6 percent of original size [2021-04-16 06:45:24,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:45:24,316 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:45:24,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:24,317 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:45:24,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:24,337 INFO L142 QuantifierPusher]: treesize reduction 17, result has 82.5 percent of original size [2021-04-16 06:45:24,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:45:24,373 INFO L142 QuantifierPusher]: treesize reduction 17, result has 75.4 percent of original size [2021-04-16 06:45:24,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:45:24,396 INFO L142 QuantifierPusher]: treesize reduction 57, result has 38.7 percent of original size [2021-04-16 06:45:24,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:24,397 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:45:24,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:24,422 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:45:24,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:24,439 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:24,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:24,453 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-04-16 06:45:24,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:24,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:24,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:24,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:24,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:24,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:24,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:24,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:24,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:24,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:24,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:24,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692581288] [2021-04-16 06:45:24,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:24,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-04-16 06:45:24,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810349147] [2021-04-16 06:45:24,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-04-16 06:45:24,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:24,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-04-16 06:45:24,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:45:24,547 INFO L87 Difference]: Start difference. First operand 295 states and 347 transitions. Second operand has 26 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:25,409 INFO L93 Difference]: Finished difference Result 368 states and 433 transitions. [2021-04-16 06:45:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-16 06:45:25,409 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-04-16 06:45:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:25,410 INFO L225 Difference]: With dead ends: 368 [2021-04-16 06:45:25,410 INFO L226 Difference]: Without dead ends: 366 [2021-04-16 06:45:25,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 798.1ms TimeCoverageRelationStatistics Valid=294, Invalid=1188, Unknown=0, NotChecked=0, Total=1482 [2021-04-16 06:45:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-04-16 06:45:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 308. [2021-04-16 06:45:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 288 states have (on average 1.1736111111111112) internal successors, (338), 295 states have internal predecessors, (338), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (11), 4 states have call predecessors, (11), 11 states have call successors, (11) [2021-04-16 06:45:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 361 transitions. [2021-04-16 06:45:25,493 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 361 transitions. Word has length 52 [2021-04-16 06:45:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:25,493 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 361 transitions. [2021-04-16 06:45:25,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 361 transitions. [2021-04-16 06:45:25,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-16 06:45:25,494 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:25,494 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:25,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-04-16 06:45:25,494 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:25,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:25,494 INFO L82 PathProgramCache]: Analyzing trace with hash 125734965, now seen corresponding path program 11 times [2021-04-16 06:45:25,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:25,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85569414] [2021-04-16 06:45:25,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:25,498 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:25,498 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:25,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:25,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:25,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:25,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:25,573 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:45:25,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:25,578 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:45:25,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:25,584 INFO L142 QuantifierPusher]: treesize reduction 62, result has 22.5 percent of original size [2021-04-16 06:45:25,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:45:25,595 INFO L142 QuantifierPusher]: treesize reduction 25, result has 51.0 percent of original size [2021-04-16 06:45:25,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:25,608 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:25,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:25,616 INFO L142 QuantifierPusher]: treesize reduction 32, result has 46.7 percent of original size [2021-04-16 06:45:25,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:25,619 INFO L142 QuantifierPusher]: treesize reduction 36, result has 50.7 percent of original size [2021-04-16 06:45:25,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:45:25,633 INFO L142 QuantifierPusher]: treesize reduction 36, result has 54.4 percent of original size [2021-04-16 06:45:25,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:45:25,640 INFO L142 QuantifierPusher]: treesize reduction 36, result has 60.9 percent of original size [2021-04-16 06:45:25,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:45:25,664 INFO L142 QuantifierPusher]: treesize reduction 59, result has 57.6 percent of original size [2021-04-16 06:45:25,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:45:25,706 INFO L142 QuantifierPusher]: treesize reduction 59, result has 61.4 percent of original size [2021-04-16 06:45:25,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:45:25,743 INFO L142 QuantifierPusher]: treesize reduction 59, result has 60.7 percent of original size [2021-04-16 06:45:25,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-04-16 06:45:25,775 INFO L142 QuantifierPusher]: treesize reduction 44, result has 38.0 percent of original size [2021-04-16 06:45:25,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:25,795 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size [2021-04-16 06:45:25,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:45:25,819 INFO L142 QuantifierPusher]: treesize reduction 33, result has 60.2 percent of original size [2021-04-16 06:45:25,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:45:25,845 INFO L142 QuantifierPusher]: treesize reduction 33, result has 50.7 percent of original size [2021-04-16 06:45:25,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:25,856 INFO L142 QuantifierPusher]: treesize reduction 33, result has 50.7 percent of original size [2021-04-16 06:45:25,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:25,880 INFO L142 QuantifierPusher]: treesize reduction 46, result has 65.7 percent of original size [2021-04-16 06:45:25,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:45:25,923 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.8 percent of original size [2021-04-16 06:45:25,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:25,946 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:45:25,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:45:25,970 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:45:25,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:25,989 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:25,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:26,007 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:45:26,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:26,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:26,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:26,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:26,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:26,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:26,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:26,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:26,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:26,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:26,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:26,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:26,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85569414] [2021-04-16 06:45:26,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:26,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-04-16 06:45:26,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047747331] [2021-04-16 06:45:26,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-04-16 06:45:26,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:26,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-04-16 06:45:26,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:45:26,145 INFO L87 Difference]: Start difference. First operand 308 states and 361 transitions. Second operand has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:27,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:27,524 INFO L93 Difference]: Finished difference Result 444 states and 527 transitions. [2021-04-16 06:45:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-04-16 06:45:27,525 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-04-16 06:45:27,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:27,526 INFO L225 Difference]: With dead ends: 444 [2021-04-16 06:45:27,526 INFO L226 Difference]: Without dead ends: 442 [2021-04-16 06:45:27,527 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 966.8ms TimeCoverageRelationStatistics Valid=259, Invalid=1633, Unknown=0, NotChecked=0, Total=1892 [2021-04-16 06:45:27,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-04-16 06:45:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 326. [2021-04-16 06:45:27,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 306 states have (on average 1.1797385620915033) internal successors, (361), 313 states have internal predecessors, (361), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (11), 4 states have call predecessors, (11), 11 states have call successors, (11) [2021-04-16 06:45:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 384 transitions. [2021-04-16 06:45:27,606 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 384 transitions. Word has length 52 [2021-04-16 06:45:27,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:27,606 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 384 transitions. [2021-04-16 06:45:27,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 384 transitions. [2021-04-16 06:45:27,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-04-16 06:45:27,607 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:27,607 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:27,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-04-16 06:45:27,607 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:27,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:27,607 INFO L82 PathProgramCache]: Analyzing trace with hash 650625165, now seen corresponding path program 4 times [2021-04-16 06:45:27,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:27,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385468429] [2021-04-16 06:45:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:27,611 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:27,612 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:27,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:27,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:27,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:27,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:27,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:27,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:27,676 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:45:27,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:27,679 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-04-16 06:45:27,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:27,683 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:45:27,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:27,689 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:45:27,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:27,694 INFO L142 QuantifierPusher]: treesize reduction 15, result has 59.5 percent of original size [2021-04-16 06:45:27,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:45:27,706 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-04-16 06:45:27,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:27,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:27,728 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size [2021-04-16 06:45:27,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:27,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:45:27,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:27,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:27,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:27,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:27,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:27,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-04-16 06:45:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:27,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:27,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:27,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385468429] [2021-04-16 06:45:27,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:27,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:45:27,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917080678] [2021-04-16 06:45:27,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:45:27,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:27,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:45:27,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:45:27,836 INFO L87 Difference]: Start difference. First operand 326 states and 384 transitions. Second operand has 17 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:28,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:28,854 INFO L93 Difference]: Finished difference Result 418 states and 494 transitions. [2021-04-16 06:45:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-04-16 06:45:28,854 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2021-04-16 06:45:28,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:28,855 INFO L225 Difference]: With dead ends: 418 [2021-04-16 06:45:28,855 INFO L226 Difference]: Without dead ends: 416 [2021-04-16 06:45:28,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 502.6ms TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-04-16 06:45:28,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-04-16 06:45:28,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 326. [2021-04-16 06:45:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 306 states have (on average 1.1797385620915033) internal successors, (361), 313 states have internal predecessors, (361), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (11), 4 states have call predecessors, (11), 11 states have call successors, (11) [2021-04-16 06:45:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 384 transitions. [2021-04-16 06:45:28,935 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 384 transitions. Word has length 55 [2021-04-16 06:45:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:28,936 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 384 transitions. [2021-04-16 06:45:28,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 384 transitions. [2021-04-16 06:45:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-04-16 06:45:28,937 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:28,937 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:28,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-04-16 06:45:28,937 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1147005369, now seen corresponding path program 4 times [2021-04-16 06:45:28,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:28,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29946830] [2021-04-16 06:45:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:28,942 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:28,942 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:28,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:28,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:28,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:28,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:28,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:28,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:28,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:28,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:28,990 INFO L142 QuantifierPusher]: treesize reduction 17, result has 75.0 percent of original size [2021-04-16 06:45:28,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:45:29,005 INFO L142 QuantifierPusher]: treesize reduction 15, result has 16.7 percent of original size [2021-04-16 06:45:29,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:29,010 INFO L142 QuantifierPusher]: treesize reduction 16, result has 30.4 percent of original size [2021-04-16 06:45:29,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:29,012 INFO L142 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-04-16 06:45:29,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:45:29,016 INFO L142 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-04-16 06:45:29,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:45:29,020 INFO L142 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-04-16 06:45:29,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:45:29,030 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-04-16 06:45:29,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:45:29,049 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.9 percent of original size [2021-04-16 06:45:29,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:29,065 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:29,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:29,075 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-04-16 06:45:29,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:29,088 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:45:29,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:29,105 INFO L142 QuantifierPusher]: treesize reduction 27, result has 70.3 percent of original size [2021-04-16 06:45:29,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:45:29,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:29,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:29,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:29,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:29,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:29,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:29,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:29,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:29,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:29,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:29,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-04-16 06:45:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:29,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:29,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:29,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-04-16 06:45:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:29,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:29,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:29,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29946830] [2021-04-16 06:45:29,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:29,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:45:29,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419763639] [2021-04-16 06:45:29,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:45:29,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:29,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:45:29,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:45:29,198 INFO L87 Difference]: Start difference. First operand 326 states and 384 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:45:29,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:29,813 INFO L93 Difference]: Finished difference Result 399 states and 472 transitions. [2021-04-16 06:45:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:45:29,813 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2021-04-16 06:45:29,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:29,814 INFO L225 Difference]: With dead ends: 399 [2021-04-16 06:45:29,814 INFO L226 Difference]: Without dead ends: 397 [2021-04-16 06:45:29,815 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 385.1ms TimeCoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:45:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-04-16 06:45:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 373. [2021-04-16 06:45:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 344 states have (on average 1.1686046511627908) internal successors, (402), 355 states have internal predecessors, (402), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (19), 8 states have call predecessors, (19), 19 states have call successors, (19) [2021-04-16 06:45:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 441 transitions. [2021-04-16 06:45:29,925 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 441 transitions. Word has length 57 [2021-04-16 06:45:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:29,926 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 441 transitions. [2021-04-16 06:45:29,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:45:29,926 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 441 transitions. [2021-04-16 06:45:29,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-04-16 06:45:29,927 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:29,927 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:29,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-04-16 06:45:29,927 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:29,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:29,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1946369156, now seen corresponding path program 9 times [2021-04-16 06:45:29,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:29,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813364722] [2021-04-16 06:45:29,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:29,930 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:29,931 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:29,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:29,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:29,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:29,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:29,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:29,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:29,993 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:45:29,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:30,005 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-04-16 06:45:30,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:30,009 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:45:30,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:30,020 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:45:30,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:30,024 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:45:30,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:30,036 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:45:30,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:30,041 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:45:30,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:30,051 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:45:30,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:45:30,060 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-04-16 06:45:30,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:30,064 INFO L142 QuantifierPusher]: treesize reduction 56, result has 59.7 percent of original size [2021-04-16 06:45:30,066 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.6 percent of original size 76 [2021-04-16 06:45:30,086 INFO L142 QuantifierPusher]: treesize reduction 55, result has 64.3 percent of original size [2021-04-16 06:45:30,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-04-16 06:45:30,117 INFO L142 QuantifierPusher]: treesize reduction 55, result has 66.7 percent of original size [2021-04-16 06:45:30,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-04-16 06:45:30,157 INFO L142 QuantifierPusher]: treesize reduction 55, result has 66.3 percent of original size [2021-04-16 06:45:30,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-04-16 06:45:30,194 INFO L142 QuantifierPusher]: treesize reduction 20, result has 79.6 percent of original size [2021-04-16 06:45:30,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:45:30,217 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.6 percent of original size [2021-04-16 06:45:30,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:30,240 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.3 percent of original size [2021-04-16 06:45:30,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:45:30,270 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:45:30,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:30,280 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:45:30,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:30,302 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.0 percent of original size [2021-04-16 06:45:30,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:45:30,327 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:45:30,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:30,330 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:45:30,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:30,354 INFO L142 QuantifierPusher]: treesize reduction 27, result has 76.3 percent of original size [2021-04-16 06:45:30,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:45:30,387 INFO L142 QuantifierPusher]: treesize reduction 15, result has 83.0 percent of original size [2021-04-16 06:45:30,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:45:30,413 INFO L142 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-04-16 06:45:30,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:45:30,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:30,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:30,447 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-04-16 06:45:30,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:30,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:30,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:30,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:30,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:30,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:30,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:30,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:30,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:30,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:30,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:30,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:30,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813364722] [2021-04-16 06:45:30,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:30,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-04-16 06:45:30,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047907380] [2021-04-16 06:45:30,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-04-16 06:45:30,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:30,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-04-16 06:45:30,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:45:30,558 INFO L87 Difference]: Start difference. First operand 373 states and 441 transitions. Second operand has 27 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:31,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:31,888 INFO L93 Difference]: Finished difference Result 505 states and 599 transitions. [2021-04-16 06:45:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-04-16 06:45:31,889 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-04-16 06:45:31,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:31,890 INFO L225 Difference]: With dead ends: 505 [2021-04-16 06:45:31,890 INFO L226 Difference]: Without dead ends: 503 [2021-04-16 06:45:31,891 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1047.3ms TimeCoverageRelationStatistics Valid=388, Invalid=2264, Unknown=0, NotChecked=0, Total=2652 [2021-04-16 06:45:31,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-04-16 06:45:32,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 415. [2021-04-16 06:45:32,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 382 states have (on average 1.1727748691099475) internal successors, (448), 395 states have internal predecessors, (448), 22 states have call successors, (22), 11 states have call predecessors, (22), 10 states have return successors, (21), 8 states have call predecessors, (21), 21 states have call successors, (21) [2021-04-16 06:45:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 491 transitions. [2021-04-16 06:45:32,012 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 491 transitions. Word has length 55 [2021-04-16 06:45:32,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:32,012 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 491 transitions. [2021-04-16 06:45:32,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 491 transitions. [2021-04-16 06:45:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-04-16 06:45:32,013 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:32,013 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:32,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-04-16 06:45:32,013 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:32,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:32,013 INFO L82 PathProgramCache]: Analyzing trace with hash -426979644, now seen corresponding path program 10 times [2021-04-16 06:45:32,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:32,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806337878] [2021-04-16 06:45:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:32,017 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:32,018 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:32,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:32,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:32,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:32,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:32,074 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:32,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:32,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:32,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:32,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:32,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:32,104 INFO L142 QuantifierPusher]: treesize reduction 23, result has 62.3 percent of original size [2021-04-16 06:45:32,105 INFO L147 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size 31 [2021-04-16 06:45:32,122 INFO L142 QuantifierPusher]: treesize reduction 22, result has 69.0 percent of original size [2021-04-16 06:45:32,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:32,140 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size [2021-04-16 06:45:32,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:45:32,167 INFO L142 QuantifierPusher]: treesize reduction 22, result has 72.2 percent of original size [2021-04-16 06:45:32,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:45:32,190 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:45:32,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:32,210 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:45:32,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:32,231 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:45:32,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:32,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:32,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:32,260 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:45:32,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:32,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:32,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:32,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:32,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:32,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:32,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:32,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806337878] [2021-04-16 06:45:32,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:32,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:45:32,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537109733] [2021-04-16 06:45:32,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:45:32,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:32,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:45:32,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:45:32,342 INFO L87 Difference]: Start difference. First operand 415 states and 491 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:33,565 INFO L93 Difference]: Finished difference Result 475 states and 563 transitions. [2021-04-16 06:45:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-04-16 06:45:33,566 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-04-16 06:45:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:33,567 INFO L225 Difference]: With dead ends: 475 [2021-04-16 06:45:33,567 INFO L226 Difference]: Without dead ends: 473 [2021-04-16 06:45:33,568 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 847.6ms TimeCoverageRelationStatistics Valid=378, Invalid=1878, Unknown=0, NotChecked=0, Total=2256 [2021-04-16 06:45:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-04-16 06:45:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 424. [2021-04-16 06:45:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 391 states have (on average 1.1764705882352942) internal successors, (460), 404 states have internal predecessors, (460), 22 states have call successors, (22), 11 states have call predecessors, (22), 10 states have return successors, (21), 8 states have call predecessors, (21), 21 states have call successors, (21) [2021-04-16 06:45:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 503 transitions. [2021-04-16 06:45:33,685 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 503 transitions. Word has length 55 [2021-04-16 06:45:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:33,685 INFO L480 AbstractCegarLoop]: Abstraction has 424 states and 503 transitions. [2021-04-16 06:45:33,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 503 transitions. [2021-04-16 06:45:33,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-04-16 06:45:33,686 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:33,686 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:33,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-04-16 06:45:33,686 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:33,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:33,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1046366456, now seen corresponding path program 11 times [2021-04-16 06:45:33,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:33,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809549226] [2021-04-16 06:45:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:33,692 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:33,693 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:33,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:33,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:33,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:33,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:33,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:33,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:33,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:33,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:33,744 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:33,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:33,746 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-04-16 06:45:33,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:33,756 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-04-16 06:45:33,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:33,768 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.6 percent of original size [2021-04-16 06:45:33,769 INFO L147 QuantifierPusher]: treesize reduction 7, result has 84.4 percent of original size 38 [2021-04-16 06:45:33,791 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.3 percent of original size [2021-04-16 06:45:33,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:45:33,825 INFO L142 QuantifierPusher]: treesize reduction 27, result has 73.0 percent of original size [2021-04-16 06:45:33,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:45:33,859 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.2 percent of original size [2021-04-16 06:45:33,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:45:33,890 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:33,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:33,904 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:33,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:33,921 INFO L142 QuantifierPusher]: treesize reduction 23, result has 68.1 percent of original size [2021-04-16 06:45:33,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:33,953 INFO L142 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size [2021-04-16 06:45:33,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:33,953 INFO L142 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size [2021-04-16 06:45:33,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:33,970 INFO L142 QuantifierPusher]: treesize reduction 32, result has 65.6 percent of original size [2021-04-16 06:45:33,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:45:33,998 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.0 percent of original size [2021-04-16 06:45:33,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:45:34,021 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:34,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:34,037 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:45:34,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:34,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:34,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:34,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:34,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:34,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:34,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:34,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:34,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:34,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:34,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:34,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:34,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809549226] [2021-04-16 06:45:34,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:34,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:45:34,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213937676] [2021-04-16 06:45:34,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:45:34,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:34,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:45:34,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:45:34,130 INFO L87 Difference]: Start difference. First operand 424 states and 503 transitions. Second operand has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:35,271 INFO L93 Difference]: Finished difference Result 485 states and 574 transitions. [2021-04-16 06:45:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-04-16 06:45:35,271 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-04-16 06:45:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:35,273 INFO L225 Difference]: With dead ends: 485 [2021-04-16 06:45:35,273 INFO L226 Difference]: Without dead ends: 483 [2021-04-16 06:45:35,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 871.3ms TimeCoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2021-04-16 06:45:35,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-04-16 06:45:35,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 437. [2021-04-16 06:45:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 403 states have (on average 1.1786600496277915) internal successors, (475), 416 states have internal predecessors, (475), 22 states have call successors, (22), 12 states have call predecessors, (22), 11 states have return successors, (21), 8 states have call predecessors, (21), 21 states have call successors, (21) [2021-04-16 06:45:35,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 518 transitions. [2021-04-16 06:45:35,399 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 518 transitions. Word has length 55 [2021-04-16 06:45:35,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:35,399 INFO L480 AbstractCegarLoop]: Abstraction has 437 states and 518 transitions. [2021-04-16 06:45:35,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:35,399 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 518 transitions. [2021-04-16 06:45:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-04-16 06:45:35,400 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:35,400 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:35,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-04-16 06:45:35,400 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:35,400 INFO L82 PathProgramCache]: Analyzing trace with hash -140336322, now seen corresponding path program 12 times [2021-04-16 06:45:35,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:35,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355986262] [2021-04-16 06:45:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:35,407 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:35,408 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:35,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:35,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:35,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:35,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:35,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:35,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:35,467 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:45:35,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:35,480 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-04-16 06:45:35,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:35,484 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:45:35,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:35,497 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:45:35,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:35,502 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:45:35,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:35,515 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:45:35,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:35,521 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:45:35,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:35,533 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:45:35,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:45:35,543 INFO L142 QuantifierPusher]: treesize reduction 24, result has 52.0 percent of original size [2021-04-16 06:45:35,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:35,547 INFO L142 QuantifierPusher]: treesize reduction 30, result has 61.0 percent of original size [2021-04-16 06:45:35,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:45:35,563 INFO L142 QuantifierPusher]: treesize reduction 30, result has 59.5 percent of original size [2021-04-16 06:45:35,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:35,571 INFO L142 QuantifierPusher]: treesize reduction 32, result has 55.6 percent of original size [2021-04-16 06:45:35,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:45:35,579 INFO L142 QuantifierPusher]: treesize reduction 24, result has 52.0 percent of original size [2021-04-16 06:45:35,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:35,583 INFO L142 QuantifierPusher]: treesize reduction 38, result has 45.7 percent of original size [2021-04-16 06:45:35,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:45:35,605 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.7 percent of original size [2021-04-16 06:45:35,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:35,630 INFO L142 QuantifierPusher]: treesize reduction 40, result has 59.6 percent of original size [2021-04-16 06:45:35,631 INFO L147 QuantifierPusher]: treesize reduction 7, result has 88.1 percent of original size 52 [2021-04-16 06:45:35,662 INFO L142 QuantifierPusher]: treesize reduction 39, result has 64.5 percent of original size [2021-04-16 06:45:35,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:45:35,692 INFO L142 QuantifierPusher]: treesize reduction 39, result has 67.8 percent of original size [2021-04-16 06:45:35,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:45:35,739 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.9 percent of original size [2021-04-16 06:45:35,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:45:35,773 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:45:35,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:35,796 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:45:35,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:35,820 INFO L142 QuantifierPusher]: treesize reduction 15, result has 84.4 percent of original size [2021-04-16 06:45:35,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:45:35,850 INFO L142 QuantifierPusher]: treesize reduction 21, result has 76.1 percent of original size [2021-04-16 06:45:35,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:45:35,885 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:45:35,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:35,911 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:45:35,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:35,938 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:45:35,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:35,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:35,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:35,971 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-04-16 06:45:35,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:35,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:35,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:36,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:36,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:36,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:36,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:36,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:36,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:36,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:36,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:36,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:36,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355986262] [2021-04-16 06:45:36,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:36,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:45:36,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048795980] [2021-04-16 06:45:36,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:45:36,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:36,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:45:36,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:45:36,077 INFO L87 Difference]: Start difference. First operand 437 states and 518 transitions. Second operand has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:37,739 INFO L93 Difference]: Finished difference Result 537 states and 636 transitions. [2021-04-16 06:45:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-04-16 06:45:37,739 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-04-16 06:45:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:37,741 INFO L225 Difference]: With dead ends: 537 [2021-04-16 06:45:37,741 INFO L226 Difference]: Without dead ends: 535 [2021-04-16 06:45:37,741 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1302.7ms TimeCoverageRelationStatistics Valid=456, Invalid=2736, Unknown=0, NotChecked=0, Total=3192 [2021-04-16 06:45:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-04-16 06:45:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 389. [2021-04-16 06:45:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 365 states have (on average 1.1917808219178083) internal successors, (435), 373 states have internal predecessors, (435), 15 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (14), 6 states have call predecessors, (14), 14 states have call successors, (14) [2021-04-16 06:45:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 464 transitions. [2021-04-16 06:45:37,852 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 464 transitions. Word has length 55 [2021-04-16 06:45:37,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:37,853 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 464 transitions. [2021-04-16 06:45:37,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 464 transitions. [2021-04-16 06:45:37,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-04-16 06:45:37,854 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:37,854 INFO L519 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:37,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-04-16 06:45:37,854 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:37,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:37,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1524488624, now seen corresponding path program 12 times [2021-04-16 06:45:37,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:37,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146440339] [2021-04-16 06:45:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:37,858 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:37,859 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:37,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:37,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:37,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:37,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:37,928 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:45:37,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:37,934 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:45:37,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:37,941 INFO L142 QuantifierPusher]: treesize reduction 53, result has 35.4 percent of original size [2021-04-16 06:45:37,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:45:37,954 INFO L142 QuantifierPusher]: treesize reduction 25, result has 51.0 percent of original size [2021-04-16 06:45:37,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:37,967 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:37,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:37,976 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-04-16 06:45:37,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:45:37,980 INFO L142 QuantifierPusher]: treesize reduction 33, result has 53.5 percent of original size [2021-04-16 06:45:37,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:38,001 INFO L142 QuantifierPusher]: treesize reduction 35, result has 51.4 percent of original size [2021-04-16 06:45:38,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:45:38,024 INFO L142 QuantifierPusher]: treesize reduction 35, result has 59.3 percent of original size [2021-04-16 06:45:38,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:45:38,052 INFO L142 QuantifierPusher]: treesize reduction 52, result has 59.1 percent of original size [2021-04-16 06:45:38,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:45:38,095 INFO L142 QuantifierPusher]: treesize reduction 52, result has 63.1 percent of original size [2021-04-16 06:45:38,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-04-16 06:45:38,134 INFO L142 QuantifierPusher]: treesize reduction 52, result has 62.3 percent of original size [2021-04-16 06:45:38,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 06:45:38,169 INFO L142 QuantifierPusher]: treesize reduction 27, result has 44.9 percent of original size [2021-04-16 06:45:38,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:45:38,186 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size [2021-04-16 06:45:38,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:45:38,212 INFO L142 QuantifierPusher]: treesize reduction 33, result has 60.2 percent of original size [2021-04-16 06:45:38,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:45:38,240 INFO L142 QuantifierPusher]: treesize reduction 33, result has 50.7 percent of original size [2021-04-16 06:45:38,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:38,253 INFO L142 QuantifierPusher]: treesize reduction 33, result has 50.7 percent of original size [2021-04-16 06:45:38,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:38,279 INFO L142 QuantifierPusher]: treesize reduction 42, result has 70.4 percent of original size [2021-04-16 06:45:38,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:45:38,334 INFO L142 QuantifierPusher]: treesize reduction 43, result has 44.2 percent of original size [2021-04-16 06:45:38,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:38,335 INFO L142 QuantifierPusher]: treesize reduction 43, result has 43.4 percent of original size [2021-04-16 06:45:38,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:38,362 INFO L142 QuantifierPusher]: treesize reduction 42, result has 57.6 percent of original size [2021-04-16 06:45:38,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:45:38,386 INFO L142 QuantifierPusher]: treesize reduction 45, result has 62.5 percent of original size [2021-04-16 06:45:38,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:45:38,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:38,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:38,449 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:45:38,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:38,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:38,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:38,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:38,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:38,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:38,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:38,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:38,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:38,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:38,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:38,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:38,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146440339] [2021-04-16 06:45:38,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:38,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:45:38,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429059444] [2021-04-16 06:45:38,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:45:38,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:45:38,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:45:38,569 INFO L87 Difference]: Start difference. First operand 389 states and 464 transitions. Second operand has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:40,057 INFO L93 Difference]: Finished difference Result 526 states and 629 transitions. [2021-04-16 06:45:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-04-16 06:45:40,057 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-04-16 06:45:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:40,059 INFO L225 Difference]: With dead ends: 526 [2021-04-16 06:45:40,059 INFO L226 Difference]: Without dead ends: 524 [2021-04-16 06:45:40,059 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1080.4ms TimeCoverageRelationStatistics Valid=236, Invalid=1926, Unknown=0, NotChecked=0, Total=2162 [2021-04-16 06:45:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-04-16 06:45:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 398. [2021-04-16 06:45:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 374 states have (on average 1.195187165775401) internal successors, (447), 382 states have internal predecessors, (447), 15 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (14), 6 states have call predecessors, (14), 14 states have call successors, (14) [2021-04-16 06:45:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 476 transitions. [2021-04-16 06:45:40,174 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 476 transitions. Word has length 55 [2021-04-16 06:45:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:40,174 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 476 transitions. [2021-04-16 06:45:40,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 476 transitions. [2021-04-16 06:45:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-04-16 06:45:40,175 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:40,175 INFO L519 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:40,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-04-16 06:45:40,175 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:40,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:40,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1285024718, now seen corresponding path program 3 times [2021-04-16 06:45:40,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:40,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464664372] [2021-04-16 06:45:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:40,179 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:40,179 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:40,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:40,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:40,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:40,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:40,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:40,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:40,238 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:45:40,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:40,251 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-04-16 06:45:40,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:40,255 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-04-16 06:45:40,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:40,268 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-04-16 06:45:40,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:40,269 INFO L142 QuantifierPusher]: treesize reduction 51, result has 45.7 percent of original size [2021-04-16 06:45:40,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:45:40,283 INFO L142 QuantifierPusher]: treesize reduction 51, result has 40.7 percent of original size [2021-04-16 06:45:40,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:40,289 INFO L142 QuantifierPusher]: treesize reduction 16, result has 15.8 percent of original size [2021-04-16 06:45:40,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:40,294 INFO L142 QuantifierPusher]: treesize reduction 29, result has 29.3 percent of original size [2021-04-16 06:45:40,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:40,298 INFO L142 QuantifierPusher]: treesize reduction 65, result has 46.7 percent of original size [2021-04-16 06:45:40,298 INFO L147 QuantifierPusher]: treesize reduction 13, result has 77.2 percent of original size 44 [2021-04-16 06:45:40,317 INFO L142 QuantifierPusher]: treesize reduction 64, result has 53.3 percent of original size [2021-04-16 06:45:40,317 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.8 percent of original size 67 [2021-04-16 06:45:40,348 INFO L142 QuantifierPusher]: treesize reduction 71, result has 52.3 percent of original size [2021-04-16 06:45:40,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:45:40,389 INFO L142 QuantifierPusher]: treesize reduction 64, result has 56.2 percent of original size [2021-04-16 06:45:40,389 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.7 percent of original size 76 [2021-04-16 06:45:40,427 INFO L142 QuantifierPusher]: treesize reduction 23, result has 54.9 percent of original size [2021-04-16 06:45:40,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:40,446 INFO L142 QuantifierPusher]: treesize reduction 40, result has 49.4 percent of original size [2021-04-16 06:45:40,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:45:40,467 INFO L142 QuantifierPusher]: treesize reduction 43, result has 58.3 percent of original size [2021-04-16 06:45:40,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:45:40,494 INFO L142 QuantifierPusher]: treesize reduction 45, result has 46.4 percent of original size [2021-04-16 06:45:40,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:45:40,495 INFO L142 QuantifierPusher]: treesize reduction 47, result has 45.3 percent of original size [2021-04-16 06:45:40,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:45:40,524 INFO L142 QuantifierPusher]: treesize reduction 62, result has 60.0 percent of original size [2021-04-16 06:45:40,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:45:40,554 INFO L142 QuantifierPusher]: treesize reduction 34, result has 57.5 percent of original size [2021-04-16 06:45:40,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:45:40,579 INFO L142 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-04-16 06:45:40,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:45:40,605 INFO L142 QuantifierPusher]: treesize reduction 51, result has 56.4 percent of original size [2021-04-16 06:45:40,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:45:40,606 INFO L142 QuantifierPusher]: treesize reduction 49, result has 57.4 percent of original size [2021-04-16 06:45:40,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:45:40,607 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-04-16 06:45:40,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:45:40,629 INFO L142 QuantifierPusher]: treesize reduction 8, result has 82.2 percent of original size [2021-04-16 06:45:40,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:45:40,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:45:40,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:40,670 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:40,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:40,689 INFO L142 QuantifierPusher]: treesize reduction 32, result has 47.5 percent of original size [2021-04-16 06:45:40,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:45:40,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:45:40,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:45:40,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:40,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:40,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:40,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:40,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:40,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:40,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:40,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:40,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:40,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:40,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-04-16 06:45:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:40,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:40,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:40,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464664372] [2021-04-16 06:45:40,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:40,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:45:40,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596744616] [2021-04-16 06:45:40,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:45:40,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:40,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:45:40,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:45:40,829 INFO L87 Difference]: Start difference. First operand 398 states and 476 transitions. Second operand has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:43,120 INFO L93 Difference]: Finished difference Result 549 states and 655 transitions. [2021-04-16 06:45:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-04-16 06:45:43,121 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2021-04-16 06:45:43,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:43,123 INFO L225 Difference]: With dead ends: 549 [2021-04-16 06:45:43,123 INFO L226 Difference]: Without dead ends: 547 [2021-04-16 06:45:43,123 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 1772.7ms TimeCoverageRelationStatistics Valid=582, Invalid=4530, Unknown=0, NotChecked=0, Total=5112 [2021-04-16 06:45:43,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-04-16 06:45:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 461. [2021-04-16 06:45:43,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 426 states have (on average 1.1854460093896713) internal successors, (505), 439 states have internal predecessors, (505), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (22), 9 states have call predecessors, (22), 22 states have call successors, (22) [2021-04-16 06:45:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 550 transitions. [2021-04-16 06:45:43,262 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 550 transitions. Word has length 58 [2021-04-16 06:45:43,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:43,262 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 550 transitions. [2021-04-16 06:45:43,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:43,262 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 550 transitions. [2021-04-16 06:45:43,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-04-16 06:45:43,263 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:43,263 INFO L519 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:43,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-04-16 06:45:43,263 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:43,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:43,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1642798748, now seen corresponding path program 4 times [2021-04-16 06:45:43,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:43,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732842360] [2021-04-16 06:45:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:43,267 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:43,268 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:43,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:43,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:43,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:43,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:43,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:43,349 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:43,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:43,352 INFO L142 QuantifierPusher]: treesize reduction 20, result has 65.5 percent of original size [2021-04-16 06:45:43,352 INFO L147 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size 31 [2021-04-16 06:45:43,366 INFO L142 QuantifierPusher]: treesize reduction 28, result has 64.1 percent of original size [2021-04-16 06:45:43,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:45:43,386 INFO L142 QuantifierPusher]: treesize reduction 28, result has 68.9 percent of original size [2021-04-16 06:45:43,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:45:43,409 INFO L142 QuantifierPusher]: treesize reduction 11, result has 79.2 percent of original size [2021-04-16 06:45:43,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:45:43,432 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.7 percent of original size [2021-04-16 06:45:43,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:43,442 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.0 percent of original size [2021-04-16 06:45:43,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:45:43,451 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.7 percent of original size [2021-04-16 06:45:43,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:43,473 INFO L142 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-04-16 06:45:43,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:45:43,494 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.3 percent of original size [2021-04-16 06:45:43,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:45:43,525 INFO L142 QuantifierPusher]: treesize reduction 22, result has 75.8 percent of original size [2021-04-16 06:45:43,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:45:43,556 INFO L142 QuantifierPusher]: treesize reduction 22, result has 77.3 percent of original size [2021-04-16 06:45:43,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:45:43,596 INFO L142 QuantifierPusher]: treesize reduction 22, result has 76.6 percent of original size [2021-04-16 06:45:43,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:45:43,632 INFO L142 QuantifierPusher]: treesize reduction 42, result has 65.0 percent of original size [2021-04-16 06:45:43,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:45:43,677 INFO L142 QuantifierPusher]: treesize reduction 32, result has 75.6 percent of original size [2021-04-16 06:45:43,677 INFO L147 QuantifierPusher]: treesize reduction 10, result has 89.9 percent of original size 89 [2021-04-16 06:45:43,714 INFO L142 QuantifierPusher]: treesize reduction 32, result has 75.2 percent of original size [2021-04-16 06:45:43,715 INFO L147 QuantifierPusher]: treesize reduction 10, result has 89.7 percent of original size 87 [2021-04-16 06:45:43,750 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-04-16 06:45:43,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:43,773 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-04-16 06:45:43,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:45:43,796 INFO L142 QuantifierPusher]: treesize reduction 14, result has 72.0 percent of original size [2021-04-16 06:45:43,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:43,818 INFO L142 QuantifierPusher]: treesize reduction 14, result has 70.8 percent of original size [2021-04-16 06:45:43,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:43,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:43,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:43,860 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:45:43,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:45:43,880 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:45:43,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:45:43,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:43,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:43,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:43,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:43,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:43,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:43,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-04-16 06:45:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:43,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:43,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:43,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732842360] [2021-04-16 06:45:43,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:43,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-04-16 06:45:43,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834081016] [2021-04-16 06:45:43,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-04-16 06:45:43,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:43,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-04-16 06:45:43,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:45:43,999 INFO L87 Difference]: Start difference. First operand 461 states and 550 transitions. Second operand has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 28 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:45,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:45,832 INFO L93 Difference]: Finished difference Result 521 states and 620 transitions. [2021-04-16 06:45:45,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-04-16 06:45:45,833 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 28 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2021-04-16 06:45:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:45,834 INFO L225 Difference]: With dead ends: 521 [2021-04-16 06:45:45,834 INFO L226 Difference]: Without dead ends: 519 [2021-04-16 06:45:45,835 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1634.1ms TimeCoverageRelationStatistics Valid=447, Invalid=3093, Unknown=0, NotChecked=0, Total=3540 [2021-04-16 06:45:45,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-04-16 06:45:45,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 465. [2021-04-16 06:45:45,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 429 states have (on average 1.1841491841491842) internal successors, (508), 442 states have internal predecessors, (508), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (22), 9 states have call predecessors, (22), 22 states have call successors, (22) [2021-04-16 06:45:45,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 553 transitions. [2021-04-16 06:45:45,982 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 553 transitions. Word has length 58 [2021-04-16 06:45:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:45,982 INFO L480 AbstractCegarLoop]: Abstraction has 465 states and 553 transitions. [2021-04-16 06:45:45,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 28 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 553 transitions. [2021-04-16 06:45:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-04-16 06:45:45,983 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:45,983 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:45,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-04-16 06:45:45,983 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:45,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:45,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1797092794, now seen corresponding path program 5 times [2021-04-16 06:45:45,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:45,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743598862] [2021-04-16 06:45:45,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:45,989 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:45,990 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:46,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:46,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:46,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:46,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:46,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:46,043 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:46,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:46,046 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-04-16 06:45:46,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:46,049 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-04-16 06:45:46,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:46,064 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-04-16 06:45:46,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:46,068 INFO L142 QuantifierPusher]: treesize reduction 53, result has 22.1 percent of original size [2021-04-16 06:45:46,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:46,081 INFO L142 QuantifierPusher]: treesize reduction 41, result has 69.9 percent of original size [2021-04-16 06:45:46,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-04-16 06:45:46,117 INFO L142 QuantifierPusher]: treesize reduction 41, result has 73.0 percent of original size [2021-04-16 06:45:46,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-04-16 06:45:46,166 INFO L142 QuantifierPusher]: treesize reduction 57, result has 54.4 percent of original size [2021-04-16 06:45:46,167 INFO L147 QuantifierPusher]: treesize reduction 9, result has 86.8 percent of original size 59 [2021-04-16 06:45:46,190 INFO L142 QuantifierPusher]: treesize reduction 25, result has 67.1 percent of original size [2021-04-16 06:45:46,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:45:46,209 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:46,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:46,210 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-04-16 06:45:46,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:45:46,223 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:45:46,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:46,239 INFO L142 QuantifierPusher]: treesize reduction 26, result has 69.0 percent of original size [2021-04-16 06:45:46,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:45:46,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:46,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:46,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:46,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:46,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-04-16 06:45:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:46,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:46,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-04-16 06:45:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:46,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:46,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:46,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743598862] [2021-04-16 06:45:46,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:46,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:45:46,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34594210] [2021-04-16 06:45:46,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:45:46,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:46,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:45:46,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:45:46,326 INFO L87 Difference]: Start difference. First operand 465 states and 553 transitions. Second operand has 19 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:45:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:47,067 INFO L93 Difference]: Finished difference Result 512 states and 608 transitions. [2021-04-16 06:45:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:45:47,068 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2021-04-16 06:45:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:47,069 INFO L225 Difference]: With dead ends: 512 [2021-04-16 06:45:47,069 INFO L226 Difference]: Without dead ends: 510 [2021-04-16 06:45:47,070 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 437.6ms TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2021-04-16 06:45:47,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-04-16 06:45:47,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 451. [2021-04-16 06:45:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 420 states have (on average 1.1904761904761905) internal successors, (500), 431 states have internal predecessors, (500), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 8 states have call predecessors, (19), 19 states have call successors, (19) [2021-04-16 06:45:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 539 transitions. [2021-04-16 06:45:47,213 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 539 transitions. Word has length 60 [2021-04-16 06:45:47,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:47,213 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 539 transitions. [2021-04-16 06:45:47,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:45:47,213 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 539 transitions. [2021-04-16 06:45:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-04-16 06:45:47,214 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:47,214 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:47,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-04-16 06:45:47,214 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:47,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:47,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1104308479, now seen corresponding path program 13 times [2021-04-16 06:45:47,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:47,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703804390] [2021-04-16 06:45:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:47,218 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:47,219 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:47,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:47,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:47,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:47,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:47,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:47,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:47,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:47,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:47,262 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:47,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:47,265 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:47,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:47,270 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:47,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:47,277 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:47,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:47,284 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:47,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:47,292 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:47,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:47,300 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:47,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:47,308 INFO L142 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-04-16 06:45:47,309 INFO L147 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size 27 [2021-04-16 06:45:47,327 INFO L142 QuantifierPusher]: treesize reduction 22, result has 67.2 percent of original size [2021-04-16 06:45:47,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:47,346 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.4 percent of original size [2021-04-16 06:45:47,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:45:47,373 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-04-16 06:45:47,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:45:47,394 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:47,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:47,406 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:45:47,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:47,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:47,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:47,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:47,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:47,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:47,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:47,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:47,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:47,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:47,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:47,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:47,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703804390] [2021-04-16 06:45:47,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:47,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:45:47,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394884127] [2021-04-16 06:45:47,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:45:47,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:47,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:45:47,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:45:47,483 INFO L87 Difference]: Start difference. First operand 451 states and 539 transitions. Second operand has 21 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:48,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:48,971 INFO L93 Difference]: Finished difference Result 659 states and 803 transitions. [2021-04-16 06:45:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-04-16 06:45:48,972 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-04-16 06:45:48,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:48,974 INFO L225 Difference]: With dead ends: 659 [2021-04-16 06:45:48,974 INFO L226 Difference]: Without dead ends: 657 [2021-04-16 06:45:48,974 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 967.4ms TimeCoverageRelationStatistics Valid=999, Invalid=3423, Unknown=0, NotChecked=0, Total=4422 [2021-04-16 06:45:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-04-16 06:45:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 495. [2021-04-16 06:45:49,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 462 states have (on average 1.2012987012987013) internal successors, (555), 474 states have internal predecessors, (555), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 8 states have call predecessors, (20), 20 states have call successors, (20) [2021-04-16 06:45:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 596 transitions. [2021-04-16 06:45:49,118 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 596 transitions. Word has length 58 [2021-04-16 06:45:49,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:49,118 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 596 transitions. [2021-04-16 06:45:49,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 596 transitions. [2021-04-16 06:45:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-04-16 06:45:49,119 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:49,119 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:49,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-04-16 06:45:49,119 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:49,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:49,119 INFO L82 PathProgramCache]: Analyzing trace with hash -403243901, now seen corresponding path program 13 times [2021-04-16 06:45:49,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:49,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348874908] [2021-04-16 06:45:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:49,131 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:49,132 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:49,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:49,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:49,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:49,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:49,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:49,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:49,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:49,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:49,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:49,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:49,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:49,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:49,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:49,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348874908] [2021-04-16 06:45:49,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:49,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 06:45:49,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479434320] [2021-04-16 06:45:49,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 06:45:49,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:49,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 06:45:49,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:45:49,202 INFO L87 Difference]: Start difference. First operand 495 states and 596 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:49,782 INFO L93 Difference]: Finished difference Result 607 states and 740 transitions. [2021-04-16 06:45:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:45:49,783 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-04-16 06:45:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:49,785 INFO L225 Difference]: With dead ends: 607 [2021-04-16 06:45:49,785 INFO L226 Difference]: Without dead ends: 581 [2021-04-16 06:45:49,785 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 202.0ms TimeCoverageRelationStatistics Valid=265, Invalid=727, Unknown=0, NotChecked=0, Total=992 [2021-04-16 06:45:49,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-04-16 06:45:49,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 500. [2021-04-16 06:45:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 467 states have (on average 1.2012847965738758) internal successors, (561), 479 states have internal predecessors, (561), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 8 states have call predecessors, (20), 20 states have call successors, (20) [2021-04-16 06:45:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 602 transitions. [2021-04-16 06:45:49,933 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 602 transitions. Word has length 58 [2021-04-16 06:45:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:49,934 INFO L480 AbstractCegarLoop]: Abstraction has 500 states and 602 transitions. [2021-04-16 06:45:49,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 602 transitions. [2021-04-16 06:45:49,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-04-16 06:45:49,934 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:49,934 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:49,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-04-16 06:45:49,935 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:49,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:49,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1786782527, now seen corresponding path program 14 times [2021-04-16 06:45:49,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:49,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544753103] [2021-04-16 06:45:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:49,938 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:49,939 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:49,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:49,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:49,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:49,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:49,985 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:49,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:49,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:49,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:49,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:50,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:50,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:50,019 INFO L142 QuantifierPusher]: treesize reduction 23, result has 62.3 percent of original size [2021-04-16 06:45:50,020 INFO L147 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size 31 [2021-04-16 06:45:50,040 INFO L142 QuantifierPusher]: treesize reduction 22, result has 69.0 percent of original size [2021-04-16 06:45:50,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:50,062 INFO L142 QuantifierPusher]: treesize reduction 22, result has 72.8 percent of original size [2021-04-16 06:45:50,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:45:50,087 INFO L142 QuantifierPusher]: treesize reduction 22, result has 72.2 percent of original size [2021-04-16 06:45:50,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:45:50,111 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:45:50,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:50,130 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:45:50,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:50,152 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.2 percent of original size [2021-04-16 06:45:50,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:45:50,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:45:50,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:50,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:45:50,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:50,207 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:45:50,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:50,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:50,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:50,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:50,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:50,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:50,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544753103] [2021-04-16 06:45:50,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:50,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:45:50,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084652375] [2021-04-16 06:45:50,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:45:50,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:50,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:45:50,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:45:50,294 INFO L87 Difference]: Start difference. First operand 500 states and 602 transitions. Second operand has 23 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:51,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:51,783 INFO L93 Difference]: Finished difference Result 596 states and 720 transitions. [2021-04-16 06:45:51,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-04-16 06:45:51,784 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-04-16 06:45:51,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:51,786 INFO L225 Difference]: With dead ends: 596 [2021-04-16 06:45:51,786 INFO L226 Difference]: Without dead ends: 594 [2021-04-16 06:45:51,786 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 965.0ms TimeCoverageRelationStatistics Valid=419, Invalid=2233, Unknown=0, NotChecked=0, Total=2652 [2021-04-16 06:45:51,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-04-16 06:45:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 515. [2021-04-16 06:45:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 482 states have (on average 1.2053941908713692) internal successors, (581), 494 states have internal predecessors, (581), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 8 states have call predecessors, (20), 20 states have call successors, (20) [2021-04-16 06:45:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 622 transitions. [2021-04-16 06:45:51,939 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 622 transitions. Word has length 58 [2021-04-16 06:45:51,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:51,939 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 622 transitions. [2021-04-16 06:45:51,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 622 transitions. [2021-04-16 06:45:51,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-04-16 06:45:51,940 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:51,940 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:51,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-04-16 06:45:51,940 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:51,940 INFO L82 PathProgramCache]: Analyzing trace with hash -266865911, now seen corresponding path program 14 times [2021-04-16 06:45:51,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:51,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101290593] [2021-04-16 06:45:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:51,944 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:51,945 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:51,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:51,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:51,989 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-04-16 06:45:51,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:51,995 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:45:51,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:52,002 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:45:52,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:52,010 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:45:52,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:52,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,026 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:52,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,029 INFO L142 QuantifierPusher]: treesize reduction 20, result has 37.5 percent of original size [2021-04-16 06:45:52,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:52,033 INFO L142 QuantifierPusher]: treesize reduction 20, result has 37.5 percent of original size [2021-04-16 06:45:52,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:45:52,038 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-04-16 06:45:52,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:52,054 INFO L142 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-04-16 06:45:52,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:52,072 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-04-16 06:45:52,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:52,091 INFO L142 QuantifierPusher]: treesize reduction 20, result has 53.5 percent of original size [2021-04-16 06:45:52,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:45:52,102 INFO L142 QuantifierPusher]: treesize reduction 20, result has 64.3 percent of original size [2021-04-16 06:45:52,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:52,131 INFO L142 QuantifierPusher]: treesize reduction 26, result has 73.2 percent of original size [2021-04-16 06:45:52,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:45:52,174 INFO L142 QuantifierPusher]: treesize reduction 26, result has 76.4 percent of original size [2021-04-16 06:45:52,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:45:52,208 INFO L142 QuantifierPusher]: treesize reduction 26, result has 75.9 percent of original size [2021-04-16 06:45:52,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:45:52,241 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.8 percent of original size [2021-04-16 06:45:52,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:52,265 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:45:52,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:45:52,288 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:45:52,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:52,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:52,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:52,326 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:45:52,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:52,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:52,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:52,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:52,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:52,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:52,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101290593] [2021-04-16 06:45:52,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:52,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:45:52,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605797824] [2021-04-16 06:45:52,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:45:52,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:52,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:45:52,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:45:52,424 INFO L87 Difference]: Start difference. First operand 515 states and 622 transitions. Second operand has 24 states, 23 states have (on average 2.347826086956522) internal successors, (54), 22 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:53,900 INFO L93 Difference]: Finished difference Result 606 states and 727 transitions. [2021-04-16 06:45:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-04-16 06:45:53,901 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.347826086956522) internal successors, (54), 22 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-04-16 06:45:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:53,903 INFO L225 Difference]: With dead ends: 606 [2021-04-16 06:45:53,903 INFO L226 Difference]: Without dead ends: 604 [2021-04-16 06:45:53,903 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 934.8ms TimeCoverageRelationStatistics Valid=245, Invalid=1825, Unknown=0, NotChecked=0, Total=2070 [2021-04-16 06:45:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-04-16 06:45:54,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 509. [2021-04-16 06:45:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 477 states have (on average 1.2054507337526206) internal successors, (575), 488 states have internal predecessors, (575), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 8 states have call predecessors, (19), 19 states have call successors, (19) [2021-04-16 06:45:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 614 transitions. [2021-04-16 06:45:54,056 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 614 transitions. Word has length 58 [2021-04-16 06:45:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:54,056 INFO L480 AbstractCegarLoop]: Abstraction has 509 states and 614 transitions. [2021-04-16 06:45:54,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.347826086956522) internal successors, (54), 22 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 614 transitions. [2021-04-16 06:45:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-04-16 06:45:54,057 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:54,057 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:54,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-04-16 06:45:54,057 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:54,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:54,057 INFO L82 PathProgramCache]: Analyzing trace with hash 396084749, now seen corresponding path program 15 times [2021-04-16 06:45:54,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:54,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507251285] [2021-04-16 06:45:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:54,069 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:54,070 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:54,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:54,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:54,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:54,131 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-04-16 06:45:54,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:54,144 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-04-16 06:45:54,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:54,148 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:45:54,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:54,159 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:45:54,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:54,164 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:45:54,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:54,176 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:45:54,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:45:54,182 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:45:54,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:54,193 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:45:54,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:45:54,201 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:45:54,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:54,205 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:45:54,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:54,208 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:45:54,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:45:54,211 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:45:54,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:54,215 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:45:54,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:54,218 INFO L142 QuantifierPusher]: treesize reduction 38, result has 45.7 percent of original size [2021-04-16 06:45:54,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:45:54,246 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-04-16 06:45:54,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:45:54,268 INFO L142 QuantifierPusher]: treesize reduction 45, result has 57.5 percent of original size [2021-04-16 06:45:54,268 INFO L147 QuantifierPusher]: treesize reduction 7, result has 88.5 percent of original size 54 [2021-04-16 06:45:54,306 INFO L142 QuantifierPusher]: treesize reduction 39, result has 64.5 percent of original size [2021-04-16 06:45:54,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:45:54,337 INFO L142 QuantifierPusher]: treesize reduction 39, result has 67.8 percent of original size [2021-04-16 06:45:54,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:45:54,379 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.9 percent of original size [2021-04-16 06:45:54,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:45:54,414 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:45:54,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:54,438 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:45:54,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:54,463 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.0 percent of original size [2021-04-16 06:45:54,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:45:54,492 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:45:54,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:54,493 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:45:54,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:45:54,536 INFO L142 QuantifierPusher]: treesize reduction 20, result has 81.3 percent of original size [2021-04-16 06:45:54,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:45:54,571 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.5 percent of original size [2021-04-16 06:45:54,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:45:54,601 INFO L142 QuantifierPusher]: treesize reduction 19, result has 62.7 percent of original size [2021-04-16 06:45:54,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:45:54,624 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-04-16 06:45:54,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:54,644 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-04-16 06:45:54,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:45:54,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:54,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:54,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:54,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:54,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:54,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507251285] [2021-04-16 06:45:54,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:54,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-04-16 06:45:54,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337903445] [2021-04-16 06:45:54,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-04-16 06:45:54,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:54,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-04-16 06:45:54,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:45:54,756 INFO L87 Difference]: Start difference. First operand 509 states and 614 transitions. Second operand has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:57,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:57,052 INFO L93 Difference]: Finished difference Result 736 states and 889 transitions. [2021-04-16 06:45:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-04-16 06:45:57,058 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-04-16 06:45:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:57,060 INFO L225 Difference]: With dead ends: 736 [2021-04-16 06:45:57,060 INFO L226 Difference]: Without dead ends: 694 [2021-04-16 06:45:57,060 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 5 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 1539.3ms TimeCoverageRelationStatistics Valid=522, Invalid=3638, Unknown=0, NotChecked=0, Total=4160 [2021-04-16 06:45:57,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-04-16 06:45:57,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 538. [2021-04-16 06:45:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 506 states have (on average 1.209486166007905) internal successors, (612), 517 states have internal predecessors, (612), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 8 states have call predecessors, (19), 19 states have call successors, (19) [2021-04-16 06:45:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 651 transitions. [2021-04-16 06:45:57,219 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 651 transitions. Word has length 58 [2021-04-16 06:45:57,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:57,219 INFO L480 AbstractCegarLoop]: Abstraction has 538 states and 651 transitions. [2021-04-16 06:45:57,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 651 transitions. [2021-04-16 06:45:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-04-16 06:45:57,220 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:57,220 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:57,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-04-16 06:45:57,220 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:57,221 INFO L82 PathProgramCache]: Analyzing trace with hash -441878337, now seen corresponding path program 15 times [2021-04-16 06:45:57,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:57,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561793779] [2021-04-16 06:45:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:57,224 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:57,225 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:57,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:57,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:57,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:57,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:57,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:57,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:57,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:57,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:57,299 INFO L142 QuantifierPusher]: treesize reduction 65, result has 13.3 percent of original size [2021-04-16 06:45:57,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:57,306 INFO L142 QuantifierPusher]: treesize reduction 13, result has 66.7 percent of original size [2021-04-16 06:45:57,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:45:57,319 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:45:57,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:45:57,328 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-04-16 06:45:57,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:45:57,332 INFO L142 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-04-16 06:45:57,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:45:57,344 INFO L142 QuantifierPusher]: treesize reduction 28, result has 58.2 percent of original size [2021-04-16 06:45:57,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:45:57,368 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.6 percent of original size [2021-04-16 06:45:57,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:45:57,396 INFO L142 QuantifierPusher]: treesize reduction 28, result has 60.0 percent of original size [2021-04-16 06:45:57,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:45:57,423 INFO L142 QuantifierPusher]: treesize reduction 28, result has 66.3 percent of original size [2021-04-16 06:45:57,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:45:57,467 INFO L142 QuantifierPusher]: treesize reduction 52, result has 59.1 percent of original size [2021-04-16 06:45:57,467 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.3 percent of original size 67 [2021-04-16 06:45:57,509 INFO L142 QuantifierPusher]: treesize reduction 50, result has 64.3 percent of original size [2021-04-16 06:45:57,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-04-16 06:45:57,559 INFO L142 QuantifierPusher]: treesize reduction 50, result has 63.8 percent of original size [2021-04-16 06:45:57,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:45:57,605 INFO L142 QuantifierPusher]: treesize reduction 28, result has 54.8 percent of original size [2021-04-16 06:45:57,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:57,630 INFO L142 QuantifierPusher]: treesize reduction 28, result has 54.8 percent of original size [2021-04-16 06:45:57,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:57,656 INFO L142 QuantifierPusher]: treesize reduction 34, result has 74.6 percent of original size [2021-04-16 06:45:57,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:45:57,711 INFO L142 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-04-16 06:45:57,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:45:57,712 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.9 percent of original size [2021-04-16 06:45:57,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:45:57,739 INFO L142 QuantifierPusher]: treesize reduction 23, result has 71.3 percent of original size [2021-04-16 06:45:57,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:45:57,764 INFO L142 QuantifierPusher]: treesize reduction 37, result has 67.0 percent of original size [2021-04-16 06:45:57,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:45:57,807 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:45:57,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:57,828 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:45:57,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:57,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:57,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:57,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:57,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:57,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:57,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:57,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:57,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:57,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:57,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:57,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561793779] [2021-04-16 06:45:57,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:57,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:45:57,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748538091] [2021-04-16 06:45:57,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:45:57,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:57,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:45:57,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:45:57,944 INFO L87 Difference]: Start difference. First operand 538 states and 651 transitions. Second operand has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:59,804 INFO L93 Difference]: Finished difference Result 652 states and 787 transitions. [2021-04-16 06:45:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-04-16 06:45:59,805 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-04-16 06:45:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:59,807 INFO L225 Difference]: With dead ends: 652 [2021-04-16 06:45:59,807 INFO L226 Difference]: Without dead ends: 650 [2021-04-16 06:45:59,807 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1364.5ms TimeCoverageRelationStatistics Valid=323, Invalid=2647, Unknown=0, NotChecked=0, Total=2970 [2021-04-16 06:45:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-04-16 06:45:59,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 560. [2021-04-16 06:45:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 525 states have (on average 1.2095238095238094) internal successors, (635), 538 states have internal predecessors, (635), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 8 states have call predecessors, (21), 21 states have call successors, (21) [2021-04-16 06:45:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 678 transitions. [2021-04-16 06:45:59,974 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 678 transitions. Word has length 58 [2021-04-16 06:45:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:59,974 INFO L480 AbstractCegarLoop]: Abstraction has 560 states and 678 transitions. [2021-04-16 06:45:59,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 678 transitions. [2021-04-16 06:45:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-04-16 06:45:59,975 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:59,975 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:59,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-04-16 06:45:59,975 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:59,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:59,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2022038101, now seen corresponding path program 16 times [2021-04-16 06:45:59,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:59,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976951176] [2021-04-16 06:45:59,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:59,979 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:59,979 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:00,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:00,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:00,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:00,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:00,040 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:46:00,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:00,046 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:46:00,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:00,053 INFO L142 QuantifierPusher]: treesize reduction 59, result has 23.4 percent of original size [2021-04-16 06:46:00,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:46:00,065 INFO L142 QuantifierPusher]: treesize reduction 22, result has 54.2 percent of original size [2021-04-16 06:46:00,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:00,078 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:46:00,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:00,088 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-04-16 06:46:00,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:46:00,091 INFO L142 QuantifierPusher]: treesize reduction 33, result has 53.5 percent of original size [2021-04-16 06:46:00,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:46:00,114 INFO L142 QuantifierPusher]: treesize reduction 35, result has 51.4 percent of original size [2021-04-16 06:46:00,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:46:00,138 INFO L142 QuantifierPusher]: treesize reduction 35, result has 59.3 percent of original size [2021-04-16 06:46:00,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:46:00,168 INFO L142 QuantifierPusher]: treesize reduction 52, result has 59.1 percent of original size [2021-04-16 06:46:00,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:46:00,212 INFO L142 QuantifierPusher]: treesize reduction 52, result has 63.1 percent of original size [2021-04-16 06:46:00,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-04-16 06:46:00,251 INFO L142 QuantifierPusher]: treesize reduction 52, result has 62.3 percent of original size [2021-04-16 06:46:00,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 06:46:00,286 INFO L142 QuantifierPusher]: treesize reduction 27, result has 44.9 percent of original size [2021-04-16 06:46:00,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:46:00,304 INFO L142 QuantifierPusher]: treesize reduction 38, result has 52.5 percent of original size [2021-04-16 06:46:00,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:46:00,329 INFO L142 QuantifierPusher]: treesize reduction 38, result has 60.4 percent of original size [2021-04-16 06:46:00,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:46:00,373 INFO L142 QuantifierPusher]: treesize reduction 38, result has 52.5 percent of original size [2021-04-16 06:46:00,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:46:00,374 INFO L142 QuantifierPusher]: treesize reduction 39, result has 51.9 percent of original size [2021-04-16 06:46:00,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:46:00,402 INFO L142 QuantifierPusher]: treesize reduction 43, result has 71.5 percent of original size [2021-04-16 06:46:00,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-04-16 06:46:00,457 INFO L142 QuantifierPusher]: treesize reduction 29, result has 59.2 percent of original size [2021-04-16 06:46:00,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:46:00,458 INFO L142 QuantifierPusher]: treesize reduction 29, result has 58.6 percent of original size [2021-04-16 06:46:00,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:00,486 INFO L142 QuantifierPusher]: treesize reduction 29, result has 69.1 percent of original size [2021-04-16 06:46:00,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:46:00,518 INFO L142 QuantifierPusher]: treesize reduction 63, result has 56.3 percent of original size [2021-04-16 06:46:00,521 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.4 percent of original size 74 [2021-04-16 06:46:00,558 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:46:00,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:46:00,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:46:00,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:46:00,603 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:46:00,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:46:00,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:00,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:00,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:00,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:00,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:00,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:00,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:00,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:00,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:00,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:00,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:00,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976951176] [2021-04-16 06:46:00,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:00,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-04-16 06:46:00,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328714857] [2021-04-16 06:46:00,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-04-16 06:46:00,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:00,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-04-16 06:46:00,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2021-04-16 06:46:00,714 INFO L87 Difference]: Start difference. First operand 560 states and 678 transitions. Second operand has 29 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:02,542 INFO L93 Difference]: Finished difference Result 705 states and 847 transitions. [2021-04-16 06:46:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-04-16 06:46:02,542 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-04-16 06:46:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:02,544 INFO L225 Difference]: With dead ends: 705 [2021-04-16 06:46:02,544 INFO L226 Difference]: Without dead ends: 703 [2021-04-16 06:46:02,545 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 1291.6ms TimeCoverageRelationStatistics Valid=347, Invalid=2623, Unknown=0, NotChecked=0, Total=2970 [2021-04-16 06:46:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-04-16 06:46:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 535. [2021-04-16 06:46:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 503 states have (on average 1.2127236580516898) internal successors, (610), 514 states have internal predecessors, (610), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 8 states have call predecessors, (19), 19 states have call successors, (19) [2021-04-16 06:46:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 649 transitions. [2021-04-16 06:46:02,707 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 649 transitions. Word has length 58 [2021-04-16 06:46:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:02,708 INFO L480 AbstractCegarLoop]: Abstraction has 535 states and 649 transitions. [2021-04-16 06:46:02,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 649 transitions. [2021-04-16 06:46:02,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-04-16 06:46:02,708 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:02,709 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:02,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-04-16 06:46:02,709 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:02,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:02,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1349061435, now seen corresponding path program 6 times [2021-04-16 06:46:02,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:02,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915244111] [2021-04-16 06:46:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:02,714 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:02,715 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:02,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:02,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:02,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:02,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:02,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:02,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:02,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:02,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:02,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:02,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:02,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:02,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:02,769 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:46:02,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:02,773 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-04-16 06:46:02,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:46:02,784 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-04-16 06:46:02,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:46:02,808 INFO L142 QuantifierPusher]: treesize reduction 11, result has 76.6 percent of original size [2021-04-16 06:46:02,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:02,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:46:02,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:02,840 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:46:02,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:46:02,855 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size [2021-04-16 06:46:02,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:46:02,873 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:46:02,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:46:02,874 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:46:02,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:46:02,891 INFO L142 QuantifierPusher]: treesize reduction 5, result has 92.2 percent of original size [2021-04-16 06:46:02,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:46:02,914 INFO L142 QuantifierPusher]: treesize reduction 4, result has 88.6 percent of original size [2021-04-16 06:46:02,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:46:02,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:02,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:46:02,947 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-04-16 06:46:02,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:02,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:02,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:02,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:02,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:03,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:03,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:03,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:03,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:03,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:03,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:03,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:03,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:03,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-04-16 06:46:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:03,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:03,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:03,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915244111] [2021-04-16 06:46:03,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:03,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:46:03,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049057307] [2021-04-16 06:46:03,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:46:03,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:03,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:46:03,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:46:03,071 INFO L87 Difference]: Start difference. First operand 535 states and 649 transitions. Second operand has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:04,417 INFO L93 Difference]: Finished difference Result 650 states and 789 transitions. [2021-04-16 06:46:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-04-16 06:46:04,417 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2021-04-16 06:46:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:04,419 INFO L225 Difference]: With dead ends: 650 [2021-04-16 06:46:04,419 INFO L226 Difference]: Without dead ends: 648 [2021-04-16 06:46:04,420 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 772.5ms TimeCoverageRelationStatistics Valid=186, Invalid=1536, Unknown=0, NotChecked=0, Total=1722 [2021-04-16 06:46:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-04-16 06:46:04,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 594. [2021-04-16 06:46:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 553 states have (on average 1.2061482820976492) internal successors, (667), 568 states have internal predecessors, (667), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (26), 11 states have call predecessors, (26), 26 states have call successors, (26) [2021-04-16 06:46:04,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 720 transitions. [2021-04-16 06:46:04,621 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 720 transitions. Word has length 60 [2021-04-16 06:46:04,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:04,621 INFO L480 AbstractCegarLoop]: Abstraction has 594 states and 720 transitions. [2021-04-16 06:46:04,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 720 transitions. [2021-04-16 06:46:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-04-16 06:46:04,623 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:04,623 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:04,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-04-16 06:46:04,623 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:04,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:04,623 INFO L82 PathProgramCache]: Analyzing trace with hash 117942087, now seen corresponding path program 7 times [2021-04-16 06:46:04,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:04,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374331332] [2021-04-16 06:46:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:04,627 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:04,628 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:04,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:04,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:04,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:04,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:04,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:04,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:04,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:04,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:04,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:04,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:04,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:04,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:04,735 INFO L142 QuantifierPusher]: treesize reduction 20, result has 13.0 percent of original size [2021-04-16 06:46:04,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:04,739 INFO L142 QuantifierPusher]: treesize reduction 17, result has 15.0 percent of original size [2021-04-16 06:46:04,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:04,742 INFO L142 QuantifierPusher]: treesize reduction 15, result has 16.7 percent of original size [2021-04-16 06:46:04,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:04,745 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-04-16 06:46:04,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:46:04,756 INFO L142 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-04-16 06:46:04,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:46:04,778 INFO L142 QuantifierPusher]: treesize reduction 12, result has 81.0 percent of original size [2021-04-16 06:46:04,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:46:04,815 INFO L142 QuantifierPusher]: treesize reduction 9, result has 82.7 percent of original size [2021-04-16 06:46:04,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:46:04,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.6 percent of original size [2021-04-16 06:46:04,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:46:04,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-04-16 06:46:04,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:46:04,887 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.5 percent of original size [2021-04-16 06:46:04,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:04,904 INFO L142 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-04-16 06:46:04,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:46:04,922 INFO L142 QuantifierPusher]: treesize reduction 4, result has 91.1 percent of original size [2021-04-16 06:46:04,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:04,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:04,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:04,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:04,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:04,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:04,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:05,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:05,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:46:05,016 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size [2021-04-16 06:46:05,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:05,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:05,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:46:05,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:05,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:05,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:05,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:05,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:05,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:05,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:05,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:05,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:05,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:05,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:05,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-04-16 06:46:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:05,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:05,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:05,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374331332] [2021-04-16 06:46:05,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:05,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:46:05,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485391356] [2021-04-16 06:46:05,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:46:05,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:05,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:46:05,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:46:05,141 INFO L87 Difference]: Start difference. First operand 594 states and 720 transitions. Second operand has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 22 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:06,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:06,502 INFO L93 Difference]: Finished difference Result 645 states and 780 transitions. [2021-04-16 06:46:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-04-16 06:46:06,503 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 22 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2021-04-16 06:46:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:06,505 INFO L225 Difference]: With dead ends: 645 [2021-04-16 06:46:06,505 INFO L226 Difference]: Without dead ends: 643 [2021-04-16 06:46:06,505 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 912.8ms TimeCoverageRelationStatistics Valid=252, Invalid=1728, Unknown=0, NotChecked=0, Total=1980 [2021-04-16 06:46:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-04-16 06:46:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 603. [2021-04-16 06:46:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 562 states have (on average 1.208185053380783) internal successors, (679), 577 states have internal predecessors, (679), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (26), 11 states have call predecessors, (26), 26 states have call successors, (26) [2021-04-16 06:46:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 732 transitions. [2021-04-16 06:46:06,702 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 732 transitions. Word has length 60 [2021-04-16 06:46:06,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:06,703 INFO L480 AbstractCegarLoop]: Abstraction has 603 states and 732 transitions. [2021-04-16 06:46:06,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 22 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:06,703 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 732 transitions. [2021-04-16 06:46:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-04-16 06:46:06,704 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:06,704 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:06,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-04-16 06:46:06,704 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:06,704 INFO L82 PathProgramCache]: Analyzing trace with hash 470069801, now seen corresponding path program 5 times [2021-04-16 06:46:06,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:06,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963603123] [2021-04-16 06:46:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:06,708 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:06,708 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:06,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:06,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:06,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:06,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:06,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:06,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:06,767 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:46:06,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:06,780 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-04-16 06:46:06,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:06,799 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:46:06,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:06,815 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:46:06,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:06,817 INFO L142 QuantifierPusher]: treesize reduction 46, result has 58.6 percent of original size [2021-04-16 06:46:06,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:46:06,835 INFO L142 QuantifierPusher]: treesize reduction 46, result has 58.6 percent of original size [2021-04-16 06:46:06,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:46:06,837 INFO L142 QuantifierPusher]: treesize reduction 22, result has 45.0 percent of original size [2021-04-16 06:46:06,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:46:06,847 INFO L142 QuantifierPusher]: treesize reduction 24, result has 46.7 percent of original size [2021-04-16 06:46:06,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:06,851 INFO L142 QuantifierPusher]: treesize reduction 46, result has 55.3 percent of original size [2021-04-16 06:46:06,851 INFO L147 QuantifierPusher]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-04-16 06:46:06,881 INFO L142 QuantifierPusher]: treesize reduction 45, result has 61.9 percent of original size [2021-04-16 06:46:06,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:46:06,916 INFO L142 QuantifierPusher]: treesize reduction 45, result has 61.2 percent of original size [2021-04-16 06:46:06,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:46:06,947 INFO L142 QuantifierPusher]: treesize reduction 22, result has 57.7 percent of original size [2021-04-16 06:46:06,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:46:06,953 INFO L142 QuantifierPusher]: treesize reduction 44, result has 50.6 percent of original size [2021-04-16 06:46:06,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:46:06,959 INFO L142 QuantifierPusher]: treesize reduction 43, result has 57.0 percent of original size [2021-04-16 06:46:06,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:46:06,985 INFO L142 QuantifierPusher]: treesize reduction 89, result has 42.6 percent of original size [2021-04-16 06:46:06,986 INFO L147 QuantifierPusher]: treesize reduction 7, result has 89.4 percent of original size 59 [2021-04-16 06:46:07,021 INFO L142 QuantifierPusher]: treesize reduction 88, result has 48.2 percent of original size [2021-04-16 06:46:07,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:46:07,070 INFO L142 QuantifierPusher]: treesize reduction 89, result has 51.1 percent of original size [2021-04-16 06:46:07,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:46:07,113 INFO L142 QuantifierPusher]: treesize reduction 88, result has 50.8 percent of original size [2021-04-16 06:46:07,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-04-16 06:46:07,156 INFO L142 QuantifierPusher]: treesize reduction 41, result has 59.8 percent of original size [2021-04-16 06:46:07,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:46:07,185 INFO L142 QuantifierPusher]: treesize reduction 43, result has 58.7 percent of original size [2021-04-16 06:46:07,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:46:07,221 INFO L142 QuantifierPusher]: treesize reduction 60, result has 66.3 percent of original size [2021-04-16 06:46:07,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-04-16 06:46:07,285 INFO L142 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-04-16 06:46:07,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:46:07,314 INFO L142 QuantifierPusher]: treesize reduction 23, result has 77.2 percent of original size [2021-04-16 06:46:07,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:46:07,347 INFO L142 QuantifierPusher]: treesize reduction 34, result has 69.9 percent of original size [2021-04-16 06:46:07,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:46:07,393 INFO L142 QuantifierPusher]: treesize reduction 36, result has 67.6 percent of original size [2021-04-16 06:46:07,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:46:07,413 INFO L142 QuantifierPusher]: treesize reduction 18, result has 77.8 percent of original size [2021-04-16 06:46:07,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:46:07,456 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.6 percent of original size [2021-04-16 06:46:07,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:46:07,495 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.4 percent of original size [2021-04-16 06:46:07,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:46:07,530 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:46:07,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:46:07,553 INFO L142 QuantifierPusher]: treesize reduction 24, result has 54.7 percent of original size [2021-04-16 06:46:07,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:46:07,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:46:07,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:46:07,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:07,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:07,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:07,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:07,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:07,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:07,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:07,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:07,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:07,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:07,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:07,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-04-16 06:46:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:07,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:07,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:07,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963603123] [2021-04-16 06:46:07,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:07,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:46:07,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398648247] [2021-04-16 06:46:07,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:46:07,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:07,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:46:07,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:46:07,704 INFO L87 Difference]: Start difference. First operand 603 states and 732 transitions. Second operand has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:10,705 INFO L93 Difference]: Finished difference Result 764 states and 923 transitions. [2021-04-16 06:46:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-04-16 06:46:10,705 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-04-16 06:46:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:10,707 INFO L225 Difference]: With dead ends: 764 [2021-04-16 06:46:10,707 INFO L226 Difference]: Without dead ends: 762 [2021-04-16 06:46:10,708 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 2434.4ms TimeCoverageRelationStatistics Valid=655, Invalid=5987, Unknown=0, NotChecked=0, Total=6642 [2021-04-16 06:46:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-04-16 06:46:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 668. [2021-04-16 06:46:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 620 states have (on average 1.2032258064516128) internal successors, (746), 637 states have internal predecessors, (746), 31 states have call successors, (31), 17 states have call predecessors, (31), 16 states have return successors, (30), 13 states have call predecessors, (30), 30 states have call successors, (30) [2021-04-16 06:46:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 807 transitions. [2021-04-16 06:46:10,925 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 807 transitions. Word has length 61 [2021-04-16 06:46:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:10,925 INFO L480 AbstractCegarLoop]: Abstraction has 668 states and 807 transitions. [2021-04-16 06:46:10,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 807 transitions. [2021-04-16 06:46:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-04-16 06:46:10,926 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:10,926 INFO L519 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:10,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-04-16 06:46:10,926 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:10,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1495534305, now seen corresponding path program 6 times [2021-04-16 06:46:10,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:10,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291599606] [2021-04-16 06:46:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:10,931 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:10,931 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:10,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:10,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:10,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:10,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:10,985 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:46:10,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:10,990 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:46:10,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:10,997 INFO L142 QuantifierPusher]: treesize reduction 28, result has 62.7 percent of original size [2021-04-16 06:46:10,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:46:11,017 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:46:11,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:11,028 INFO L142 QuantifierPusher]: treesize reduction 33, result has 45.9 percent of original size [2021-04-16 06:46:11,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:11,032 INFO L142 QuantifierPusher]: treesize reduction 62, result has 51.9 percent of original size [2021-04-16 06:46:11,033 INFO L147 QuantifierPusher]: treesize reduction 7, result has 89.6 percent of original size 60 [2021-04-16 06:46:11,052 INFO L142 QuantifierPusher]: treesize reduction 61, result has 57.6 percent of original size [2021-04-16 06:46:11,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-04-16 06:46:11,072 INFO L142 QuantifierPusher]: treesize reduction 61, result has 61.6 percent of original size [2021-04-16 06:46:11,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:46:11,107 INFO L142 QuantifierPusher]: treesize reduction 48, result has 58.6 percent of original size [2021-04-16 06:46:11,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:46:11,144 INFO L142 QuantifierPusher]: treesize reduction 45, result has 61.2 percent of original size [2021-04-16 06:46:11,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:46:11,180 INFO L142 QuantifierPusher]: treesize reduction 45, result has 60.9 percent of original size [2021-04-16 06:46:11,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:46:11,214 INFO L142 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size [2021-04-16 06:46:11,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:46:11,237 INFO L142 QuantifierPusher]: treesize reduction 40, result has 50.6 percent of original size [2021-04-16 06:46:11,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:11,262 INFO L142 QuantifierPusher]: treesize reduction 43, result has 59.0 percent of original size [2021-04-16 06:46:11,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:46:11,294 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-04-16 06:46:11,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:11,296 INFO L142 QuantifierPusher]: treesize reduction 47, result has 46.6 percent of original size [2021-04-16 06:46:11,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:11,321 INFO L142 QuantifierPusher]: treesize reduction 41, result has 72.1 percent of original size [2021-04-16 06:46:11,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-04-16 06:46:11,360 INFO L142 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-04-16 06:46:11,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:46:11,389 INFO L142 QuantifierPusher]: treesize reduction 26, result has 72.6 percent of original size [2021-04-16 06:46:11,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:46:11,429 INFO L142 QuantifierPusher]: treesize reduction 27, result has 75.5 percent of original size [2021-04-16 06:46:11,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-04-16 06:46:11,477 INFO L142 QuantifierPusher]: treesize reduction 27, result has 75.0 percent of original size [2021-04-16 06:46:11,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:46:11,513 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.8 percent of original size [2021-04-16 06:46:11,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:11,535 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-04-16 06:46:11,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:46:11,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-04-16 06:46:11,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:46:11,581 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:46:11,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:11,604 INFO L142 QuantifierPusher]: treesize reduction 32, result has 49.2 percent of original size [2021-04-16 06:46:11,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:46:11,634 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:46:11,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:11,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:11,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:11,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:11,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:11,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:11,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:11,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:11,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:11,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:11,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:11,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-04-16 06:46:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:11,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:11,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:11,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291599606] [2021-04-16 06:46:11,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:11,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:46:11,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396672757] [2021-04-16 06:46:11,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:46:11,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:11,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:46:11,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:46:11,744 INFO L87 Difference]: Start difference. First operand 668 states and 807 transitions. Second operand has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:14,182 INFO L93 Difference]: Finished difference Result 821 states and 987 transitions. [2021-04-16 06:46:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-04-16 06:46:14,182 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-04-16 06:46:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:14,185 INFO L225 Difference]: With dead ends: 821 [2021-04-16 06:46:14,185 INFO L226 Difference]: Without dead ends: 819 [2021-04-16 06:46:14,185 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1412 ImplicationChecksByTransitivity, 1707.8ms TimeCoverageRelationStatistics Valid=484, Invalid=4346, Unknown=0, NotChecked=0, Total=4830 [2021-04-16 06:46:14,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-04-16 06:46:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 677. [2021-04-16 06:46:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 628 states have (on average 1.2038216560509554) internal successors, (756), 646 states have internal predecessors, (756), 32 states have call successors, (32), 17 states have call predecessors, (32), 16 states have return successors, (31), 13 states have call predecessors, (31), 31 states have call successors, (31) [2021-04-16 06:46:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 819 transitions. [2021-04-16 06:46:14,411 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 819 transitions. Word has length 61 [2021-04-16 06:46:14,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:14,412 INFO L480 AbstractCegarLoop]: Abstraction has 677 states and 819 transitions. [2021-04-16 06:46:14,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:14,412 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 819 transitions. [2021-04-16 06:46:14,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-04-16 06:46:14,413 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:14,413 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:14,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-04-16 06:46:14,413 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:14,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1750933991, now seen corresponding path program 8 times [2021-04-16 06:46:14,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:14,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172500125] [2021-04-16 06:46:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:14,419 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:14,419 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:14,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:14,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:14,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:14,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:14,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:14,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:14,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:14,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:14,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:14,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:14,482 INFO L142 QuantifierPusher]: treesize reduction 22, result has 35.3 percent of original size [2021-04-16 06:46:14,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:46:14,485 INFO L142 QuantifierPusher]: treesize reduction 23, result has 51.1 percent of original size [2021-04-16 06:46:14,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:46:14,497 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:46:14,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:14,500 INFO L142 QuantifierPusher]: treesize reduction 15, result has 53.1 percent of original size [2021-04-16 06:46:14,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:46:14,517 INFO L142 QuantifierPusher]: treesize reduction 53, result has 51.4 percent of original size [2021-04-16 06:46:14,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:46:14,544 INFO L142 QuantifierPusher]: treesize reduction 53, result has 49.0 percent of original size [2021-04-16 06:46:14,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:46:14,580 INFO L142 QuantifierPusher]: treesize reduction 53, result has 47.5 percent of original size [2021-04-16 06:46:14,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:46:14,612 INFO L142 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-04-16 06:46:14,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:46:14,639 INFO L142 QuantifierPusher]: treesize reduction 61, result has 38.4 percent of original size [2021-04-16 06:46:14,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:46:14,665 INFO L142 QuantifierPusher]: treesize reduction 38, result has 72.1 percent of original size [2021-04-16 06:46:14,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:46:14,705 INFO L142 QuantifierPusher]: treesize reduction 68, result has 56.4 percent of original size [2021-04-16 06:46:14,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:46:14,744 INFO L142 QuantifierPusher]: treesize reduction 17, result has 82.3 percent of original size [2021-04-16 06:46:14,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:46:14,778 INFO L142 QuantifierPusher]: treesize reduction 17, result has 81.7 percent of original size [2021-04-16 06:46:14,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:46:14,817 INFO L142 QuantifierPusher]: treesize reduction 17, result has 81.1 percent of original size [2021-04-16 06:46:14,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:46:14,847 INFO L142 QuantifierPusher]: treesize reduction 17, result has 77.0 percent of original size [2021-04-16 06:46:14,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:46:14,874 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:46:14,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:46:14,889 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-04-16 06:46:14,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:14,906 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:46:14,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:46:14,928 INFO L142 QuantifierPusher]: treesize reduction 26, result has 68.3 percent of original size [2021-04-16 06:46:14,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:46:14,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:14,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:14,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:14,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:14,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:14,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:14,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:14,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:15,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:15,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:15,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-04-16 06:46:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:15,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:15,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-04-16 06:46:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:15,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:15,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:15,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172500125] [2021-04-16 06:46:15,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:15,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-04-16 06:46:15,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622555661] [2021-04-16 06:46:15,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-04-16 06:46:15,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:15,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-04-16 06:46:15,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:46:15,047 INFO L87 Difference]: Start difference. First operand 677 states and 819 transitions. Second operand has 27 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:46:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:17,230 INFO L93 Difference]: Finished difference Result 759 states and 917 transitions. [2021-04-16 06:46:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-04-16 06:46:17,231 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 63 [2021-04-16 06:46:17,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:17,233 INFO L225 Difference]: With dead ends: 759 [2021-04-16 06:46:17,233 INFO L226 Difference]: Without dead ends: 757 [2021-04-16 06:46:17,233 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1611.3ms TimeCoverageRelationStatistics Valid=361, Invalid=2291, Unknown=0, NotChecked=0, Total=2652 [2021-04-16 06:46:17,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2021-04-16 06:46:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 730. [2021-04-16 06:46:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 673 states have (on average 1.1961367013372957) internal successors, (805), 694 states have internal predecessors, (805), 39 states have call successors, (39), 18 states have call predecessors, (39), 17 states have return successors, (38), 17 states have call predecessors, (38), 38 states have call successors, (38) [2021-04-16 06:46:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 882 transitions. [2021-04-16 06:46:17,490 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 882 transitions. Word has length 63 [2021-04-16 06:46:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:17,490 INFO L480 AbstractCegarLoop]: Abstraction has 730 states and 882 transitions. [2021-04-16 06:46:17,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:46:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 882 transitions. [2021-04-16 06:46:17,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-04-16 06:46:17,491 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:17,491 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:17,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-04-16 06:46:17,491 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:17,491 INFO L82 PathProgramCache]: Analyzing trace with hash -184264233, now seen corresponding path program 16 times [2021-04-16 06:46:17,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:17,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051833649] [2021-04-16 06:46:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:17,495 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:17,496 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:17,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:17,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:17,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:17,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:17,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:17,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:17,541 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:46:17,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:46:17,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:46:17,576 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-04-16 06:46:17,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:46:17,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:46:17,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:46:17,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:46:17,629 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-04-16 06:46:17,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:46:17,652 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-04-16 06:46:17,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:17,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:17,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:17,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:17,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:17,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051833649] [2021-04-16 06:46:17,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:17,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:46:17,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731176227] [2021-04-16 06:46:17,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:46:17,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:17,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:46:17,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:46:17,683 INFO L87 Difference]: Start difference. First operand 730 states and 882 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:18,449 INFO L93 Difference]: Finished difference Result 1398 states and 1722 transitions. [2021-04-16 06:46:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:46:18,450 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-04-16 06:46:18,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:18,453 INFO L225 Difference]: With dead ends: 1398 [2021-04-16 06:46:18,453 INFO L226 Difference]: Without dead ends: 1203 [2021-04-16 06:46:18,453 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 253.7ms TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:46:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-04-16 06:46:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 979. [2021-04-16 06:46:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 922 states have (on average 1.20824295010846) internal successors, (1114), 943 states have internal predecessors, (1114), 39 states have call successors, (39), 18 states have call predecessors, (39), 17 states have return successors, (38), 17 states have call predecessors, (38), 38 states have call successors, (38) [2021-04-16 06:46:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1191 transitions. [2021-04-16 06:46:18,791 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1191 transitions. Word has length 61 [2021-04-16 06:46:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:18,791 INFO L480 AbstractCegarLoop]: Abstraction has 979 states and 1191 transitions. [2021-04-16 06:46:18,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1191 transitions. [2021-04-16 06:46:18,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-04-16 06:46:18,792 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:18,792 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:18,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-04-16 06:46:18,793 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:18,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:18,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1632684826, now seen corresponding path program 17 times [2021-04-16 06:46:18,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:18,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87508141] [2021-04-16 06:46:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:18,796 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:18,797 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:18,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:18,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:18,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:18,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:18,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:18,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:18,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:18,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:18,845 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:46:18,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:18,848 INFO L142 QuantifierPusher]: treesize reduction 23, result has 61.0 percent of original size [2021-04-16 06:46:18,849 INFO L147 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size 29 [2021-04-16 06:46:18,860 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-04-16 06:46:18,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:46:18,865 INFO L142 QuantifierPusher]: treesize reduction 22, result has 69.4 percent of original size [2021-04-16 06:46:18,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:46:18,870 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:46:18,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:18,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:18,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:46:18,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:18,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:46:18,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:18,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:46:18,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:18,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:46:18,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:18,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:46:18,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:18,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:46:18,943 INFO L142 QuantifierPusher]: treesize reduction 19, result has 44.1 percent of original size [2021-04-16 06:46:18,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:46:18,958 INFO L142 QuantifierPusher]: treesize reduction 15, result has 50.0 percent of original size [2021-04-16 06:46:18,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:46:18,977 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-04-16 06:46:18,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:19,001 INFO L142 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-04-16 06:46:19,001 INFO L147 QuantifierPusher]: treesize reduction 8, result has 82.2 percent of original size 37 [2021-04-16 06:46:19,025 INFO L142 QuantifierPusher]: treesize reduction 29, result has 68.1 percent of original size [2021-04-16 06:46:19,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:46:19,060 INFO L142 QuantifierPusher]: treesize reduction 29, result has 67.8 percent of original size [2021-04-16 06:46:19,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:46:19,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:46:19,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:46:19,108 INFO L142 QuantifierPusher]: treesize reduction 41, result has 48.1 percent of original size [2021-04-16 06:46:19,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:46:19,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:19,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:19,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:19,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:19,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:19,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:19,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:19,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:19,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:19,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:19,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:19,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87508141] [2021-04-16 06:46:19,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:19,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:46:19,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268469749] [2021-04-16 06:46:19,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:46:19,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:19,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:46:19,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:46:19,205 INFO L87 Difference]: Start difference. First operand 979 states and 1191 transitions. Second operand has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:21,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:21,478 INFO L93 Difference]: Finished difference Result 1247 states and 1519 transitions. [2021-04-16 06:46:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-04-16 06:46:21,479 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-04-16 06:46:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:21,482 INFO L225 Difference]: With dead ends: 1247 [2021-04-16 06:46:21,483 INFO L226 Difference]: Without dead ends: 1195 [2021-04-16 06:46:21,483 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 1508.6ms TimeCoverageRelationStatistics Valid=1053, Invalid=3917, Unknown=0, NotChecked=0, Total=4970 [2021-04-16 06:46:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2021-04-16 06:46:21,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 987. [2021-04-16 06:46:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 927 states have (on average 1.2017259978425028) internal successors, (1114), 950 states have internal predecessors, (1114), 41 states have call successors, (41), 19 states have call predecessors, (41), 18 states have return successors, (40), 17 states have call predecessors, (40), 40 states have call successors, (40) [2021-04-16 06:46:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1195 transitions. [2021-04-16 06:46:21,840 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1195 transitions. Word has length 61 [2021-04-16 06:46:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:21,840 INFO L480 AbstractCegarLoop]: Abstraction has 987 states and 1195 transitions. [2021-04-16 06:46:21,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1195 transitions. [2021-04-16 06:46:21,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-04-16 06:46:21,842 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:21,842 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:21,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-04-16 06:46:21,842 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:21,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1542934108, now seen corresponding path program 17 times [2021-04-16 06:46:21,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:21,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997677114] [2021-04-16 06:46:21,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:21,849 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:21,850 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:21,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:21,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:21,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:21,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:21,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:21,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:21,917 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-04-16 06:46:21,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:21,930 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-04-16 06:46:21,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:21,934 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:46:21,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:46:21,946 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:46:21,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:46:21,951 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:46:21,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:46:21,965 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:46:21,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:46:21,971 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:46:21,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:21,984 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:46:21,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:46:21,994 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:46:21,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:21,998 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:46:21,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:22,002 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:46:22,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:46:22,006 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:46:22,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:22,010 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:46:22,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:22,013 INFO L142 QuantifierPusher]: treesize reduction 18, result has 64.0 percent of original size [2021-04-16 06:46:22,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:46:22,033 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.5 percent of original size [2021-04-16 06:46:22,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:46:22,058 INFO L142 QuantifierPusher]: treesize reduction 26, result has 55.9 percent of original size [2021-04-16 06:46:22,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:22,079 INFO L142 QuantifierPusher]: treesize reduction 26, result has 55.9 percent of original size [2021-04-16 06:46:22,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:22,102 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:46:22,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:46:22,130 INFO L142 QuantifierPusher]: treesize reduction 32, result has 40.7 percent of original size [2021-04-16 06:46:22,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:46:22,155 INFO L142 QuantifierPusher]: treesize reduction 47, result has 54.8 percent of original size [2021-04-16 06:46:22,156 INFO L147 QuantifierPusher]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-04-16 06:46:22,191 INFO L142 QuantifierPusher]: treesize reduction 34, result has 66.7 percent of original size [2021-04-16 06:46:22,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:46:22,225 INFO L142 QuantifierPusher]: treesize reduction 34, result has 69.9 percent of original size [2021-04-16 06:46:22,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:46:22,269 INFO L142 QuantifierPusher]: treesize reduction 34, result has 69.1 percent of original size [2021-04-16 06:46:22,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:46:22,308 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:46:22,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:22,332 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:46:22,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:22,358 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.5 percent of original size [2021-04-16 06:46:22,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:46:22,387 INFO L142 QuantifierPusher]: treesize reduction 15, result has 83.0 percent of original size [2021-04-16 06:46:22,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:46:22,418 INFO L142 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-04-16 06:46:22,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:46:22,442 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:46:22,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:46:22,462 INFO L142 QuantifierPusher]: treesize reduction 19, result has 65.5 percent of original size [2021-04-16 06:46:22,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:22,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:22,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:22,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:22,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:22,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:22,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:22,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:22,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:22,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:22,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:22,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:22,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997677114] [2021-04-16 06:46:22,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:22,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-04-16 06:46:22,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754246137] [2021-04-16 06:46:22,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-04-16 06:46:22,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:22,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-04-16 06:46:22,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2021-04-16 06:46:22,585 INFO L87 Difference]: Start difference. First operand 987 states and 1195 transitions. Second operand has 29 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:25,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:25,240 INFO L93 Difference]: Finished difference Result 1121 states and 1353 transitions. [2021-04-16 06:46:25,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-04-16 06:46:25,241 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-04-16 06:46:25,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:25,244 INFO L225 Difference]: With dead ends: 1121 [2021-04-16 06:46:25,244 INFO L226 Difference]: Without dead ends: 1119 [2021-04-16 06:46:25,244 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1737.5ms TimeCoverageRelationStatistics Valid=610, Invalid=3812, Unknown=0, NotChecked=0, Total=4422 [2021-04-16 06:46:25,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-04-16 06:46:25,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1003. [2021-04-16 06:46:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 942 states have (on average 1.20276008492569) internal successors, (1133), 965 states have internal predecessors, (1133), 41 states have call successors, (41), 20 states have call predecessors, (41), 19 states have return successors, (40), 17 states have call predecessors, (40), 40 states have call successors, (40) [2021-04-16 06:46:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1214 transitions. [2021-04-16 06:46:25,606 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1214 transitions. Word has length 61 [2021-04-16 06:46:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:25,606 INFO L480 AbstractCegarLoop]: Abstraction has 1003 states and 1214 transitions. [2021-04-16 06:46:25,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1214 transitions. [2021-04-16 06:46:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-04-16 06:46:25,608 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:25,608 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:25,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-04-16 06:46:25,608 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:25,608 INFO L82 PathProgramCache]: Analyzing trace with hash 747738716, now seen corresponding path program 18 times [2021-04-16 06:46:25,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:25,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828795428] [2021-04-16 06:46:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:25,612 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:25,613 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:25,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:25,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:25,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:25,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:25,665 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:46:25,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:25,672 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:46:25,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:25,679 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:46:25,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:25,687 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:46:25,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:25,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:25,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:25,703 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:46:25,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:25,708 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-04-16 06:46:25,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:25,721 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-04-16 06:46:25,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:25,732 INFO L142 QuantifierPusher]: treesize reduction 74, result has 29.5 percent of original size [2021-04-16 06:46:25,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:46:25,759 INFO L142 QuantifierPusher]: treesize reduction 30, result has 56.5 percent of original size [2021-04-16 06:46:25,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:46:25,791 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.6 percent of original size [2021-04-16 06:46:25,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:46:25,824 INFO L142 QuantifierPusher]: treesize reduction 35, result has 54.5 percent of original size [2021-04-16 06:46:25,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:46:25,855 INFO L142 QuantifierPusher]: treesize reduction 35, result has 61.1 percent of original size [2021-04-16 06:46:25,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:46:25,891 INFO L142 QuantifierPusher]: treesize reduction 51, result has 59.8 percent of original size [2021-04-16 06:46:25,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:46:25,946 INFO L142 QuantifierPusher]: treesize reduction 48, result has 64.7 percent of original size [2021-04-16 06:46:25,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:46:26,001 INFO L142 QuantifierPusher]: treesize reduction 50, result has 63.0 percent of original size [2021-04-16 06:46:26,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-04-16 06:46:26,049 INFO L142 QuantifierPusher]: treesize reduction 35, result has 49.3 percent of original size [2021-04-16 06:46:26,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:46:26,079 INFO L142 QuantifierPusher]: treesize reduction 35, result has 48.5 percent of original size [2021-04-16 06:46:26,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:26,112 INFO L142 QuantifierPusher]: treesize reduction 34, result has 62.6 percent of original size [2021-04-16 06:46:26,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:46:26,142 INFO L142 QuantifierPusher]: treesize reduction 37, result has 67.0 percent of original size [2021-04-16 06:46:26,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:46:26,192 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:46:26,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:46:26,216 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:46:26,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:46:26,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:26,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:26,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:26,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:26,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:26,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:26,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:26,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:26,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:26,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:26,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:26,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828795428] [2021-04-16 06:46:26,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:26,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:46:26,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260898510] [2021-04-16 06:46:26,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:46:26,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:26,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:46:26,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:46:26,333 INFO L87 Difference]: Start difference. First operand 1003 states and 1214 transitions. Second operand has 28 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:29,270 INFO L93 Difference]: Finished difference Result 1194 states and 1444 transitions. [2021-04-16 06:46:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-04-16 06:46:29,271 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-04-16 06:46:29,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:29,273 INFO L225 Difference]: With dead ends: 1194 [2021-04-16 06:46:29,273 INFO L226 Difference]: Without dead ends: 1192 [2021-04-16 06:46:29,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 1605.3ms TimeCoverageRelationStatistics Valid=427, Invalid=3355, Unknown=0, NotChecked=0, Total=3782 [2021-04-16 06:46:29,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-04-16 06:46:29,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1009. [2021-04-16 06:46:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 948 states have (on average 1.2035864978902953) internal successors, (1141), 971 states have internal predecessors, (1141), 41 states have call successors, (41), 20 states have call predecessors, (41), 19 states have return successors, (40), 17 states have call predecessors, (40), 40 states have call successors, (40) [2021-04-16 06:46:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1222 transitions. [2021-04-16 06:46:29,628 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1222 transitions. Word has length 61 [2021-04-16 06:46:29,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:29,628 INFO L480 AbstractCegarLoop]: Abstraction has 1009 states and 1222 transitions. [2021-04-16 06:46:29,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1222 transitions. [2021-04-16 06:46:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-04-16 06:46:29,629 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:29,629 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:29,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-04-16 06:46:29,629 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:29,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1042853094, now seen corresponding path program 19 times [2021-04-16 06:46:29,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:29,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922034462] [2021-04-16 06:46:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:29,638 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:29,638 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:29,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:29,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:29,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:29,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:29,701 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-04-16 06:46:29,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:29,707 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:46:29,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:29,714 INFO L142 QuantifierPusher]: treesize reduction 47, result has 39.0 percent of original size [2021-04-16 06:46:29,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:46:29,732 INFO L142 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-04-16 06:46:29,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:29,750 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:46:29,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:29,762 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-04-16 06:46:29,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:46:29,767 INFO L142 QuantifierPusher]: treesize reduction 44, result has 42.9 percent of original size [2021-04-16 06:46:29,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:29,788 INFO L142 QuantifierPusher]: treesize reduction 49, result has 52.0 percent of original size [2021-04-16 06:46:29,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:46:29,818 INFO L142 QuantifierPusher]: treesize reduction 47, result has 52.5 percent of original size [2021-04-16 06:46:29,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:46:29,857 INFO L142 QuantifierPusher]: treesize reduction 42, result has 54.8 percent of original size [2021-04-16 06:46:29,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:46:29,887 INFO L142 QuantifierPusher]: treesize reduction 42, result has 60.7 percent of original size [2021-04-16 06:46:29,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:46:29,920 INFO L142 QuantifierPusher]: treesize reduction 69, result has 57.7 percent of original size [2021-04-16 06:46:29,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:46:29,970 INFO L142 QuantifierPusher]: treesize reduction 59, result has 64.7 percent of original size [2021-04-16 06:46:29,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-04-16 06:46:30,021 INFO L142 QuantifierPusher]: treesize reduction 61, result has 63.3 percent of original size [2021-04-16 06:46:30,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-04-16 06:46:30,064 INFO L142 QuantifierPusher]: treesize reduction 45, result has 52.6 percent of original size [2021-04-16 06:46:30,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:46:30,094 INFO L142 QuantifierPusher]: treesize reduction 46, result has 52.1 percent of original size [2021-04-16 06:46:30,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:46:30,127 INFO L142 QuantifierPusher]: treesize reduction 50, result has 69.9 percent of original size [2021-04-16 06:46:30,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-04-16 06:46:30,185 INFO L142 QuantifierPusher]: treesize reduction 41, result has 54.9 percent of original size [2021-04-16 06:46:30,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:46:30,187 INFO L142 QuantifierPusher]: treesize reduction 41, result has 54.4 percent of original size [2021-04-16 06:46:30,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:46:30,219 INFO L142 QuantifierPusher]: treesize reduction 41, result has 64.0 percent of original size [2021-04-16 06:46:30,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:46:30,255 INFO L142 QuantifierPusher]: treesize reduction 58, result has 63.1 percent of original size [2021-04-16 06:46:30,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-04-16 06:46:30,307 INFO L142 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-04-16 06:46:30,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:46:30,332 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:46:30,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:46:30,354 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:46:30,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:46:30,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:30,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:30,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:30,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:30,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:30,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:30,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:30,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:30,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:30,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:30,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:30,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922034462] [2021-04-16 06:46:30,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:30,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-04-16 06:46:30,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623507778] [2021-04-16 06:46:30,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-04-16 06:46:30,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:30,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-04-16 06:46:30,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2021-04-16 06:46:30,473 INFO L87 Difference]: Start difference. First operand 1009 states and 1222 transitions. Second operand has 29 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:33,886 INFO L93 Difference]: Finished difference Result 1224 states and 1480 transitions. [2021-04-16 06:46:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-04-16 06:46:33,887 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-04-16 06:46:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:33,889 INFO L225 Difference]: With dead ends: 1224 [2021-04-16 06:46:33,889 INFO L226 Difference]: Without dead ends: 1222 [2021-04-16 06:46:33,890 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1950.0ms TimeCoverageRelationStatistics Valid=458, Invalid=4512, Unknown=0, NotChecked=0, Total=4970 [2021-04-16 06:46:33,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-04-16 06:46:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1010. [2021-04-16 06:46:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 947 states have (on average 1.20168954593453) internal successors, (1138), 971 states have internal predecessors, (1138), 42 states have call successors, (42), 21 states have call predecessors, (42), 20 states have return successors, (41), 17 states have call predecessors, (41), 41 states have call successors, (41) [2021-04-16 06:46:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1221 transitions. [2021-04-16 06:46:34,290 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1221 transitions. Word has length 61 [2021-04-16 06:46:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:34,290 INFO L480 AbstractCegarLoop]: Abstraction has 1010 states and 1221 transitions. [2021-04-16 06:46:34,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1221 transitions. [2021-04-16 06:46:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-04-16 06:46:34,291 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:34,291 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:34,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-04-16 06:46:34,292 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:34,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:34,292 INFO L82 PathProgramCache]: Analyzing trace with hash -171237983, now seen corresponding path program 5 times [2021-04-16 06:46:34,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:34,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805148634] [2021-04-16 06:46:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:34,299 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:34,300 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:34,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:34,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:34,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:34,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:34,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:34,337 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:46:34,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:46:34,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:46:34,363 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-04-16 06:46:34,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:46:34,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:46:34,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:46:34,403 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-04-16 06:46:34,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:46:34,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:34,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:34,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:34,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-04-16 06:46:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:34,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:34,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-04-16 06:46:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:34,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:34,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-04-16 06:46:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:34,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:34,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:34,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805148634] [2021-04-16 06:46:34,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:34,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:46:34,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92585399] [2021-04-16 06:46:34,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:46:34,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:34,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:46:34,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:46:34,463 INFO L87 Difference]: Start difference. First operand 1010 states and 1221 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 06:46:35,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:35,240 INFO L93 Difference]: Finished difference Result 1061 states and 1280 transitions. [2021-04-16 06:46:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:46:35,240 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 65 [2021-04-16 06:46:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:35,243 INFO L225 Difference]: With dead ends: 1061 [2021-04-16 06:46:35,243 INFO L226 Difference]: Without dead ends: 894 [2021-04-16 06:46:35,243 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 232.0ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:46:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2021-04-16 06:46:35,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 825. [2021-04-16 06:46:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 787 states have (on average 1.1918678526048285) internal successors, (938), 801 states have internal predecessors, (938), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (23), 10 states have call predecessors, (23), 23 states have call successors, (23) [2021-04-16 06:46:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 986 transitions. [2021-04-16 06:46:35,527 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 986 transitions. Word has length 65 [2021-04-16 06:46:35,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:35,527 INFO L480 AbstractCegarLoop]: Abstraction has 825 states and 986 transitions. [2021-04-16 06:46:35,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 06:46:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 986 transitions. [2021-04-16 06:46:35,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-04-16 06:46:35,528 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:35,528 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:35,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-04-16 06:46:35,528 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:35,528 INFO L82 PathProgramCache]: Analyzing trace with hash 972338910, now seen corresponding path program 9 times [2021-04-16 06:46:35,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:35,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238774285] [2021-04-16 06:46:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:35,532 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:35,533 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:35,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:35,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:35,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:35,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:35,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:35,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:35,590 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:46:35,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:35,594 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-04-16 06:46:35,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:35,606 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-04-16 06:46:35,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:35,607 INFO L142 QuantifierPusher]: treesize reduction 20, result has 20.0 percent of original size [2021-04-16 06:46:35,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:35,611 INFO L142 QuantifierPusher]: treesize reduction 21, result has 19.2 percent of original size [2021-04-16 06:46:35,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:35,618 INFO L142 QuantifierPusher]: treesize reduction 21, result has 19.2 percent of original size [2021-04-16 06:46:35,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:35,618 INFO L142 QuantifierPusher]: treesize reduction 21, result has 19.2 percent of original size [2021-04-16 06:46:35,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:35,619 INFO L142 QuantifierPusher]: treesize reduction 21, result has 19.2 percent of original size [2021-04-16 06:46:35,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:35,626 INFO L142 QuantifierPusher]: treesize reduction 21, result has 19.2 percent of original size [2021-04-16 06:46:35,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:35,634 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:46:35,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:35,641 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:46:35,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:35,650 INFO L142 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-04-16 06:46:35,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:46:35,667 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-04-16 06:46:35,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:46:35,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:46:35,695 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-04-16 06:46:35,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:35,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:35,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:35,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:35,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:35,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:35,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:35,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:35,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-04-16 06:46:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:35,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:35,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:35,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238774285] [2021-04-16 06:46:35,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:35,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-04-16 06:46:35,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376966741] [2021-04-16 06:46:35,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-16 06:46:35,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:35,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-16 06:46:35,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:46:35,819 INFO L87 Difference]: Start difference. First operand 825 states and 986 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:37,972 INFO L93 Difference]: Finished difference Result 1131 states and 1356 transitions. [2021-04-16 06:46:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-04-16 06:46:37,972 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2021-04-16 06:46:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:37,975 INFO L225 Difference]: With dead ends: 1131 [2021-04-16 06:46:37,975 INFO L226 Difference]: Without dead ends: 1129 [2021-04-16 06:46:37,976 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 984.8ms TimeCoverageRelationStatistics Valid=360, Invalid=3800, Unknown=0, NotChecked=0, Total=4160 [2021-04-16 06:46:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-04-16 06:46:38,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 866. [2021-04-16 06:46:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 821 states have (on average 1.1875761266747868) internal successors, (975), 840 states have internal predecessors, (975), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 11 states have call predecessors, (29), 29 states have call successors, (29) [2021-04-16 06:46:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1035 transitions. [2021-04-16 06:46:38,296 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1035 transitions. Word has length 63 [2021-04-16 06:46:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:38,296 INFO L480 AbstractCegarLoop]: Abstraction has 866 states and 1035 transitions. [2021-04-16 06:46:38,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1035 transitions. [2021-04-16 06:46:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-04-16 06:46:38,297 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:38,297 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:38,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-04-16 06:46:38,297 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:38,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:38,298 INFO L82 PathProgramCache]: Analyzing trace with hash 736626974, now seen corresponding path program 10 times [2021-04-16 06:46:38,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:38,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913251239] [2021-04-16 06:46:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:38,301 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:38,302 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:38,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:38,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:38,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:38,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:38,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:38,363 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-04-16 06:46:38,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:46:38,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 06:46:38,376 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-04-16 06:46:38,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:38,379 INFO L142 QuantifierPusher]: treesize reduction 29, result has 14.7 percent of original size [2021-04-16 06:46:38,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:38,382 INFO L142 QuantifierPusher]: treesize reduction 30, result has 14.3 percent of original size [2021-04-16 06:46:38,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:38,387 INFO L142 QuantifierPusher]: treesize reduction 18, result has 53.8 percent of original size [2021-04-16 06:46:38,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:38,401 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 06:46:38,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:38,415 INFO L142 QuantifierPusher]: treesize reduction 17, result has 68.5 percent of original size [2021-04-16 06:46:38,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:46:38,440 INFO L142 QuantifierPusher]: treesize reduction 11, result has 76.6 percent of original size [2021-04-16 06:46:38,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:38,463 INFO L142 QuantifierPusher]: treesize reduction 5, result has 84.4 percent of original size [2021-04-16 06:46:38,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:46:38,482 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size [2021-04-16 06:46:38,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:46:38,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:38,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:46:38,531 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-04-16 06:46:38,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:38,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:46:38,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:38,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:38,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:38,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:38,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:38,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:38,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-04-16 06:46:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:38,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:38,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:38,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913251239] [2021-04-16 06:46:38,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:38,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:46:38,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054549983] [2021-04-16 06:46:38,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:46:38,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:38,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:46:38,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:46:38,649 INFO L87 Difference]: Start difference. First operand 866 states and 1035 transitions. Second operand has 21 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:40,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:40,212 INFO L93 Difference]: Finished difference Result 917 states and 1091 transitions. [2021-04-16 06:46:40,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:46:40,213 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2021-04-16 06:46:40,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:40,215 INFO L225 Difference]: With dead ends: 917 [2021-04-16 06:46:40,215 INFO L226 Difference]: Without dead ends: 915 [2021-04-16 06:46:40,215 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 740.3ms TimeCoverageRelationStatistics Valid=187, Invalid=1373, Unknown=0, NotChecked=0, Total=1560 [2021-04-16 06:46:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-04-16 06:46:40,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 879. [2021-04-16 06:46:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 833 states have (on average 1.1884753901560625) internal successors, (990), 852 states have internal predecessors, (990), 31 states have call successors, (31), 15 states have call predecessors, (31), 14 states have return successors, (29), 11 states have call predecessors, (29), 29 states have call successors, (29) [2021-04-16 06:46:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1050 transitions. [2021-04-16 06:46:40,535 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1050 transitions. Word has length 63 [2021-04-16 06:46:40,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:40,535 INFO L480 AbstractCegarLoop]: Abstraction has 879 states and 1050 transitions. [2021-04-16 06:46:40,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1050 transitions. [2021-04-16 06:46:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-04-16 06:46:40,536 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:40,536 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:40,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-04-16 06:46:40,537 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:40,537 INFO L82 PathProgramCache]: Analyzing trace with hash -578416814, now seen corresponding path program 11 times [2021-04-16 06:46:40,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:40,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415375829] [2021-04-16 06:46:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:40,542 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:40,543 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:40,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:40,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:40,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:40,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:40,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:40,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:40,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:40,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:40,620 INFO L142 QuantifierPusher]: treesize reduction 22, result has 72.2 percent of original size [2021-04-16 06:46:40,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:46:40,639 INFO L142 QuantifierPusher]: treesize reduction 25, result has 39.0 percent of original size [2021-04-16 06:46:40,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:46:40,654 INFO L142 QuantifierPusher]: treesize reduction 30, result has 9.1 percent of original size [2021-04-16 06:46:40,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:40,661 INFO L142 QuantifierPusher]: treesize reduction 45, result has 21.1 percent of original size [2021-04-16 06:46:40,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:46:40,665 INFO L142 QuantifierPusher]: treesize reduction 54, result has 32.5 percent of original size [2021-04-16 06:46:40,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:40,682 INFO L142 QuantifierPusher]: treesize reduction 39, result has 15.2 percent of original size [2021-04-16 06:46:40,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:40,686 INFO L142 QuantifierPusher]: treesize reduction 53, result has 29.3 percent of original size [2021-04-16 06:46:40,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:46:40,691 INFO L142 QuantifierPusher]: treesize reduction 40, result has 52.4 percent of original size [2021-04-16 06:46:40,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:46:40,714 INFO L142 QuantifierPusher]: treesize reduction 40, result has 60.4 percent of original size [2021-04-16 06:46:40,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:46:40,747 INFO L142 QuantifierPusher]: treesize reduction 30, result has 68.8 percent of original size [2021-04-16 06:46:40,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:46:40,776 INFO L142 QuantifierPusher]: treesize reduction 37, result has 52.6 percent of original size [2021-04-16 06:46:40,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:40,798 INFO L142 QuantifierPusher]: treesize reduction 37, result has 53.2 percent of original size [2021-04-16 06:46:40,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:46:40,822 INFO L142 QuantifierPusher]: treesize reduction 40, result has 58.3 percent of original size [2021-04-16 06:46:40,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:46:40,852 INFO L142 QuantifierPusher]: treesize reduction 37, result has 48.6 percent of original size [2021-04-16 06:46:40,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:46:40,868 INFO L142 QuantifierPusher]: treesize reduction 36, result has 49.3 percent of original size [2021-04-16 06:46:40,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:46:40,891 INFO L142 QuantifierPusher]: treesize reduction 21, result has 76.1 percent of original size [2021-04-16 06:46:40,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:46:40,921 INFO L142 QuantifierPusher]: treesize reduction 34, result has 69.4 percent of original size [2021-04-16 06:46:40,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:46:40,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:46:40,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:40,986 INFO L142 QuantifierPusher]: treesize reduction 24, result has 56.4 percent of original size [2021-04-16 06:46:40,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:46:41,011 INFO L142 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-04-16 06:46:41,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:46:41,041 INFO L142 QuantifierPusher]: treesize reduction 24, result has 56.4 percent of original size [2021-04-16 06:46:41,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:46:41,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:46:41,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:41,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:41,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:41,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:41,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:41,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:41,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:41,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:41,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:41,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:41,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:41,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:41,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-04-16 06:46:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:41,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:41,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:41,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415375829] [2021-04-16 06:46:41,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:41,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-04-16 06:46:41,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290737918] [2021-04-16 06:46:41,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-04-16 06:46:41,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:41,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-04-16 06:46:41,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:46:41,144 INFO L87 Difference]: Start difference. First operand 879 states and 1050 transitions. Second operand has 26 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:42,689 INFO L93 Difference]: Finished difference Result 943 states and 1122 transitions. [2021-04-16 06:46:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-04-16 06:46:42,689 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2021-04-16 06:46:42,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:42,692 INFO L225 Difference]: With dead ends: 943 [2021-04-16 06:46:42,692 INFO L226 Difference]: Without dead ends: 941 [2021-04-16 06:46:42,692 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 852.5ms TimeCoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2021-04-16 06:46:42,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-04-16 06:46:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 867. [2021-04-16 06:46:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 821 states have (on average 1.1887941534713764) internal successors, (976), 840 states have internal predecessors, (976), 31 states have call successors, (31), 15 states have call predecessors, (31), 14 states have return successors, (29), 11 states have call predecessors, (29), 29 states have call successors, (29) [2021-04-16 06:46:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1036 transitions. [2021-04-16 06:46:43,013 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1036 transitions. Word has length 63 [2021-04-16 06:46:43,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:43,013 INFO L480 AbstractCegarLoop]: Abstraction has 867 states and 1036 transitions. [2021-04-16 06:46:43,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:43,013 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1036 transitions. [2021-04-16 06:46:43,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-04-16 06:46:43,014 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:43,014 INFO L519 BasicCegarLoop]: trace histogram [8, 6, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:43,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-04-16 06:46:43,014 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:43,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:43,014 INFO L82 PathProgramCache]: Analyzing trace with hash -645721556, now seen corresponding path program 7 times [2021-04-16 06:46:43,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:43,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971595838] [2021-04-16 06:46:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:43,020 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:43,021 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:43,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:43,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:43,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:43,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:43,079 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:46:43,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:46:43,094 INFO L142 QuantifierPusher]: treesize reduction 22, result has 60.7 percent of original size [2021-04-16 06:46:43,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:46:43,111 INFO L142 QuantifierPusher]: treesize reduction 51, result has 49.5 percent of original size [2021-04-16 06:46:43,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:46:43,130 INFO L142 QuantifierPusher]: treesize reduction 29, result has 9.4 percent of original size [2021-04-16 06:46:43,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:43,137 INFO L142 QuantifierPusher]: treesize reduction 40, result has 14.9 percent of original size [2021-04-16 06:46:43,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:43,141 INFO L142 QuantifierPusher]: treesize reduction 42, result has 48.1 percent of original size [2021-04-16 06:46:43,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:46:43,147 INFO L142 QuantifierPusher]: treesize reduction 43, result has 52.7 percent of original size [2021-04-16 06:46:43,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:46:43,172 INFO L142 QuantifierPusher]: treesize reduction 45, result has 52.1 percent of original size [2021-04-16 06:46:43,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:46:43,199 INFO L142 QuantifierPusher]: treesize reduction 45, result has 55.0 percent of original size [2021-04-16 06:46:43,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:46:43,210 INFO L142 QuantifierPusher]: treesize reduction 45, result has 60.5 percent of original size [2021-04-16 06:46:43,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:46:43,252 INFO L142 QuantifierPusher]: treesize reduction 72, result has 55.0 percent of original size [2021-04-16 06:46:43,253 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.9 percent of original size 80 [2021-04-16 06:46:43,298 INFO L142 QuantifierPusher]: treesize reduction 70, result has 60.0 percent of original size [2021-04-16 06:46:43,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-04-16 06:46:43,363 INFO L142 QuantifierPusher]: treesize reduction 70, result has 59.8 percent of original size [2021-04-16 06:46:43,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-04-16 06:46:43,420 INFO L142 QuantifierPusher]: treesize reduction 41, result has 54.4 percent of original size [2021-04-16 06:46:43,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:46:43,451 INFO L142 QuantifierPusher]: treesize reduction 43, result has 53.3 percent of original size [2021-04-16 06:46:43,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:46:43,480 INFO L142 QuantifierPusher]: treesize reduction 60, result has 63.9 percent of original size [2021-04-16 06:46:43,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-04-16 06:46:43,530 INFO L142 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-04-16 06:46:43,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:46:43,558 INFO L142 QuantifierPusher]: treesize reduction 26, result has 72.6 percent of original size [2021-04-16 06:46:43,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:46:43,601 INFO L142 QuantifierPusher]: treesize reduction 27, result has 75.5 percent of original size [2021-04-16 06:46:43,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-04-16 06:46:43,659 INFO L142 QuantifierPusher]: treesize reduction 27, result has 75.0 percent of original size [2021-04-16 06:46:43,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:46:43,698 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.8 percent of original size [2021-04-16 06:46:43,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:43,723 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-04-16 06:46:43,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:46:43,749 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-04-16 06:46:43,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:46:43,772 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:46:43,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:46:43,795 INFO L142 QuantifierPusher]: treesize reduction 32, result has 49.2 percent of original size [2021-04-16 06:46:43,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:46:43,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:46:43,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:43,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:43,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:43,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:43,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:43,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:43,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:43,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:43,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:43,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:43,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:43,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:43,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-04-16 06:46:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:43,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:43,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:43,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971595838] [2021-04-16 06:46:43,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:43,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-04-16 06:46:43,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226495633] [2021-04-16 06:46:43,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-04-16 06:46:43,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:43,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-04-16 06:46:43,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:46:43,938 INFO L87 Difference]: Start difference. First operand 867 states and 1036 transitions. Second operand has 30 states, 29 states have (on average 2.0) internal successors, (58), 28 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:46,259 INFO L93 Difference]: Finished difference Result 916 states and 1091 transitions. [2021-04-16 06:46:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-04-16 06:46:46,260 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0) internal successors, (58), 28 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2021-04-16 06:46:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:46,262 INFO L225 Difference]: With dead ends: 916 [2021-04-16 06:46:46,262 INFO L226 Difference]: Without dead ends: 914 [2021-04-16 06:46:46,263 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 1730.1ms TimeCoverageRelationStatistics Valid=387, Invalid=3153, Unknown=0, NotChecked=0, Total=3540 [2021-04-16 06:46:46,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-04-16 06:46:46,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 809. [2021-04-16 06:46:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 765 states have (on average 1.1908496732026144) internal successors, (911), 783 states have internal predecessors, (911), 29 states have call successors, (29), 15 states have call predecessors, (29), 14 states have return successors, (27), 10 states have call predecessors, (27), 27 states have call successors, (27) [2021-04-16 06:46:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 967 transitions. [2021-04-16 06:46:46,565 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 967 transitions. Word has length 64 [2021-04-16 06:46:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:46,565 INFO L480 AbstractCegarLoop]: Abstraction has 809 states and 967 transitions. [2021-04-16 06:46:46,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 2.0) internal successors, (58), 28 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:46:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 967 transitions. [2021-04-16 06:46:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-04-16 06:46:46,566 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:46,566 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:46,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-04-16 06:46:46,566 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:46,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:46,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1217741736, now seen corresponding path program 6 times [2021-04-16 06:46:46,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:46,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861091641] [2021-04-16 06:46:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:46,570 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:46,571 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:46,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:46,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:46,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:46,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:46,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:46,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:46,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:46,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:46,631 INFO L142 QuantifierPusher]: treesize reduction 53, result has 23.2 percent of original size [2021-04-16 06:46:46,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:46:46,645 INFO L142 QuantifierPusher]: treesize reduction 26, result has 38.1 percent of original size [2021-04-16 06:46:46,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:46:46,661 INFO L142 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size [2021-04-16 06:46:46,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:46,669 INFO L142 QuantifierPusher]: treesize reduction 32, result has 17.9 percent of original size [2021-04-16 06:46:46,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:46,673 INFO L142 QuantifierPusher]: treesize reduction 45, result has 26.2 percent of original size [2021-04-16 06:46:46,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:46:46,678 INFO L142 QuantifierPusher]: treesize reduction 81, result has 40.9 percent of original size [2021-04-16 06:46:46,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:46:46,702 INFO L142 QuantifierPusher]: treesize reduction 93, result has 26.8 percent of original size [2021-04-16 06:46:46,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:46:46,707 INFO L142 QuantifierPusher]: treesize reduction 43, result has 30.6 percent of original size [2021-04-16 06:46:46,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:46:46,713 INFO L142 QuantifierPusher]: treesize reduction 23, result has 61.7 percent of original size [2021-04-16 06:46:46,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:46:46,733 INFO L142 QuantifierPusher]: treesize reduction 23, result has 78.3 percent of original size [2021-04-16 06:46:46,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-04-16 06:46:46,764 INFO L142 QuantifierPusher]: treesize reduction 23, result has 78.1 percent of original size [2021-04-16 06:46:46,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:46:46,793 INFO L142 QuantifierPusher]: treesize reduction 11, result has 71.8 percent of original size [2021-04-16 06:46:46,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:46,814 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:46:46,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:46,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:46:46,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:46,854 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:46:46,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:46:46,870 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-04-16 06:46:46,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:46,888 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:46:46,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:46:46,910 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:46:46,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:46,934 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:46:46,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:46:46,935 INFO L142 QuantifierPusher]: treesize reduction 25, result has 69.1 percent of original size [2021-04-16 06:46:46,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:46:46,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:46,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:46,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:46,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:46,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:46,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:47,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:47,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:47,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:47,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:47,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:47,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-04-16 06:46:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:47,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:47,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:47,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-04-16 06:46:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:47,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:47,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:47,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861091641] [2021-04-16 06:46:47,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:47,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:46:47,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373819822] [2021-04-16 06:46:47,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:46:47,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:47,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:46:47,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:46:47,042 INFO L87 Difference]: Start difference. First operand 809 states and 967 transitions. Second operand has 24 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:46:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:48,392 INFO L93 Difference]: Finished difference Result 856 states and 1022 transitions. [2021-04-16 06:46:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-04-16 06:46:48,393 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 65 [2021-04-16 06:46:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:48,395 INFO L225 Difference]: With dead ends: 856 [2021-04-16 06:46:48,395 INFO L226 Difference]: Without dead ends: 854 [2021-04-16 06:46:48,395 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 760.6ms TimeCoverageRelationStatistics Valid=209, Invalid=1351, Unknown=0, NotChecked=0, Total=1560 [2021-04-16 06:46:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-04-16 06:46:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 844. [2021-04-16 06:46:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 792 states have (on average 1.1856060606060606) internal successors, (939), 814 states have internal predecessors, (939), 36 states have call successors, (36), 16 states have call predecessors, (36), 15 states have return successors, (34), 13 states have call predecessors, (34), 34 states have call successors, (34) [2021-04-16 06:46:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1009 transitions. [2021-04-16 06:46:48,732 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1009 transitions. Word has length 65 [2021-04-16 06:46:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:48,732 INFO L480 AbstractCegarLoop]: Abstraction has 844 states and 1009 transitions. [2021-04-16 06:46:48,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:46:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1009 transitions. [2021-04-16 06:46:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-04-16 06:46:48,734 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:48,734 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:48,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-04-16 06:46:48,734 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:48,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:48,734 INFO L82 PathProgramCache]: Analyzing trace with hash 775255317, now seen corresponding path program 18 times [2021-04-16 06:46:48,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:48,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370546328] [2021-04-16 06:46:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:48,738 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:48,738 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:48,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:48,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:48,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:48,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:48,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:48,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:48,863 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:46:48,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:46:48,878 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-04-16 06:46:48,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:48,882 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:46:48,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:48,912 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:46:48,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:48,918 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:46:48,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:48,933 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:46:48,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:48,940 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:46:48,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:48,970 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:46:48,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:48,978 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:46:48,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:46:48,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:48,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:49,005 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:46:49,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:49,009 INFO L142 QuantifierPusher]: treesize reduction 36, result has 59.1 percent of original size [2021-04-16 06:46:49,009 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.5 percent of original size 45 [2021-04-16 06:46:49,036 INFO L142 QuantifierPusher]: treesize reduction 35, result has 65.0 percent of original size [2021-04-16 06:46:49,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:46:49,075 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.9 percent of original size [2021-04-16 06:46:49,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:46:49,127 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.3 percent of original size [2021-04-16 06:46:49,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:46:49,169 INFO L142 QuantifierPusher]: treesize reduction 13, result has 77.6 percent of original size [2021-04-16 06:46:49,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:46:49,194 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.6 percent of original size [2021-04-16 06:46:49,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:46:49,216 INFO L142 QuantifierPusher]: treesize reduction 21, result has 76.1 percent of original size [2021-04-16 06:46:49,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:46:49,256 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:46:49,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:49,280 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:46:49,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:49,305 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.9 percent of original size [2021-04-16 06:46:49,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:46:49,335 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:46:49,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:49,336 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:46:49,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:49,365 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.9 percent of original size [2021-04-16 06:46:49,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:46:49,398 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:46:49,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:49,399 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:46:49,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:49,430 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.2 percent of original size [2021-04-16 06:46:49,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:46:49,471 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.2 percent of original size [2021-04-16 06:46:49,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:46:49,507 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:46:49,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:49,542 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:46:49,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:46:49,565 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-04-16 06:46:49,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:49,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:49,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:49,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:49,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:49,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:49,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:49,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:49,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:49,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:49,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:49,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:49,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370546328] [2021-04-16 06:46:49,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:49,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:46:49,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506574728] [2021-04-16 06:46:49,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:46:49,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:49,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:46:49,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:46:49,684 INFO L87 Difference]: Start difference. First operand 844 states and 1009 transitions. Second operand has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:51,505 INFO L93 Difference]: Finished difference Result 964 states and 1153 transitions. [2021-04-16 06:46:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-04-16 06:46:51,506 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-04-16 06:46:51,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:51,508 INFO L225 Difference]: With dead ends: 964 [2021-04-16 06:46:51,508 INFO L226 Difference]: Without dead ends: 962 [2021-04-16 06:46:51,508 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1433.2ms TimeCoverageRelationStatistics Valid=490, Invalid=2266, Unknown=0, NotChecked=0, Total=2756 [2021-04-16 06:46:51,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-04-16 06:46:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 876. [2021-04-16 06:46:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 822 states have (on average 1.1873479318734794) internal successors, (976), 845 states have internal predecessors, (976), 37 states have call successors, (37), 17 states have call predecessors, (37), 16 states have return successors, (35), 13 states have call predecessors, (35), 35 states have call successors, (35) [2021-04-16 06:46:51,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1048 transitions. [2021-04-16 06:46:51,864 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1048 transitions. Word has length 63 [2021-04-16 06:46:51,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:51,864 INFO L480 AbstractCegarLoop]: Abstraction has 876 states and 1048 transitions. [2021-04-16 06:46:51,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:51,865 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1048 transitions. [2021-04-16 06:46:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-04-16 06:46:51,866 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:51,866 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:51,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-04-16 06:46:51,866 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:51,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1598093483, now seen corresponding path program 19 times [2021-04-16 06:46:51,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:51,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134751491] [2021-04-16 06:46:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:51,870 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:51,871 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:51,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:51,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:51,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:51,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:51,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:51,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:51,932 INFO L142 QuantifierPusher]: treesize reduction 13, result has 72.3 percent of original size [2021-04-16 06:46:51,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:46:51,946 INFO L142 QuantifierPusher]: treesize reduction 13, result has 66.7 percent of original size [2021-04-16 06:46:51,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:51,951 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:46:51,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:51,964 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:46:51,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:51,970 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:46:51,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:51,986 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:46:51,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:51,993 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:46:51,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:52,010 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:46:52,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:52,018 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:46:52,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:46:52,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:52,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:52,034 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:46:52,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:52,038 INFO L142 QuantifierPusher]: treesize reduction 36, result has 59.1 percent of original size [2021-04-16 06:46:52,038 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.5 percent of original size 45 [2021-04-16 06:46:52,063 INFO L142 QuantifierPusher]: treesize reduction 35, result has 65.0 percent of original size [2021-04-16 06:46:52,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:46:52,108 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.9 percent of original size [2021-04-16 06:46:52,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:46:52,161 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.3 percent of original size [2021-04-16 06:46:52,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:46:52,207 INFO L142 QuantifierPusher]: treesize reduction 13, result has 77.6 percent of original size [2021-04-16 06:46:52,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:46:52,235 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.6 percent of original size [2021-04-16 06:46:52,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:46:52,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.3 percent of original size [2021-04-16 06:46:52,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:46:52,290 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:46:52,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:46:52,291 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:46:52,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:46:52,321 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.4 percent of original size [2021-04-16 06:46:52,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:46:52,370 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:46:52,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:52,386 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:46:52,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:52,415 INFO L142 QuantifierPusher]: treesize reduction 20, result has 81.3 percent of original size [2021-04-16 06:46:52,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:46:52,453 INFO L142 QuantifierPusher]: treesize reduction 15, result has 85.3 percent of original size [2021-04-16 06:46:52,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:46:52,493 INFO L142 QuantifierPusher]: treesize reduction 14, result has 79.1 percent of original size [2021-04-16 06:46:52,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:46:52,529 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:46:52,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:52,562 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:46:52,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:52,595 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:46:52,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:46:52,618 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:46:52,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:46:52,637 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-04-16 06:46:52,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:46:52,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:52,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:52,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:52,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:52,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:52,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:52,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:52,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:52,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:52,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:52,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:52,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134751491] [2021-04-16 06:46:52,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:52,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:46:52,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743700745] [2021-04-16 06:46:52,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:46:52,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:52,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:46:52,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:46:52,776 INFO L87 Difference]: Start difference. First operand 876 states and 1048 transitions. Second operand has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:54,863 INFO L93 Difference]: Finished difference Result 981 states and 1172 transitions. [2021-04-16 06:46:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-04-16 06:46:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-04-16 06:46:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:54,869 INFO L225 Difference]: With dead ends: 981 [2021-04-16 06:46:54,869 INFO L226 Difference]: Without dead ends: 979 [2021-04-16 06:46:54,869 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 1492.3ms TimeCoverageRelationStatistics Valid=469, Invalid=2611, Unknown=0, NotChecked=0, Total=3080 [2021-04-16 06:46:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-04-16 06:46:55,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 891. [2021-04-16 06:46:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 837 states have (on average 1.189964157706093) internal successors, (996), 860 states have internal predecessors, (996), 37 states have call successors, (37), 17 states have call predecessors, (37), 16 states have return successors, (35), 13 states have call predecessors, (35), 35 states have call successors, (35) [2021-04-16 06:46:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1068 transitions. [2021-04-16 06:46:55,230 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1068 transitions. Word has length 63 [2021-04-16 06:46:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:55,230 INFO L480 AbstractCegarLoop]: Abstraction has 891 states and 1068 transitions. [2021-04-16 06:46:55,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1068 transitions. [2021-04-16 06:46:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-04-16 06:46:55,231 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:55,231 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:55,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-04-16 06:46:55,231 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:55,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:55,231 INFO L82 PathProgramCache]: Analyzing trace with hash 213760315, now seen corresponding path program 20 times [2021-04-16 06:46:55,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:55,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42865038] [2021-04-16 06:46:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:55,238 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:55,239 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:55,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:55,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:55,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:55,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:55,313 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-04-16 06:46:55,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:55,321 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:46:55,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:55,329 INFO L142 QuantifierPusher]: treesize reduction 78, result has 11.4 percent of original size [2021-04-16 06:46:55,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:55,345 INFO L142 QuantifierPusher]: treesize reduction 31, result has 45.6 percent of original size [2021-04-16 06:46:55,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:55,366 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:46:55,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:46:55,385 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:46:55,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:55,399 INFO L142 QuantifierPusher]: treesize reduction 33, result has 45.9 percent of original size [2021-04-16 06:46:55,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:46:55,404 INFO L142 QuantifierPusher]: treesize reduction 37, result has 50.0 percent of original size [2021-04-16 06:46:55,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:46:55,430 INFO L142 QuantifierPusher]: treesize reduction 37, result has 53.8 percent of original size [2021-04-16 06:46:55,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:46:55,442 INFO L142 QuantifierPusher]: treesize reduction 37, result has 60.6 percent of original size [2021-04-16 06:46:55,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:46:55,478 INFO L142 QuantifierPusher]: treesize reduction 60, result has 57.4 percent of original size [2021-04-16 06:46:55,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:46:55,535 INFO L142 QuantifierPusher]: treesize reduction 60, result has 61.3 percent of original size [2021-04-16 06:46:55,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-04-16 06:46:55,585 INFO L142 QuantifierPusher]: treesize reduction 60, result has 60.5 percent of original size [2021-04-16 06:46:55,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:46:55,627 INFO L142 QuantifierPusher]: treesize reduction 36, result has 37.9 percent of original size [2021-04-16 06:46:55,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:46:55,646 INFO L142 QuantifierPusher]: treesize reduction 30, result has 66.3 percent of original size [2021-04-16 06:46:55,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:46:55,678 INFO L142 QuantifierPusher]: treesize reduction 29, result has 68.5 percent of original size [2021-04-16 06:46:55,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:46:55,714 INFO L142 QuantifierPusher]: treesize reduction 28, result has 60.6 percent of original size [2021-04-16 06:46:55,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:46:55,730 INFO L142 QuantifierPusher]: treesize reduction 28, result has 60.6 percent of original size [2021-04-16 06:46:55,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:46:55,760 INFO L142 QuantifierPusher]: treesize reduction 41, result has 70.3 percent of original size [2021-04-16 06:46:55,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:46:55,815 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.7 percent of original size [2021-04-16 06:46:55,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:46:55,845 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.1 percent of original size [2021-04-16 06:46:55,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:46:55,876 INFO L142 QuantifierPusher]: treesize reduction 20, result has 73.3 percent of original size [2021-04-16 06:46:55,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:46:55,911 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.1 percent of original size [2021-04-16 06:46:55,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:46:55,913 INFO L142 QuantifierPusher]: treesize reduction 21, result has 64.4 percent of original size [2021-04-16 06:46:55,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:46:55,946 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.6 percent of original size [2021-04-16 06:46:55,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:46:55,983 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:46:55,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:46:56,011 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:46:56,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:46:56,035 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:46:56,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:46:56,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:56,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:46:56,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:56,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:56,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:56,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:56,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:56,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:56,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:56,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:56,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:56,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42865038] [2021-04-16 06:46:56,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:56,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:46:56,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494859250] [2021-04-16 06:46:56,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:46:56,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:56,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:46:56,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:46:56,170 INFO L87 Difference]: Start difference. First operand 891 states and 1068 transitions. Second operand has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:58,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:58,597 INFO L93 Difference]: Finished difference Result 1170 states and 1408 transitions. [2021-04-16 06:46:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-04-16 06:46:58,598 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-04-16 06:46:58,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:58,600 INFO L225 Difference]: With dead ends: 1170 [2021-04-16 06:46:58,600 INFO L226 Difference]: Without dead ends: 1168 [2021-04-16 06:46:58,600 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 1449.1ms TimeCoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2021-04-16 06:46:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-04-16 06:46:58,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 940. [2021-04-16 06:46:58,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 882 states have (on average 1.189342403628118) internal successors, (1049), 908 states have internal predecessors, (1049), 40 states have call successors, (40), 18 states have call predecessors, (40), 17 states have return successors, (38), 13 states have call predecessors, (38), 38 states have call successors, (38) [2021-04-16 06:46:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1127 transitions. [2021-04-16 06:46:58,986 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1127 transitions. Word has length 63 [2021-04-16 06:46:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:58,987 INFO L480 AbstractCegarLoop]: Abstraction has 940 states and 1127 transitions. [2021-04-16 06:46:58,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1127 transitions. [2021-04-16 06:46:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:46:58,988 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:58,988 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:58,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-04-16 06:46:58,988 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:58,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:58,988 INFO L82 PathProgramCache]: Analyzing trace with hash -683336596, now seen corresponding path program 12 times [2021-04-16 06:46:58,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:58,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161224932] [2021-04-16 06:46:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:58,992 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:46:58,993 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:59,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:59,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:46:59,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:59,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:46:59,059 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.1 percent of original size [2021-04-16 06:46:59,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-04-16 06:46:59,078 INFO L142 QuantifierPusher]: treesize reduction 16, result has 55.6 percent of original size [2021-04-16 06:46:59,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:46:59,089 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-16 06:46:59,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:46:59,093 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-04-16 06:46:59,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:46:59,099 INFO L142 QuantifierPusher]: treesize reduction 30, result has 61.5 percent of original size [2021-04-16 06:46:59,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:46:59,124 INFO L142 QuantifierPusher]: treesize reduction 30, result has 68.1 percent of original size [2021-04-16 06:46:59,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:46:59,162 INFO L142 QuantifierPusher]: treesize reduction 20, result has 77.5 percent of original size [2021-04-16 06:46:59,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:46:59,196 INFO L142 QuantifierPusher]: treesize reduction 15, result has 77.9 percent of original size [2021-04-16 06:46:59,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:46:59,225 INFO L142 QuantifierPusher]: treesize reduction 17, result has 76.1 percent of original size [2021-04-16 06:46:59,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-04-16 06:46:59,254 INFO L142 QuantifierPusher]: treesize reduction 56, result has 61.1 percent of original size [2021-04-16 06:46:59,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:46:59,304 INFO L142 QuantifierPusher]: treesize reduction 15, result has 76.9 percent of original size [2021-04-16 06:46:59,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:46:59,329 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:46:59,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:46:59,348 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:46:59,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:46:59,365 INFO L142 QuantifierPusher]: treesize reduction 12, result has 64.7 percent of original size [2021-04-16 06:46:59,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:46:59,386 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:46:59,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:46:59,410 INFO L142 QuantifierPusher]: treesize reduction 26, result has 69.0 percent of original size [2021-04-16 06:46:59,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:46:59,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:59,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:59,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:59,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:59,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:59,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:59,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-04-16 06:46:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:59,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:59,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-04-16 06:46:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:59,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:59,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:59,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:59,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161224932] [2021-04-16 06:46:59,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:59,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:46:59,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116488590] [2021-04-16 06:46:59,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:46:59,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:59,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:46:59,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:46:59,523 INFO L87 Difference]: Start difference. First operand 940 states and 1127 transitions. Second operand has 23 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:47:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:00,931 INFO L93 Difference]: Finished difference Result 1022 states and 1225 transitions. [2021-04-16 06:47:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:47:00,932 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 66 [2021-04-16 06:47:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:00,934 INFO L225 Difference]: With dead ends: 1022 [2021-04-16 06:47:00,934 INFO L226 Difference]: Without dead ends: 1006 [2021-04-16 06:47:00,934 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 736.9ms TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2021-04-16 06:47:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-04-16 06:47:01,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 985. [2021-04-16 06:47:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 926 states have (on average 1.187904967602592) internal successors, (1100), 953 states have internal predecessors, (1100), 41 states have call successors, (41), 18 states have call predecessors, (41), 17 states have return successors, (39), 13 states have call predecessors, (39), 39 states have call successors, (39) [2021-04-16 06:47:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1180 transitions. [2021-04-16 06:47:01,337 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1180 transitions. Word has length 66 [2021-04-16 06:47:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:01,337 INFO L480 AbstractCegarLoop]: Abstraction has 985 states and 1180 transitions. [2021-04-16 06:47:01,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:47:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1180 transitions. [2021-04-16 06:47:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-04-16 06:47:01,338 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:01,339 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:01,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-04-16 06:47:01,339 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:01,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:01,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1145647575, now seen corresponding path program 21 times [2021-04-16 06:47:01,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:01,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988347132] [2021-04-16 06:47:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:01,343 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:01,343 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:01,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:01,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:01,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:01,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:01,396 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-04-16 06:47:01,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:01,402 INFO L142 QuantifierPusher]: treesize reduction 13, result has 18.8 percent of original size [2021-04-16 06:47:01,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:01,407 INFO L142 QuantifierPusher]: treesize reduction 14, result has 33.3 percent of original size [2021-04-16 06:47:01,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:01,410 INFO L142 QuantifierPusher]: treesize reduction 39, result has 59.8 percent of original size [2021-04-16 06:47:01,411 INFO L147 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size 40 [2021-04-16 06:47:01,434 INFO L142 QuantifierPusher]: treesize reduction 44, result has 59.6 percent of original size [2021-04-16 06:47:01,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:47:01,475 INFO L142 QuantifierPusher]: treesize reduction 44, result has 58.1 percent of original size [2021-04-16 06:47:01,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:47:01,514 INFO L142 QuantifierPusher]: treesize reduction 35, result has 16.7 percent of original size [2021-04-16 06:47:01,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:01,518 INFO L142 QuantifierPusher]: treesize reduction 33, result has 26.7 percent of original size [2021-04-16 06:47:01,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:01,531 INFO L142 QuantifierPusher]: treesize reduction 33, result has 26.7 percent of original size [2021-04-16 06:47:01,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:01,545 INFO L142 QuantifierPusher]: treesize reduction 33, result has 34.0 percent of original size [2021-04-16 06:47:01,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:01,562 INFO L142 QuantifierPusher]: treesize reduction 32, result has 34.7 percent of original size [2021-04-16 06:47:01,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:01,580 INFO L142 QuantifierPusher]: treesize reduction 33, result has 34.0 percent of original size [2021-04-16 06:47:01,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:01,598 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.3 percent of original size [2021-04-16 06:47:01,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:01,611 INFO L142 QuantifierPusher]: treesize reduction 30, result has 62.0 percent of original size [2021-04-16 06:47:01,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:47:01,646 INFO L142 QuantifierPusher]: treesize reduction 22, result has 63.3 percent of original size [2021-04-16 06:47:01,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:47:01,670 INFO L142 QuantifierPusher]: treesize reduction 18, result has 70.0 percent of original size [2021-04-16 06:47:01,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:47:01,707 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.1 percent of original size [2021-04-16 06:47:01,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:47:01,736 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.7 percent of original size [2021-04-16 06:47:01,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:01,763 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.7 percent of original size [2021-04-16 06:47:01,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:01,792 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.3 percent of original size [2021-04-16 06:47:01,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:47:01,828 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.3 percent of original size [2021-04-16 06:47:01,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:47:01,865 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:47:01,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:01,893 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:47:01,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:01,917 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-04-16 06:47:01,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:47:01,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:01,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:01,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:01,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:01,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:01,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:01,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:01,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:02,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:02,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:02,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988347132] [2021-04-16 06:47:02,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:02,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:47:02,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786271746] [2021-04-16 06:47:02,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:47:02,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:02,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:47:02,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:47:02,030 INFO L87 Difference]: Start difference. First operand 985 states and 1180 transitions. Second operand has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:04,633 INFO L93 Difference]: Finished difference Result 1080 states and 1292 transitions. [2021-04-16 06:47:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-04-16 06:47:04,634 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-04-16 06:47:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:04,636 INFO L225 Difference]: With dead ends: 1080 [2021-04-16 06:47:04,636 INFO L226 Difference]: Without dead ends: 1078 [2021-04-16 06:47:04,636 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 1501.4ms TimeCoverageRelationStatistics Valid=360, Invalid=2720, Unknown=0, NotChecked=0, Total=3080 [2021-04-16 06:47:04,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-04-16 06:47:05,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1023. [2021-04-16 06:47:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 960 states have (on average 1.1885416666666666) internal successors, (1141), 989 states have internal predecessors, (1141), 43 states have call successors, (43), 20 states have call predecessors, (43), 19 states have return successors, (41), 13 states have call predecessors, (41), 41 states have call successors, (41) [2021-04-16 06:47:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1225 transitions. [2021-04-16 06:47:05,068 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1225 transitions. Word has length 64 [2021-04-16 06:47:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:05,068 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1225 transitions. [2021-04-16 06:47:05,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1225 transitions. [2021-04-16 06:47:05,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:05,069 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:05,069 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:05,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-04-16 06:47:05,069 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:05,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:05,070 INFO L82 PathProgramCache]: Analyzing trace with hash 781141083, now seen corresponding path program 13 times [2021-04-16 06:47:05,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:05,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869443981] [2021-04-16 06:47:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:05,076 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:05,076 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:05,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:05,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:05,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:05,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:05,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:05,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:05,127 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:47:05,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:05,131 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-04-16 06:47:05,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:05,136 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-04-16 06:47:05,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:05,142 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-04-16 06:47:05,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:05,149 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:47:05,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:05,157 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:47:05,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:05,166 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-04-16 06:47:05,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:05,184 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-04-16 06:47:05,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:47:05,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:05,217 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size [2021-04-16 06:47:05,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:05,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:05,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:05,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:05,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:05,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:05,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-04-16 06:47:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:05,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:05,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:05,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869443981] [2021-04-16 06:47:05,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:05,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:47:05,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573864457] [2021-04-16 06:47:05,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:47:05,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:05,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:47:05,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:47:05,341 INFO L87 Difference]: Start difference. First operand 1023 states and 1225 transitions. Second operand has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:47:08,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:08,315 INFO L93 Difference]: Finished difference Result 1275 states and 1531 transitions. [2021-04-16 06:47:08,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-04-16 06:47:08,316 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 66 [2021-04-16 06:47:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:08,318 INFO L225 Difference]: With dead ends: 1275 [2021-04-16 06:47:08,318 INFO L226 Difference]: Without dead ends: 1273 [2021-04-16 06:47:08,318 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 1100.0ms TimeCoverageRelationStatistics Valid=303, Invalid=3603, Unknown=0, NotChecked=0, Total=3906 [2021-04-16 06:47:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-04-16 06:47:08,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 981. [2021-04-16 06:47:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 922 states have (on average 1.1887201735357917) internal successors, (1096), 948 states have internal predecessors, (1096), 40 states have call successors, (40), 19 states have call predecessors, (40), 18 states have return successors, (38), 13 states have call predecessors, (38), 38 states have call successors, (38) [2021-04-16 06:47:08,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1174 transitions. [2021-04-16 06:47:08,725 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1174 transitions. Word has length 66 [2021-04-16 06:47:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:08,725 INFO L480 AbstractCegarLoop]: Abstraction has 981 states and 1174 transitions. [2021-04-16 06:47:08,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:47:08,726 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1174 transitions. [2021-04-16 06:47:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:08,727 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:08,727 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:08,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-04-16 06:47:08,727 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:08,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:08,727 INFO L82 PathProgramCache]: Analyzing trace with hash -614168551, now seen corresponding path program 8 times [2021-04-16 06:47:08,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:08,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91398057] [2021-04-16 06:47:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:08,736 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:08,737 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:08,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:08,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:08,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:08,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:08,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:08,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:08,805 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:47:08,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:47:08,821 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-04-16 06:47:08,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:47:08,826 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:47:08,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:47:08,843 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-04-16 06:47:08,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:47:08,848 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:47:08,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:08,862 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:08,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:08,868 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:47:08,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:08,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:08,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:08,895 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:47:08,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:08,899 INFO L142 QuantifierPusher]: treesize reduction 28, result has 62.2 percent of original size [2021-04-16 06:47:08,899 INFO L147 QuantifierPusher]: treesize reduction 7, result has 84.8 percent of original size 39 [2021-04-16 06:47:08,920 INFO L142 QuantifierPusher]: treesize reduction 27, result has 68.6 percent of original size [2021-04-16 06:47:08,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:47:08,957 INFO L142 QuantifierPusher]: treesize reduction 43, result has 61.6 percent of original size [2021-04-16 06:47:08,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:47:09,010 INFO L142 QuantifierPusher]: treesize reduction 44, result has 60.4 percent of original size [2021-04-16 06:47:09,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:47:09,053 INFO L142 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-04-16 06:47:09,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:09,075 INFO L142 QuantifierPusher]: treesize reduction 34, result has 45.2 percent of original size [2021-04-16 06:47:09,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:09,095 INFO L142 QuantifierPusher]: treesize reduction 29, result has 71.3 percent of original size [2021-04-16 06:47:09,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:47:09,133 INFO L142 QuantifierPusher]: treesize reduction 37, result has 69.4 percent of original size [2021-04-16 06:47:09,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:47:09,175 INFO L142 QuantifierPusher]: treesize reduction 37, result has 70.9 percent of original size [2021-04-16 06:47:09,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-04-16 06:47:09,225 INFO L142 QuantifierPusher]: treesize reduction 37, result has 70.2 percent of original size [2021-04-16 06:47:09,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:47:09,271 INFO L142 QuantifierPusher]: treesize reduction 33, result has 71.1 percent of original size [2021-04-16 06:47:09,272 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size 73 [2021-04-16 06:47:09,318 INFO L142 QuantifierPusher]: treesize reduction 31, result has 75.6 percent of original size [2021-04-16 06:47:09,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-04-16 06:47:09,373 INFO L142 QuantifierPusher]: treesize reduction 31, result has 75.2 percent of original size [2021-04-16 06:47:09,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:47:09,427 INFO L142 QuantifierPusher]: treesize reduction 14, result has 67.4 percent of original size [2021-04-16 06:47:09,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:47:09,453 INFO L142 QuantifierPusher]: treesize reduction 15, result has 66.7 percent of original size [2021-04-16 06:47:09,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:47:09,478 INFO L142 QuantifierPusher]: treesize reduction 18, result has 73.9 percent of original size [2021-04-16 06:47:09,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:47:09,511 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:47:09,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:47:09,512 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:47:09,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:47:09,538 INFO L142 QuantifierPusher]: treesize reduction 15, result has 80.5 percent of original size [2021-04-16 06:47:09,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:47:09,570 INFO L142 QuantifierPusher]: treesize reduction 14, result has 70.8 percent of original size [2021-04-16 06:47:09,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:47:09,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:47:09,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:09,616 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-04-16 06:47:09,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:09,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:47:09,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:47:09,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:09,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:09,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:09,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:09,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:09,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-04-16 06:47:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:09,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:09,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91398057] [2021-04-16 06:47:09,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:09,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-04-16 06:47:09,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23237805] [2021-04-16 06:47:09,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-04-16 06:47:09,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:09,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-04-16 06:47:09,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2021-04-16 06:47:09,773 INFO L87 Difference]: Start difference. First operand 981 states and 1174 transitions. Second operand has 34 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 32 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:47:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:13,509 INFO L93 Difference]: Finished difference Result 1257 states and 1508 transitions. [2021-04-16 06:47:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-04-16 06:47:13,510 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 32 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 66 [2021-04-16 06:47:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:13,512 INFO L225 Difference]: With dead ends: 1257 [2021-04-16 06:47:13,512 INFO L226 Difference]: Without dead ends: 1255 [2021-04-16 06:47:13,512 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 2879.8ms TimeCoverageRelationStatistics Valid=877, Invalid=6095, Unknown=0, NotChecked=0, Total=6972 [2021-04-16 06:47:13,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-04-16 06:47:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 992. [2021-04-16 06:47:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 931 states have (on average 1.1879699248120301) internal successors, (1106), 957 states have internal predecessors, (1106), 41 states have call successors, (41), 20 states have call predecessors, (41), 19 states have return successors, (39), 14 states have call predecessors, (39), 39 states have call successors, (39) [2021-04-16 06:47:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1186 transitions. [2021-04-16 06:47:13,941 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1186 transitions. Word has length 66 [2021-04-16 06:47:13,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:13,941 INFO L480 AbstractCegarLoop]: Abstraction has 992 states and 1186 transitions. [2021-04-16 06:47:13,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 32 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:47:13,941 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1186 transitions. [2021-04-16 06:47:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-04-16 06:47:13,942 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:13,942 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:13,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-04-16 06:47:13,943 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:13,943 INFO L82 PathProgramCache]: Analyzing trace with hash -275259755, now seen corresponding path program 14 times [2021-04-16 06:47:13,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:13,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404482176] [2021-04-16 06:47:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:13,947 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:13,948 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:13,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:13,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:13,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:13,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:13,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:13,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:13,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:13,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:14,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:14,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:14,008 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:47:14,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:14,012 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-04-16 06:47:14,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:14,018 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-04-16 06:47:14,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:47:14,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-16 06:47:14,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:14,045 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-04-16 06:47:14,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:14,062 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-04-16 06:47:14,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:14,063 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-04-16 06:47:14,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:14,064 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-04-16 06:47:14,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:14,082 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-04-16 06:47:14,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:14,101 INFO L142 QuantifierPusher]: treesize reduction 24, result has 67.1 percent of original size [2021-04-16 06:47:14,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:47:14,137 INFO L142 QuantifierPusher]: treesize reduction 23, result has 72.9 percent of original size [2021-04-16 06:47:14,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:47:14,189 INFO L142 QuantifierPusher]: treesize reduction 23, result has 72.6 percent of original size [2021-04-16 06:47:14,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:47:14,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:47:14,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:14,256 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-04-16 06:47:14,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:14,278 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:47:14,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:47:14,304 INFO L142 QuantifierPusher]: treesize reduction 28, result has 69.6 percent of original size [2021-04-16 06:47:14,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:47:14,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:14,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:14,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:14,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:14,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:14,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:14,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:14,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:14,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:14,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:14,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:14,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-04-16 06:47:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:14,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:14,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:14,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-04-16 06:47:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:14,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:14,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:14,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404482176] [2021-04-16 06:47:14,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:14,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:47:14,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745630417] [2021-04-16 06:47:14,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:47:14,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:14,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:47:14,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:47:14,441 INFO L87 Difference]: Start difference. First operand 992 states and 1186 transitions. Second operand has 21 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:47:16,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:16,528 INFO L93 Difference]: Finished difference Result 1210 states and 1452 transitions. [2021-04-16 06:47:16,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-04-16 06:47:16,529 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2021-04-16 06:47:16,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:16,531 INFO L225 Difference]: With dead ends: 1210 [2021-04-16 06:47:16,531 INFO L226 Difference]: Without dead ends: 1208 [2021-04-16 06:47:16,532 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 976.9ms TimeCoverageRelationStatistics Valid=268, Invalid=1988, Unknown=0, NotChecked=0, Total=2256 [2021-04-16 06:47:16,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-04-16 06:47:17,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1061. [2021-04-16 06:47:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 988 states have (on average 1.1811740890688258) internal successors, (1167), 1020 states have internal predecessors, (1167), 52 states have call successors, (52), 21 states have call predecessors, (52), 20 states have return successors, (50), 19 states have call predecessors, (50), 50 states have call successors, (50) [2021-04-16 06:47:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1269 transitions. [2021-04-16 06:47:17,036 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1269 transitions. Word has length 68 [2021-04-16 06:47:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:17,036 INFO L480 AbstractCegarLoop]: Abstraction has 1061 states and 1269 transitions. [2021-04-16 06:47:17,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:47:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1269 transitions. [2021-04-16 06:47:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-04-16 06:47:17,037 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:17,037 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:17,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-04-16 06:47:17,038 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:17,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:17,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1734012123, now seen corresponding path program 15 times [2021-04-16 06:47:17,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:17,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90532687] [2021-04-16 06:47:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:17,050 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:17,050 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:17,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:17,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:17,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:17,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:17,109 INFO L142 QuantifierPusher]: treesize reduction 19, result has 71.2 percent of original size [2021-04-16 06:47:17,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:47:17,131 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:17,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:17,143 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-04-16 06:47:17,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:17,147 INFO L142 QuantifierPusher]: treesize reduction 14, result has 70.2 percent of original size [2021-04-16 06:47:17,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:47:17,153 INFO L142 QuantifierPusher]: treesize reduction 14, result has 62.2 percent of original size [2021-04-16 06:47:17,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:17,159 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-04-16 06:47:17,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:17,166 INFO L142 QuantifierPusher]: treesize reduction 39, result has 63.9 percent of original size [2021-04-16 06:47:17,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:47:17,210 INFO L142 QuantifierPusher]: treesize reduction 36, result has 70.7 percent of original size [2021-04-16 06:47:17,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:47:17,276 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-04-16 06:47:17,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:47:17,301 INFO L142 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-04-16 06:47:17,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:47:17,318 INFO L142 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-04-16 06:47:17,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:47:17,335 INFO L142 QuantifierPusher]: treesize reduction 36, result has 66.4 percent of original size [2021-04-16 06:47:17,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:47:17,375 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:47:17,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:17,391 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:47:17,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:17,410 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-04-16 06:47:17,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:17,432 INFO L142 QuantifierPusher]: treesize reduction 36, result has 64.7 percent of original size [2021-04-16 06:47:17,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:47:17,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:17,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:17,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:17,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:17,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:17,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-04-16 06:47:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:17,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:17,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-04-16 06:47:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:17,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:17,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:17,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90532687] [2021-04-16 06:47:17,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:17,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:47:17,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280995514] [2021-04-16 06:47:17,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:47:17,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:17,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:47:17,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:47:17,557 INFO L87 Difference]: Start difference. First operand 1061 states and 1269 transitions. Second operand has 21 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:47:19,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:19,065 INFO L93 Difference]: Finished difference Result 1117 states and 1335 transitions. [2021-04-16 06:47:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:47:19,069 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2021-04-16 06:47:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:19,071 INFO L225 Difference]: With dead ends: 1117 [2021-04-16 06:47:19,071 INFO L226 Difference]: Without dead ends: 1115 [2021-04-16 06:47:19,072 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 826.3ms TimeCoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2021-04-16 06:47:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2021-04-16 06:47:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1043. [2021-04-16 06:47:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 971 states have (on average 1.1822863027806385) internal successors, (1148), 1002 states have internal predecessors, (1148), 51 states have call successors, (51), 21 states have call predecessors, (51), 20 states have return successors, (49), 19 states have call predecessors, (49), 49 states have call successors, (49) [2021-04-16 06:47:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1248 transitions. [2021-04-16 06:47:19,561 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1248 transitions. Word has length 68 [2021-04-16 06:47:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:19,561 INFO L480 AbstractCegarLoop]: Abstraction has 1043 states and 1248 transitions. [2021-04-16 06:47:19,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:47:19,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1248 transitions. [2021-04-16 06:47:19,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:19,562 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:19,562 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:19,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-04-16 06:47:19,562 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:19,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1737340720, now seen corresponding path program 20 times [2021-04-16 06:47:19,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:19,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935714260] [2021-04-16 06:47:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:19,567 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:19,567 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:19,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:19,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:19,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:19,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:19,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:19,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:19,633 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-04-16 06:47:19,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:47:19,649 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:47:19,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:47:19,654 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:47:19,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:19,670 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:19,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:19,676 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:47:19,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:19,693 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:19,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:19,700 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:47:19,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:19,718 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:19,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:19,725 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:47:19,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:19,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:19,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:19,742 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:47:19,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:19,747 INFO L142 QuantifierPusher]: treesize reduction 36, result has 59.1 percent of original size [2021-04-16 06:47:19,747 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.5 percent of original size 45 [2021-04-16 06:47:19,771 INFO L142 QuantifierPusher]: treesize reduction 35, result has 65.0 percent of original size [2021-04-16 06:47:19,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:47:19,814 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.9 percent of original size [2021-04-16 06:47:19,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:47:19,865 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.3 percent of original size [2021-04-16 06:47:19,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:47:19,910 INFO L142 QuantifierPusher]: treesize reduction 13, result has 77.6 percent of original size [2021-04-16 06:47:19,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:47:19,937 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.6 percent of original size [2021-04-16 06:47:19,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:47:19,961 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.3 percent of original size [2021-04-16 06:47:19,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:47:20,001 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:47:20,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:47:20,002 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:47:20,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:47:20,029 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.0 percent of original size [2021-04-16 06:47:20,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:47:20,061 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:47:20,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:47:20,062 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:47:20,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:47:20,091 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.0 percent of original size [2021-04-16 06:47:20,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:47:20,126 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:47:20,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:47:20,127 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.8 percent of original size [2021-04-16 06:47:20,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:47:20,159 INFO L142 QuantifierPusher]: treesize reduction 27, result has 76.3 percent of original size [2021-04-16 06:47:20,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:47:20,201 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.5 percent of original size [2021-04-16 06:47:20,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:47:20,236 INFO L142 QuantifierPusher]: treesize reduction 15, result has 83.0 percent of original size [2021-04-16 06:47:20,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:47:20,272 INFO L142 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-04-16 06:47:20,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:47:20,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:47:20,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:20,323 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-04-16 06:47:20,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:20,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:20,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:20,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:20,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:20,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:20,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:20,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:20,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:20,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:20,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:20,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:20,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935714260] [2021-04-16 06:47:20,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:20,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:47:20,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506527194] [2021-04-16 06:47:20,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:47:20,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:20,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:47:20,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:47:20,458 INFO L87 Difference]: Start difference. First operand 1043 states and 1248 transitions. Second operand has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:23,794 INFO L93 Difference]: Finished difference Result 1295 states and 1557 transitions. [2021-04-16 06:47:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-04-16 06:47:23,795 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-04-16 06:47:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:23,797 INFO L225 Difference]: With dead ends: 1295 [2021-04-16 06:47:23,797 INFO L226 Difference]: Without dead ends: 1293 [2021-04-16 06:47:23,798 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1858.2ms TimeCoverageRelationStatistics Valid=554, Invalid=3736, Unknown=0, NotChecked=0, Total=4290 [2021-04-16 06:47:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2021-04-16 06:47:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1097. [2021-04-16 06:47:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1022 states have (on average 1.1888454011741683) internal successors, (1215), 1054 states have internal predecessors, (1215), 52 states have call successors, (52), 23 states have call predecessors, (52), 22 states have return successors, (50), 19 states have call predecessors, (50), 50 states have call successors, (50) [2021-04-16 06:47:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1317 transitions. [2021-04-16 06:47:24,301 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1317 transitions. Word has length 66 [2021-04-16 06:47:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:24,301 INFO L480 AbstractCegarLoop]: Abstraction has 1097 states and 1317 transitions. [2021-04-16 06:47:24,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1317 transitions. [2021-04-16 06:47:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:24,302 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:24,302 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:24,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-04-16 06:47:24,302 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:24,303 INFO L82 PathProgramCache]: Analyzing trace with hash 688449750, now seen corresponding path program 21 times [2021-04-16 06:47:24,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:24,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150645248] [2021-04-16 06:47:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:24,307 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:24,307 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:24,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:24,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:24,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:24,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:24,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:24,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:24,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:24,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:24,371 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:47:24,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:24,374 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-04-16 06:47:24,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:24,391 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-04-16 06:47:24,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:24,406 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-04-16 06:47:24,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:24,422 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:24,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:24,440 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:24,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:24,460 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:47:24,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:24,481 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.6 percent of original size [2021-04-16 06:47:24,482 INFO L147 QuantifierPusher]: treesize reduction 7, result has 84.4 percent of original size 38 [2021-04-16 06:47:24,525 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.3 percent of original size [2021-04-16 06:47:24,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:47:24,576 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.7 percent of original size [2021-04-16 06:47:24,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:47:24,625 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.2 percent of original size [2021-04-16 06:47:24,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:24,670 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:24,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:24,696 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:24,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:24,719 INFO L142 QuantifierPusher]: treesize reduction 20, result has 73.3 percent of original size [2021-04-16 06:47:24,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:47:24,764 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-04-16 06:47:24,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:24,791 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-04-16 06:47:24,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:24,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:24,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:24,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:24,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:24,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:24,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:24,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:24,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:24,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:24,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:24,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:24,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150645248] [2021-04-16 06:47:24,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:24,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:47:24,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419126236] [2021-04-16 06:47:24,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:47:24,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:24,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:47:24,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:47:24,898 INFO L87 Difference]: Start difference. First operand 1097 states and 1317 transitions. Second operand has 24 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 22 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:27,293 INFO L93 Difference]: Finished difference Result 1231 states and 1482 transitions. [2021-04-16 06:47:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-04-16 06:47:27,295 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 22 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-04-16 06:47:27,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:27,297 INFO L225 Difference]: With dead ends: 1231 [2021-04-16 06:47:27,297 INFO L226 Difference]: Without dead ends: 1229 [2021-04-16 06:47:27,298 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1116.3ms TimeCoverageRelationStatistics Valid=244, Invalid=1562, Unknown=0, NotChecked=0, Total=1806 [2021-04-16 06:47:27,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-04-16 06:47:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1109. [2021-04-16 06:47:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1032 states have (on average 1.188953488372093) internal successors, (1227), 1065 states have internal predecessors, (1227), 53 states have call successors, (53), 24 states have call predecessors, (53), 23 states have return successors, (51), 19 states have call predecessors, (51), 51 states have call successors, (51) [2021-04-16 06:47:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1331 transitions. [2021-04-16 06:47:27,810 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1331 transitions. Word has length 66 [2021-04-16 06:47:27,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:27,810 INFO L480 AbstractCegarLoop]: Abstraction has 1109 states and 1331 transitions. [2021-04-16 06:47:27,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 22 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1331 transitions. [2021-04-16 06:47:27,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:27,812 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:27,812 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:27,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-04-16 06:47:27,812 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:27,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:27,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2061955934, now seen corresponding path program 22 times [2021-04-16 06:47:27,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:27,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352804988] [2021-04-16 06:47:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:27,816 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:27,817 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:27,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:27,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:27,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:27,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:27,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:27,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:27,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:27,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:27,882 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:47:27,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:27,885 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:47:27,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:27,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:27,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:47:27,906 INFO L142 QuantifierPusher]: treesize reduction 28, result has 64.1 percent of original size [2021-04-16 06:47:27,907 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.0 percent of original size 43 [2021-04-16 06:47:27,938 INFO L142 QuantifierPusher]: treesize reduction 27, result has 70.0 percent of original size [2021-04-16 06:47:27,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:47:27,973 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.7 percent of original size [2021-04-16 06:47:27,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:47:28,013 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.2 percent of original size [2021-04-16 06:47:28,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:28,053 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:28,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:28,068 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:28,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:28,098 INFO L142 QuantifierPusher]: treesize reduction 23, result has 68.1 percent of original size [2021-04-16 06:47:28,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:47:28,129 INFO L142 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size [2021-04-16 06:47:28,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:28,130 INFO L142 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size [2021-04-16 06:47:28,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:28,148 INFO L142 QuantifierPusher]: treesize reduction 28, result has 63.6 percent of original size [2021-04-16 06:47:28,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:47:28,181 INFO L142 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size [2021-04-16 06:47:28,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:28,182 INFO L142 QuantifierPusher]: treesize reduction 20, result has 50.0 percent of original size [2021-04-16 06:47:28,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:28,203 INFO L142 QuantifierPusher]: treesize reduction 32, result has 65.6 percent of original size [2021-04-16 06:47:28,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:47:28,239 INFO L142 QuantifierPusher]: treesize reduction 32, result has 65.6 percent of original size [2021-04-16 06:47:28,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:47:28,280 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.0 percent of original size [2021-04-16 06:47:28,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:47:28,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:47:28,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:28,337 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:47:28,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:28,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:28,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:28,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:28,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:28,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:28,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:28,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:28,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:28,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:28,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:28,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352804988] [2021-04-16 06:47:28,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:28,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-04-16 06:47:28,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188039708] [2021-04-16 06:47:28,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-04-16 06:47:28,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:28,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-04-16 06:47:28,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:47:28,457 INFO L87 Difference]: Start difference. First operand 1109 states and 1331 transitions. Second operand has 26 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:30,740 INFO L93 Difference]: Finished difference Result 1221 states and 1464 transitions. [2021-04-16 06:47:30,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-04-16 06:47:30,741 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-04-16 06:47:30,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:30,743 INFO L225 Difference]: With dead ends: 1221 [2021-04-16 06:47:30,743 INFO L226 Difference]: Without dead ends: 1219 [2021-04-16 06:47:30,743 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1412.9ms TimeCoverageRelationStatistics Valid=445, Invalid=2311, Unknown=0, NotChecked=0, Total=2756 [2021-04-16 06:47:30,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-04-16 06:47:31,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1144. [2021-04-16 06:47:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1064 states have (on average 1.1889097744360901) internal successors, (1265), 1098 states have internal predecessors, (1265), 54 states have call successors, (54), 26 states have call predecessors, (54), 25 states have return successors, (52), 19 states have call predecessors, (52), 52 states have call successors, (52) [2021-04-16 06:47:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1371 transitions. [2021-04-16 06:47:31,284 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1371 transitions. Word has length 66 [2021-04-16 06:47:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:31,285 INFO L480 AbstractCegarLoop]: Abstraction has 1144 states and 1371 transitions. [2021-04-16 06:47:31,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1371 transitions. [2021-04-16 06:47:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:31,286 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:31,286 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:31,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-04-16 06:47:31,286 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:31,286 INFO L82 PathProgramCache]: Analyzing trace with hash -140337438, now seen corresponding path program 23 times [2021-04-16 06:47:31,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:31,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700865430] [2021-04-16 06:47:31,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:31,299 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:31,300 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:31,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:31,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:31,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:31,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:31,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:31,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:31,366 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:47:31,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:31,384 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-04-16 06:47:31,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:47:31,389 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:47:31,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:31,417 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:47:31,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:31,424 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:47:31,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:31,443 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:47:31,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:31,451 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:47:31,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:31,472 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:47:31,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:31,482 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:47:31,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:47:31,499 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:47:31,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:31,512 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:47:31,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:31,517 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:47:31,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:31,522 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:47:31,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:47:31,528 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:47:31,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:31,533 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:47:31,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:31,539 INFO L142 QuantifierPusher]: treesize reduction 20, result has 58.3 percent of original size [2021-04-16 06:47:31,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:31,561 INFO L142 QuantifierPusher]: treesize reduction 23, result has 64.6 percent of original size [2021-04-16 06:47:31,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:47:31,589 INFO L142 QuantifierPusher]: treesize reduction 40, result has 56.0 percent of original size [2021-04-16 06:47:31,590 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.3 percent of original size 44 [2021-04-16 06:47:31,630 INFO L142 QuantifierPusher]: treesize reduction 39, result has 63.2 percent of original size [2021-04-16 06:47:31,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:47:31,687 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.9 percent of original size [2021-04-16 06:47:31,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:47:31,741 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.1 percent of original size [2021-04-16 06:47:31,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:47:31,781 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:47:31,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:31,808 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:47:31,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:31,835 INFO L142 QuantifierPusher]: treesize reduction 20, result has 74.0 percent of original size [2021-04-16 06:47:31,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:47:31,869 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:47:31,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:31,870 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:47:31,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:31,900 INFO L142 QuantifierPusher]: treesize reduction 20, result has 81.3 percent of original size [2021-04-16 06:47:31,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:47:31,940 INFO L142 QuantifierPusher]: treesize reduction 15, result has 85.3 percent of original size [2021-04-16 06:47:31,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:47:31,982 INFO L142 QuantifierPusher]: treesize reduction 14, result has 79.1 percent of original size [2021-04-16 06:47:31,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:47:32,024 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:47:32,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:32,060 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:47:32,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:32,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:47:32,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:47:32,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:47:32,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:32,147 INFO L142 QuantifierPusher]: treesize reduction 19, result has 65.5 percent of original size [2021-04-16 06:47:32,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:32,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:32,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:32,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:32,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:32,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:32,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:32,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:32,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:32,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:32,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:32,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:32,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700865430] [2021-04-16 06:47:32,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:32,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:47:32,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682069200] [2021-04-16 06:47:32,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:47:32,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:32,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:47:32,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:47:32,289 INFO L87 Difference]: Start difference. First operand 1144 states and 1371 transitions. Second operand has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:35,017 INFO L93 Difference]: Finished difference Result 1251 states and 1499 transitions. [2021-04-16 06:47:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-04-16 06:47:35,018 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-04-16 06:47:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:35,021 INFO L225 Difference]: With dead ends: 1251 [2021-04-16 06:47:35,021 INFO L226 Difference]: Without dead ends: 1249 [2021-04-16 06:47:35,021 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 1700.8ms TimeCoverageRelationStatistics Valid=477, Invalid=2603, Unknown=0, NotChecked=0, Total=3080 [2021-04-16 06:47:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-04-16 06:47:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1160. [2021-04-16 06:47:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1078 states have (on average 1.1883116883116882) internal successors, (1281), 1113 states have internal predecessors, (1281), 55 states have call successors, (55), 27 states have call predecessors, (55), 26 states have return successors, (53), 19 states have call predecessors, (53), 53 states have call successors, (53) [2021-04-16 06:47:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1389 transitions. [2021-04-16 06:47:35,574 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1389 transitions. Word has length 66 [2021-04-16 06:47:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:35,574 INFO L480 AbstractCegarLoop]: Abstraction has 1160 states and 1389 transitions. [2021-04-16 06:47:35,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1389 transitions. [2021-04-16 06:47:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:35,575 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:35,575 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:35,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-04-16 06:47:35,575 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:35,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1333008662, now seen corresponding path program 24 times [2021-04-16 06:47:35,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:35,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638195036] [2021-04-16 06:47:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:35,580 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:35,581 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:35,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:35,647 INFO L142 QuantifierPusher]: treesize reduction 13, result has 75.9 percent of original size [2021-04-16 06:47:35,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:35,664 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.7 percent of original size [2021-04-16 06:47:35,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:47:35,669 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:47:35,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:35,685 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:47:35,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:35,691 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:47:35,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:35,709 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:47:35,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:35,716 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:47:35,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:35,735 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:47:35,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:35,743 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:47:35,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:47:35,760 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:47:35,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:35,771 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:47:35,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:35,776 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:47:35,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:35,783 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:47:35,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:47:35,791 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:47:35,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:35,795 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:47:35,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:35,799 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-04-16 06:47:35,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:35,820 INFO L142 QuantifierPusher]: treesize reduction 18, result has 70.0 percent of original size [2021-04-16 06:47:35,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:47:35,847 INFO L142 QuantifierPusher]: treesize reduction 40, result has 56.0 percent of original size [2021-04-16 06:47:35,848 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.3 percent of original size 44 [2021-04-16 06:47:35,884 INFO L142 QuantifierPusher]: treesize reduction 39, result has 63.2 percent of original size [2021-04-16 06:47:35,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:47:35,942 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.9 percent of original size [2021-04-16 06:47:35,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:47:35,999 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.1 percent of original size [2021-04-16 06:47:36,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:47:36,047 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:47:36,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:36,090 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:47:36,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:36,121 INFO L142 QuantifierPusher]: treesize reduction 15, result has 85.3 percent of original size [2021-04-16 06:47:36,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:47:36,170 INFO L142 QuantifierPusher]: treesize reduction 14, result has 79.1 percent of original size [2021-04-16 06:47:36,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:47:36,210 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:47:36,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:36,244 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:47:36,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:36,280 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.9 percent of original size [2021-04-16 06:47:36,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:47:36,321 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:47:36,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:36,323 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:47:36,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:36,361 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.2 percent of original size [2021-04-16 06:47:36,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:47:36,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:47:36,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:47:36,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:47:36,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:36,452 INFO L142 QuantifierPusher]: treesize reduction 19, result has 65.5 percent of original size [2021-04-16 06:47:36,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:36,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:36,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:36,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:36,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:36,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:36,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638195036] [2021-04-16 06:47:36,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:36,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:47:36,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337276560] [2021-04-16 06:47:36,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:47:36,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:36,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:47:36,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:47:36,591 INFO L87 Difference]: Start difference. First operand 1160 states and 1389 transitions. Second operand has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:39,183 INFO L93 Difference]: Finished difference Result 1268 states and 1514 transitions. [2021-04-16 06:47:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-04-16 06:47:39,185 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-04-16 06:47:39,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:39,202 INFO L225 Difference]: With dead ends: 1268 [2021-04-16 06:47:39,202 INFO L226 Difference]: Without dead ends: 1266 [2021-04-16 06:47:39,202 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1592.4ms TimeCoverageRelationStatistics Valid=408, Invalid=2142, Unknown=0, NotChecked=0, Total=2550 [2021-04-16 06:47:39,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-04-16 06:47:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1166. [2021-04-16 06:47:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1085 states have (on average 1.1889400921658986) internal successors, (1290), 1119 states have internal predecessors, (1290), 54 states have call successors, (54), 27 states have call predecessors, (54), 26 states have return successors, (52), 19 states have call predecessors, (52), 52 states have call successors, (52) [2021-04-16 06:47:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1396 transitions. [2021-04-16 06:47:39,936 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1396 transitions. Word has length 66 [2021-04-16 06:47:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:39,936 INFO L480 AbstractCegarLoop]: Abstraction has 1166 states and 1396 transitions. [2021-04-16 06:47:39,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1396 transitions. [2021-04-16 06:47:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:39,937 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:39,937 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:39,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-04-16 06:47:39,938 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:39,939 INFO L82 PathProgramCache]: Analyzing trace with hash 146305884, now seen corresponding path program 25 times [2021-04-16 06:47:39,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:39,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400682191] [2021-04-16 06:47:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:39,943 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:39,944 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,058 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-04-16 06:47:40,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:40,088 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-04-16 06:47:40,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:47:40,093 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:47:40,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:40,110 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:47:40,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:40,116 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:47:40,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:40,133 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:47:40,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:40,141 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-04-16 06:47:40,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:40,159 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:47:40,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:40,168 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:47:40,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:47:40,183 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:47:40,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:40,211 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:47:40,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:40,216 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:47:40,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:47:40,221 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:47:40,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:47:40,225 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:47:40,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:40,229 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:47:40,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:40,234 INFO L142 QuantifierPusher]: treesize reduction 22, result has 59.3 percent of original size [2021-04-16 06:47:40,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:47:40,283 INFO L142 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-04-16 06:47:40,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:47:40,313 INFO L142 QuantifierPusher]: treesize reduction 40, result has 58.3 percent of original size [2021-04-16 06:47:40,313 INFO L147 QuantifierPusher]: treesize reduction 7, result has 87.5 percent of original size 49 [2021-04-16 06:47:40,382 INFO L142 QuantifierPusher]: treesize reduction 39, result has 63.6 percent of original size [2021-04-16 06:47:40,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:47:40,437 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.9 percent of original size [2021-04-16 06:47:40,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:47:40,488 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.1 percent of original size [2021-04-16 06:47:40,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:47:40,532 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:47:40,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:40,560 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-04-16 06:47:40,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:40,591 INFO L142 QuantifierPusher]: treesize reduction 15, result has 85.3 percent of original size [2021-04-16 06:47:40,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:47:40,631 INFO L142 QuantifierPusher]: treesize reduction 14, result has 79.1 percent of original size [2021-04-16 06:47:40,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:47:40,670 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:47:40,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:40,704 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:47:40,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:40,738 INFO L142 QuantifierPusher]: treesize reduction 10, result has 88.9 percent of original size [2021-04-16 06:47:40,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:47:40,787 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.9 percent of original size [2021-04-16 06:47:40,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:47:40,829 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:47:40,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:40,830 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:47:40,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:40,870 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:47:40,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:47:40,898 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:47:40,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:40,921 INFO L142 QuantifierPusher]: treesize reduction 19, result has 65.5 percent of original size [2021-04-16 06:47:40,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:40,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:40,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:40,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:41,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:41,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:41,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400682191] [2021-04-16 06:47:41,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:41,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:47:41,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689284296] [2021-04-16 06:47:41,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:47:41,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:41,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:47:41,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:47:41,066 INFO L87 Difference]: Start difference. First operand 1166 states and 1396 transitions. Second operand has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:44,223 INFO L93 Difference]: Finished difference Result 1311 states and 1569 transitions. [2021-04-16 06:47:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-04-16 06:47:44,224 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-04-16 06:47:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:44,226 INFO L225 Difference]: With dead ends: 1311 [2021-04-16 06:47:44,226 INFO L226 Difference]: Without dead ends: 1309 [2021-04-16 06:47:44,226 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 5 SyntacticMatches, 9 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 2043.9ms TimeCoverageRelationStatistics Valid=534, Invalid=3372, Unknown=0, NotChecked=0, Total=3906 [2021-04-16 06:47:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2021-04-16 06:47:44,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1175. [2021-04-16 06:47:44,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1094 states have (on average 1.190127970749543) internal successors, (1302), 1128 states have internal predecessors, (1302), 54 states have call successors, (54), 27 states have call predecessors, (54), 26 states have return successors, (52), 19 states have call predecessors, (52), 52 states have call successors, (52) [2021-04-16 06:47:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1408 transitions. [2021-04-16 06:47:44,765 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1408 transitions. Word has length 66 [2021-04-16 06:47:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:44,765 INFO L480 AbstractCegarLoop]: Abstraction has 1175 states and 1408 transitions. [2021-04-16 06:47:44,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1408 transitions. [2021-04-16 06:47:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:44,766 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:44,766 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:44,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-04-16 06:47:44,767 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:44,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:44,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1811130830, now seen corresponding path program 22 times [2021-04-16 06:47:44,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:44,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873599638] [2021-04-16 06:47:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:44,771 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:44,772 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:44,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:44,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:44,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:44,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:44,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:44,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:44,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:44,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:44,833 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:47:44,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:44,837 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-04-16 06:47:44,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:47:44,859 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.9 percent of original size [2021-04-16 06:47:44,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:47:44,866 INFO L142 QuantifierPusher]: treesize reduction 17, result has 59.5 percent of original size [2021-04-16 06:47:44,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:47:44,872 INFO L142 QuantifierPusher]: treesize reduction 19, result has 38.7 percent of original size [2021-04-16 06:47:44,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:44,877 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:47:44,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:44,886 INFO L142 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-04-16 06:47:44,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:44,906 INFO L142 QuantifierPusher]: treesize reduction 15, result has 61.5 percent of original size [2021-04-16 06:47:44,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:47:44,933 INFO L142 QuantifierPusher]: treesize reduction 10, result has 69.7 percent of original size [2021-04-16 06:47:44,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:44,956 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-04-16 06:47:44,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:47:44,988 INFO L142 QuantifierPusher]: treesize reduction 34, result has 58.5 percent of original size [2021-04-16 06:47:44,988 INFO L147 QuantifierPusher]: treesize reduction 8, result has 83.3 percent of original size 40 [2021-04-16 06:47:45,020 INFO L142 QuantifierPusher]: treesize reduction 34, result has 67.9 percent of original size [2021-04-16 06:47:45,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:47:45,073 INFO L142 QuantifierPusher]: treesize reduction 34, result has 67.0 percent of original size [2021-04-16 06:47:45,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:47:45,120 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:45,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:45,147 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:45,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:45,175 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.8 percent of original size [2021-04-16 06:47:45,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:47:45,210 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:45,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:45,211 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:45,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:45,244 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.8 percent of original size [2021-04-16 06:47:45,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:47:45,288 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:45,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:45,289 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:45,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:45,329 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-04-16 06:47:45,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:47:45,373 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:47:45,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:45,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:47:45,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:45,444 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-04-16 06:47:45,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:47:45,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:45,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:45,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:45,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:45,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:45,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873599638] [2021-04-16 06:47:45,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:45,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:47:45,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166013602] [2021-04-16 06:47:45,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:47:45,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:45,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:47:45,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:47:45,575 INFO L87 Difference]: Start difference. First operand 1175 states and 1408 transitions. Second operand has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:47,935 INFO L93 Difference]: Finished difference Result 1230 states and 1472 transitions. [2021-04-16 06:47:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-04-16 06:47:47,936 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-04-16 06:47:47,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:47,938 INFO L225 Difference]: With dead ends: 1230 [2021-04-16 06:47:47,938 INFO L226 Difference]: Without dead ends: 1228 [2021-04-16 06:47:47,938 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1579.7ms TimeCoverageRelationStatistics Valid=393, Invalid=2363, Unknown=0, NotChecked=0, Total=2756 [2021-04-16 06:47:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-04-16 06:47:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1166. [2021-04-16 06:47:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1086 states have (on average 1.1896869244935544) internal successors, (1292), 1119 states have internal predecessors, (1292), 53 states have call successors, (53), 27 states have call predecessors, (53), 26 states have return successors, (51), 19 states have call predecessors, (51), 51 states have call successors, (51) [2021-04-16 06:47:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1396 transitions. [2021-04-16 06:47:48,486 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1396 transitions. Word has length 66 [2021-04-16 06:47:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:48,486 INFO L480 AbstractCegarLoop]: Abstraction has 1166 states and 1396 transitions. [2021-04-16 06:47:48,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1396 transitions. [2021-04-16 06:47:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:48,487 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:48,487 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:48,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-04-16 06:47:48,488 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:48,488 INFO L82 PathProgramCache]: Analyzing trace with hash 624428052, now seen corresponding path program 23 times [2021-04-16 06:47:48,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:48,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798410919] [2021-04-16 06:47:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:48,492 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:48,493 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:48,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:48,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:48,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:48,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:48,551 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:47:48,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:48,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:48,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:48,580 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-04-16 06:47:48,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:48,603 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size [2021-04-16 06:47:48,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:47:48,631 INFO L142 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-04-16 06:47:48,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:47:48,667 INFO L142 QuantifierPusher]: treesize reduction 21, result has 73.8 percent of original size [2021-04-16 06:47:48,667 INFO L147 QuantifierPusher]: treesize reduction 8, result has 86.4 percent of original size 51 [2021-04-16 06:47:48,708 INFO L142 QuantifierPusher]: treesize reduction 19, result has 81.4 percent of original size [2021-04-16 06:47:48,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-04-16 06:47:48,770 INFO L142 QuantifierPusher]: treesize reduction 19, result has 80.8 percent of original size [2021-04-16 06:47:48,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:47:48,823 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:48,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:48,849 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:48,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:48,877 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.8 percent of original size [2021-04-16 06:47:48,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:47:48,911 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:48,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:48,913 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:48,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:48,945 INFO L142 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-04-16 06:47:48,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 06:47:48,988 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.8 percent of original size [2021-04-16 06:47:48,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:47:49,026 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:49,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:49,027 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:47:49,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:49,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:47:49,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:49,087 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:47:49,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:49,109 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:47:49,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:47:49,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:49,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:49,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:49,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:49,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:49,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:49,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798410919] [2021-04-16 06:47:49,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:49,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-04-16 06:47:49,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640709407] [2021-04-16 06:47:49,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-04-16 06:47:49,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:49,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-04-16 06:47:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:47:49,228 INFO L87 Difference]: Start difference. First operand 1166 states and 1396 transitions. Second operand has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:52,334 INFO L93 Difference]: Finished difference Result 1267 states and 1516 transitions. [2021-04-16 06:47:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-04-16 06:47:52,336 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-04-16 06:47:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:52,338 INFO L225 Difference]: With dead ends: 1267 [2021-04-16 06:47:52,338 INFO L226 Difference]: Without dead ends: 1265 [2021-04-16 06:47:52,339 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 2172.5ms TimeCoverageRelationStatistics Valid=511, Invalid=3029, Unknown=0, NotChecked=0, Total=3540 [2021-04-16 06:47:52,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2021-04-16 06:47:52,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1179. [2021-04-16 06:47:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1097 states have (on average 1.1886964448495898) internal successors, (1304), 1131 states have internal predecessors, (1304), 54 states have call successors, (54), 28 states have call predecessors, (54), 27 states have return successors, (52), 19 states have call predecessors, (52), 52 states have call successors, (52) [2021-04-16 06:47:52,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1410 transitions. [2021-04-16 06:47:52,889 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1410 transitions. Word has length 66 [2021-04-16 06:47:52,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:52,889 INFO L480 AbstractCegarLoop]: Abstraction has 1179 states and 1410 transitions. [2021-04-16 06:47:52,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1410 transitions. [2021-04-16 06:47:52,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:52,891 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:52,891 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:52,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-04-16 06:47:52,891 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:52,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:52,891 INFO L82 PathProgramCache]: Analyzing trace with hash -337327382, now seen corresponding path program 24 times [2021-04-16 06:47:52,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:52,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217274669] [2021-04-16 06:47:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:52,896 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:52,896 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:52,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:52,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:52,970 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:47:52,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:52,978 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:47:52,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:52,987 INFO L142 QuantifierPusher]: treesize reduction 67, result has 21.2 percent of original size [2021-04-16 06:47:52,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:53,004 INFO L142 QuantifierPusher]: treesize reduction 28, result has 48.1 percent of original size [2021-04-16 06:47:53,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:47:53,022 INFO L142 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-04-16 06:47:53,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:47:53,041 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:47:53,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:53,055 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-04-16 06:47:53,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:53,059 INFO L142 QuantifierPusher]: treesize reduction 30, result has 57.1 percent of original size [2021-04-16 06:47:53,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:53,082 INFO L142 QuantifierPusher]: treesize reduction 32, result has 55.6 percent of original size [2021-04-16 06:47:53,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:47:53,116 INFO L142 QuantifierPusher]: treesize reduction 32, result has 61.9 percent of original size [2021-04-16 06:47:53,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:47:53,166 INFO L142 QuantifierPusher]: treesize reduction 60, result has 57.4 percent of original size [2021-04-16 06:47:53,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:47:53,232 INFO L142 QuantifierPusher]: treesize reduction 60, result has 61.3 percent of original size [2021-04-16 06:47:53,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-04-16 06:47:53,289 INFO L142 QuantifierPusher]: treesize reduction 60, result has 60.5 percent of original size [2021-04-16 06:47:53,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:47:53,336 INFO L142 QuantifierPusher]: treesize reduction 46, result has 32.4 percent of original size [2021-04-16 06:47:53,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:53,360 INFO L142 QuantifierPusher]: treesize reduction 35, result has 59.3 percent of original size [2021-04-16 06:47:53,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:47:53,395 INFO L142 QuantifierPusher]: treesize reduction 35, result has 62.8 percent of original size [2021-04-16 06:47:53,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:47:53,436 INFO L142 QuantifierPusher]: treesize reduction 35, result has 55.1 percent of original size [2021-04-16 06:47:53,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:47:53,455 INFO L142 QuantifierPusher]: treesize reduction 35, result has 55.1 percent of original size [2021-04-16 06:47:53,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:47:53,489 INFO L142 QuantifierPusher]: treesize reduction 51, result has 66.2 percent of original size [2021-04-16 06:47:53,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:47:53,557 INFO L142 QuantifierPusher]: treesize reduction 35, result has 55.1 percent of original size [2021-04-16 06:47:53,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:47:53,558 INFO L142 QuantifierPusher]: treesize reduction 35, result has 54.5 percent of original size [2021-04-16 06:47:53,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:47:53,595 INFO L142 QuantifierPusher]: treesize reduction 35, result has 62.4 percent of original size [2021-04-16 06:47:53,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:47:53,638 INFO L142 QuantifierPusher]: treesize reduction 35, result has 54.5 percent of original size [2021-04-16 06:47:53,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:47:53,639 INFO L142 QuantifierPusher]: treesize reduction 36, result has 53.2 percent of original size [2021-04-16 06:47:53,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:53,677 INFO L142 QuantifierPusher]: treesize reduction 35, result has 65.0 percent of original size [2021-04-16 06:47:53,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:47:53,725 INFO L142 QuantifierPusher]: treesize reduction 34, result has 62.6 percent of original size [2021-04-16 06:47:53,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:47:53,762 INFO L142 QuantifierPusher]: treesize reduction 37, result has 67.0 percent of original size [2021-04-16 06:47:53,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:47:53,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:47:53,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:53,852 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:47:53,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:47:53,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:53,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:53,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:53,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:54,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:54,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:54,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217274669] [2021-04-16 06:47:54,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:54,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-04-16 06:47:54,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321321519] [2021-04-16 06:47:54,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-04-16 06:47:54,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:54,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-04-16 06:47:54,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2021-04-16 06:47:54,036 INFO L87 Difference]: Start difference. First operand 1179 states and 1410 transitions. Second operand has 32 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:57,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:57,719 INFO L93 Difference]: Finished difference Result 1535 states and 1847 transitions. [2021-04-16 06:47:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-04-16 06:47:57,721 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-04-16 06:47:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:57,723 INFO L225 Difference]: With dead ends: 1535 [2021-04-16 06:47:57,724 INFO L226 Difference]: Without dead ends: 1533 [2021-04-16 06:47:57,724 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1987.1ms TimeCoverageRelationStatistics Valid=318, Invalid=2874, Unknown=0, NotChecked=0, Total=3192 [2021-04-16 06:47:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2021-04-16 06:47:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1259. [2021-04-16 06:47:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1170 states have (on average 1.1897435897435897) internal successors, (1392), 1209 states have internal predecessors, (1392), 59 states have call successors, (59), 30 states have call predecessors, (59), 29 states have return successors, (57), 19 states have call predecessors, (57), 57 states have call successors, (57) [2021-04-16 06:47:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1508 transitions. [2021-04-16 06:47:58,349 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1508 transitions. Word has length 66 [2021-04-16 06:47:58,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:58,349 INFO L480 AbstractCegarLoop]: Abstraction has 1259 states and 1508 transitions. [2021-04-16 06:47:58,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:58,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1508 transitions. [2021-04-16 06:47:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:47:58,351 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:58,351 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:58,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-04-16 06:47:58,351 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:58,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:58,351 INFO L82 PathProgramCache]: Analyzing trace with hash 667727747, now seen corresponding path program 9 times [2021-04-16 06:47:58,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:58,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923002182] [2021-04-16 06:47:58,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:58,361 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:58,362 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:58,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:58,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:58,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:58,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:58,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:58,447 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:47:58,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:58,451 INFO L142 QuantifierPusher]: treesize reduction 23, result has 39.5 percent of original size [2021-04-16 06:47:58,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:47:58,458 INFO L142 QuantifierPusher]: treesize reduction 22, result has 67.2 percent of original size [2021-04-16 06:47:58,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:47:58,488 INFO L142 QuantifierPusher]: treesize reduction 23, result has 74.2 percent of original size [2021-04-16 06:47:58,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:47:58,534 INFO L142 QuantifierPusher]: treesize reduction 13, result has 81.2 percent of original size [2021-04-16 06:47:58,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:47:58,570 INFO L142 QuantifierPusher]: treesize reduction 13, result has 80.3 percent of original size [2021-04-16 06:47:58,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:47:58,617 INFO L142 QuantifierPusher]: treesize reduction 13, result has 79.4 percent of original size [2021-04-16 06:47:58,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:47:58,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-04-16 06:47:58,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:47:58,687 INFO L142 QuantifierPusher]: treesize reduction 41, result has 56.4 percent of original size [2021-04-16 06:47:58,688 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.8 percent of original size 46 [2021-04-16 06:47:58,725 INFO L142 QuantifierPusher]: treesize reduction 43, result has 66.4 percent of original size [2021-04-16 06:47:58,726 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.8 percent of original size 78 [2021-04-16 06:47:58,773 INFO L142 QuantifierPusher]: treesize reduction 63, result has 59.9 percent of original size [2021-04-16 06:47:58,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:47:58,833 INFO L142 QuantifierPusher]: treesize reduction 53, result has 64.2 percent of original size [2021-04-16 06:47:58,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-04-16 06:47:58,886 INFO L142 QuantifierPusher]: treesize reduction 24, result has 80.3 percent of original size [2021-04-16 06:47:58,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:47:58,961 INFO L142 QuantifierPusher]: treesize reduction 46, result has 62.6 percent of original size [2021-04-16 06:47:58,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:47:59,010 INFO L142 QuantifierPusher]: treesize reduction 46, result has 62.0 percent of original size [2021-04-16 06:47:59,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:47:59,058 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.6 percent of original size [2021-04-16 06:47:59,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:47:59,102 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:47:59,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:59,126 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:47:59,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:59,154 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:47:59,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:59,186 INFO L142 QuantifierPusher]: treesize reduction 26, result has 69.0 percent of original size [2021-04-16 06:47:59,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:47:59,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:47:59,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:59,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:59,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:59,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:59,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:59,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-04-16 06:47:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:59,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:59,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-04-16 06:47:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:59,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:59,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923002182] [2021-04-16 06:47:59,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:59,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:47:59,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719041992] [2021-04-16 06:47:59,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:47:59,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:59,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:47:59,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:47:59,328 INFO L87 Difference]: Start difference. First operand 1259 states and 1508 transitions. Second operand has 28 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 26 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:48:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:01,603 INFO L93 Difference]: Finished difference Result 1303 states and 1557 transitions. [2021-04-16 06:48:01,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-04-16 06:48:01,604 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 26 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 69 [2021-04-16 06:48:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:01,606 INFO L225 Difference]: With dead ends: 1303 [2021-04-16 06:48:01,606 INFO L226 Difference]: Without dead ends: 1268 [2021-04-16 06:48:01,607 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1461.0ms TimeCoverageRelationStatistics Valid=204, Invalid=1602, Unknown=0, NotChecked=0, Total=1806 [2021-04-16 06:48:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-04-16 06:48:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1247. [2021-04-16 06:48:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1158 states have (on average 1.190846286701209) internal successors, (1379), 1197 states have internal predecessors, (1379), 59 states have call successors, (59), 30 states have call predecessors, (59), 29 states have return successors, (57), 19 states have call predecessors, (57), 57 states have call successors, (57) [2021-04-16 06:48:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1495 transitions. [2021-04-16 06:48:02,202 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1495 transitions. Word has length 69 [2021-04-16 06:48:02,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:02,202 INFO L480 AbstractCegarLoop]: Abstraction has 1247 states and 1495 transitions. [2021-04-16 06:48:02,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 26 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:48:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1495 transitions. [2021-04-16 06:48:02,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:48:02,204 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:02,204 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:02,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-04-16 06:48:02,204 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:02,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1360968119, now seen corresponding path program 10 times [2021-04-16 06:48:02,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:02,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79160358] [2021-04-16 06:48:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:02,208 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:02,209 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:02,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:02,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:02,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:02,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:02,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:02,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:02,269 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:48:02,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:48:02,288 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:48:02,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:48:02,290 INFO L142 QuantifierPusher]: treesize reduction 22, result has 65.1 percent of original size [2021-04-16 06:48:02,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:48:02,321 INFO L142 QuantifierPusher]: treesize reduction 22, result has 60.0 percent of original size [2021-04-16 06:48:02,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:48:02,329 INFO L142 QuantifierPusher]: treesize reduction 44, result has 60.7 percent of original size [2021-04-16 06:48:02,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:48:02,356 INFO L142 QuantifierPusher]: treesize reduction 36, result has 65.4 percent of original size [2021-04-16 06:48:02,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:48:02,358 INFO L142 QuantifierPusher]: treesize reduction 22, result has 55.1 percent of original size [2021-04-16 06:48:02,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:02,372 INFO L142 QuantifierPusher]: treesize reduction 35, result has 50.0 percent of original size [2021-04-16 06:48:02,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:02,378 INFO L142 QuantifierPusher]: treesize reduction 74, result has 62.8 percent of original size [2021-04-16 06:48:02,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-04-16 06:48:02,425 INFO L142 QuantifierPusher]: treesize reduction 66, result has 67.0 percent of original size [2021-04-16 06:48:02,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-04-16 06:48:02,474 INFO L142 QuantifierPusher]: treesize reduction 81, result has 60.5 percent of original size [2021-04-16 06:48:02,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-04-16 06:48:02,527 INFO L142 QuantifierPusher]: treesize reduction 81, result has 60.3 percent of original size [2021-04-16 06:48:02,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-04-16 06:48:02,576 INFO L142 QuantifierPusher]: treesize reduction 65, result has 55.8 percent of original size [2021-04-16 06:48:02,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:48:02,611 INFO L142 QuantifierPusher]: treesize reduction 55, result has 57.4 percent of original size [2021-04-16 06:48:02,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:48:02,645 INFO L142 QuantifierPusher]: treesize reduction 50, result has 65.0 percent of original size [2021-04-16 06:48:02,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:48:02,691 INFO L142 QuantifierPusher]: treesize reduction 85, result has 54.8 percent of original size [2021-04-16 06:48:02,691 INFO L147 QuantifierPusher]: treesize reduction 7, result has 93.2 percent of original size 96 [2021-04-16 06:48:02,747 INFO L142 QuantifierPusher]: treesize reduction 84, result has 58.6 percent of original size [2021-04-16 06:48:02,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-04-16 06:48:02,823 INFO L142 QuantifierPusher]: treesize reduction 84, result has 58.2 percent of original size [2021-04-16 06:48:02,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-04-16 06:48:02,879 INFO L142 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-04-16 06:48:02,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:48:02,930 INFO L142 QuantifierPusher]: treesize reduction 42, result has 62.5 percent of original size [2021-04-16 06:48:02,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:48:02,986 INFO L142 QuantifierPusher]: treesize reduction 44, result has 60.4 percent of original size [2021-04-16 06:48:02,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:48:03,033 INFO L142 QuantifierPusher]: treesize reduction 44, result has 53.7 percent of original size [2021-04-16 06:48:03,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:48:03,076 INFO L142 QuantifierPusher]: treesize reduction 46, result has 53.1 percent of original size [2021-04-16 06:48:03,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:48:03,117 INFO L142 QuantifierPusher]: treesize reduction 74, result has 53.8 percent of original size [2021-04-16 06:48:03,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 06:48:03,181 INFO L142 QuantifierPusher]: treesize reduction 25, result has 65.8 percent of original size [2021-04-16 06:48:03,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:48:03,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:48:03,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:48:03,253 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:48:03,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:48:03,283 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-04-16 06:48:03,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:48:03,317 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-04-16 06:48:03,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:48:03,358 INFO L142 QuantifierPusher]: treesize reduction 26, result has 68.3 percent of original size [2021-04-16 06:48:03,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:48:03,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:03,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:03,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:03,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:03,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:03,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:03,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-04-16 06:48:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:03,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:03,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-04-16 06:48:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:03,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:03,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79160358] [2021-04-16 06:48:03,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:03,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-04-16 06:48:03,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188851864] [2021-04-16 06:48:03,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-04-16 06:48:03,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:03,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-04-16 06:48:03,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2021-04-16 06:48:03,550 INFO L87 Difference]: Start difference. First operand 1247 states and 1495 transitions. Second operand has 33 states, 32 states have (on average 1.8125) internal successors, (58), 31 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:48:07,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:07,367 INFO L93 Difference]: Finished difference Result 1369 states and 1633 transitions. [2021-04-16 06:48:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-04-16 06:48:07,369 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.8125) internal successors, (58), 31 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 69 [2021-04-16 06:48:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:07,371 INFO L225 Difference]: With dead ends: 1369 [2021-04-16 06:48:07,371 INFO L226 Difference]: Without dead ends: 1353 [2021-04-16 06:48:07,372 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 2491.4ms TimeCoverageRelationStatistics Valid=333, Invalid=3207, Unknown=0, NotChecked=0, Total=3540 [2021-04-16 06:48:07,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2021-04-16 06:48:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1301. [2021-04-16 06:48:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1212 states have (on average 1.188943894389439) internal successors, (1441), 1251 states have internal predecessors, (1441), 59 states have call successors, (59), 30 states have call predecessors, (59), 29 states have return successors, (57), 19 states have call predecessors, (57), 57 states have call successors, (57) [2021-04-16 06:48:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1557 transitions. [2021-04-16 06:48:08,024 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1557 transitions. Word has length 69 [2021-04-16 06:48:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:08,024 INFO L480 AbstractCegarLoop]: Abstraction has 1301 states and 1557 transitions. [2021-04-16 06:48:08,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 1.8125) internal successors, (58), 31 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:48:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1557 transitions. [2021-04-16 06:48:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-04-16 06:48:08,026 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:08,026 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:08,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-04-16 06:48:08,026 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1404533430, now seen corresponding path program 16 times [2021-04-16 06:48:08,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:08,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682500305] [2021-04-16 06:48:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:08,031 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:08,032 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:08,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:08,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:08,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:08,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:08,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:08,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:48:08,105 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:48:08,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:48:08,111 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-04-16 06:48:08,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:08,123 INFO L142 QuantifierPusher]: treesize reduction 19, result has 56.8 percent of original size [2021-04-16 06:48:08,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:48:08,145 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-04-16 06:48:08,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:48:08,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:08,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:08,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:08,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:08,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:08,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:08,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:08,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:08,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:48:08,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:48:08,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:48:08,368 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-04-16 06:48:08,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:08,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:48:08,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:08,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:08,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:08,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:08,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:08,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:08,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-04-16 06:48:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:08,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:08,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682500305] [2021-04-16 06:48:08,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:08,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:48:08,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454165066] [2021-04-16 06:48:08,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:48:08,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:08,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:48:08,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:48:08,559 INFO L87 Difference]: Start difference. First operand 1301 states and 1557 transitions. Second operand has 23 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 21 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:10,864 INFO L93 Difference]: Finished difference Result 1394 states and 1667 transitions. [2021-04-16 06:48:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-16 06:48:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 21 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2021-04-16 06:48:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:10,867 INFO L225 Difference]: With dead ends: 1394 [2021-04-16 06:48:10,867 INFO L226 Difference]: Without dead ends: 1392 [2021-04-16 06:48:10,868 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1071.3ms TimeCoverageRelationStatistics Valid=266, Invalid=1456, Unknown=0, NotChecked=0, Total=1722 [2021-04-16 06:48:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-04-16 06:48:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1324. [2021-04-16 06:48:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1235 states have (on average 1.1919028340080973) internal successors, (1472), 1273 states have internal predecessors, (1472), 59 states have call successors, (59), 30 states have call predecessors, (59), 29 states have return successors, (57), 20 states have call predecessors, (57), 57 states have call successors, (57) [2021-04-16 06:48:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1588 transitions. [2021-04-16 06:48:11,518 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1588 transitions. Word has length 68 [2021-04-16 06:48:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:11,518 INFO L480 AbstractCegarLoop]: Abstraction has 1324 states and 1588 transitions. [2021-04-16 06:48:11,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 21 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1588 transitions. [2021-04-16 06:48:11,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-04-16 06:48:11,519 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:11,520 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:11,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-04-16 06:48:11,520 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:11,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:11,520 INFO L82 PathProgramCache]: Analyzing trace with hash 2068396432, now seen corresponding path program 17 times [2021-04-16 06:48:11,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:11,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145104407] [2021-04-16 06:48:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:11,524 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:11,525 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:11,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:11,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:11,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:11,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:11,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:11,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:48:11,593 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:48:11,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:48:11,598 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-04-16 06:48:11,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:48:11,614 INFO L142 QuantifierPusher]: treesize reduction 16, result has 70.9 percent of original size [2021-04-16 06:48:11,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:48:11,647 INFO L142 QuantifierPusher]: treesize reduction 11, result has 76.6 percent of original size [2021-04-16 06:48:11,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:48:11,670 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:48:11,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:11,692 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:48:11,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:11,712 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size [2021-04-16 06:48:11,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:48:11,739 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:48:11,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:11,740 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:48:11,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:11,762 INFO L142 QuantifierPusher]: treesize reduction 5, result has 93.1 percent of original size [2021-04-16 06:48:11,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:48:11,801 INFO L142 QuantifierPusher]: treesize reduction 4, result has 90.7 percent of original size [2021-04-16 06:48:11,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:48:11,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:11,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:11,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:48:11,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:48:11,934 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-04-16 06:48:11,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:11,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:48:11,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:12,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:12,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:12,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:12,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:12,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:12,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-04-16 06:48:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:12,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:12,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145104407] [2021-04-16 06:48:12,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:12,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:48:12,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696853150] [2021-04-16 06:48:12,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:48:12,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:12,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:48:12,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:48:12,119 INFO L87 Difference]: Start difference. First operand 1324 states and 1588 transitions. Second operand has 24 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 22 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:14,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:14,941 INFO L93 Difference]: Finished difference Result 1428 states and 1712 transitions. [2021-04-16 06:48:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-04-16 06:48:14,943 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 22 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2021-04-16 06:48:14,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:14,945 INFO L225 Difference]: With dead ends: 1428 [2021-04-16 06:48:14,945 INFO L226 Difference]: Without dead ends: 1426 [2021-04-16 06:48:14,945 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1394.0ms TimeCoverageRelationStatistics Valid=265, Invalid=1897, Unknown=0, NotChecked=0, Total=2162 [2021-04-16 06:48:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-04-16 06:48:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1360. [2021-04-16 06:48:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1268 states have (on average 1.1932176656151419) internal successors, (1513), 1309 states have internal predecessors, (1513), 62 states have call successors, (62), 30 states have call predecessors, (62), 29 states have return successors, (60), 20 states have call predecessors, (60), 60 states have call successors, (60) [2021-04-16 06:48:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1635 transitions. [2021-04-16 06:48:15,639 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1635 transitions. Word has length 68 [2021-04-16 06:48:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:15,639 INFO L480 AbstractCegarLoop]: Abstraction has 1360 states and 1635 transitions. [2021-04-16 06:48:15,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 22 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1635 transitions. [2021-04-16 06:48:15,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:48:15,641 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:15,641 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:15,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-04-16 06:48:15,641 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:15,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:15,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1755632320, now seen corresponding path program 11 times [2021-04-16 06:48:15,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:15,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166153877] [2021-04-16 06:48:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:15,647 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:15,648 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:15,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:15,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:15,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:15,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:15,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:15,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:15,720 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-04-16 06:48:15,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:48:15,746 INFO L142 QuantifierPusher]: treesize reduction 18, result has 64.0 percent of original size [2021-04-16 06:48:15,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:48:15,752 INFO L142 QuantifierPusher]: treesize reduction 22, result has 60.7 percent of original size [2021-04-16 06:48:15,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:48:15,776 INFO L142 QuantifierPusher]: treesize reduction 22, result has 60.7 percent of original size [2021-04-16 06:48:15,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:48:15,779 INFO L142 QuantifierPusher]: treesize reduction 64, result has 54.0 percent of original size [2021-04-16 06:48:15,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:48:15,816 INFO L142 QuantifierPusher]: treesize reduction 64, result has 51.1 percent of original size [2021-04-16 06:48:15,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:48:15,828 INFO L142 QuantifierPusher]: treesize reduction 40, result has 31.0 percent of original size [2021-04-16 06:48:15,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:15,850 INFO L142 QuantifierPusher]: treesize reduction 22, result has 45.0 percent of original size [2021-04-16 06:48:15,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:15,851 INFO L142 QuantifierPusher]: treesize reduction 29, result has 9.4 percent of original size [2021-04-16 06:48:15,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:15,860 INFO L142 QuantifierPusher]: treesize reduction 41, result has 22.6 percent of original size [2021-04-16 06:48:15,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:15,866 INFO L142 QuantifierPusher]: treesize reduction 66, result has 48.8 percent of original size [2021-04-16 06:48:15,877 INFO L147 QuantifierPusher]: treesize reduction 19, result has 69.8 percent of original size 44 [2021-04-16 06:48:15,909 INFO L142 QuantifierPusher]: treesize reduction 65, result has 54.9 percent of original size [2021-04-16 06:48:15,910 INFO L147 QuantifierPusher]: treesize reduction 12, result has 84.8 percent of original size 67 [2021-04-16 06:48:15,961 INFO L142 QuantifierPusher]: treesize reduction 65, result has 57.8 percent of original size [2021-04-16 06:48:15,962 INFO L147 QuantifierPusher]: treesize reduction 12, result has 86.5 percent of original size 77 [2021-04-16 06:48:16,031 INFO L142 QuantifierPusher]: treesize reduction 65, result has 57.5 percent of original size [2021-04-16 06:48:16,032 INFO L147 QuantifierPusher]: treesize reduction 12, result has 86.4 percent of original size 76 [2021-04-16 06:48:16,096 INFO L142 QuantifierPusher]: treesize reduction 35, result has 44.4 percent of original size [2021-04-16 06:48:16,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:48:16,125 INFO L142 QuantifierPusher]: treesize reduction 33, result has 59.3 percent of original size [2021-04-16 06:48:16,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:48:16,159 INFO L142 QuantifierPusher]: treesize reduction 36, result has 65.7 percent of original size [2021-04-16 06:48:16,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:48:16,205 INFO L142 QuantifierPusher]: treesize reduction 38, result has 55.8 percent of original size [2021-04-16 06:48:16,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:48:16,207 INFO L142 QuantifierPusher]: treesize reduction 40, result has 54.5 percent of original size [2021-04-16 06:48:16,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:48:16,247 INFO L142 QuantifierPusher]: treesize reduction 62, result has 61.0 percent of original size [2021-04-16 06:48:16,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:16,304 INFO L142 QuantifierPusher]: treesize reduction 53, result has 47.5 percent of original size [2021-04-16 06:48:16,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:48:16,306 INFO L142 QuantifierPusher]: treesize reduction 53, result has 47.0 percent of original size [2021-04-16 06:48:16,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:16,346 INFO L142 QuantifierPusher]: treesize reduction 53, result has 57.3 percent of original size [2021-04-16 06:48:16,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:48:16,392 INFO L142 QuantifierPusher]: treesize reduction 71, result has 56.7 percent of original size [2021-04-16 06:48:16,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:48:16,443 INFO L142 QuantifierPusher]: treesize reduction 42, result has 52.3 percent of original size [2021-04-16 06:48:16,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:48:16,490 INFO L142 QuantifierPusher]: treesize reduction 40, result has 61.2 percent of original size [2021-04-16 06:48:16,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:48:16,539 INFO L142 QuantifierPusher]: treesize reduction 59, result has 54.3 percent of original size [2021-04-16 06:48:16,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:48:16,603 INFO L142 QuantifierPusher]: treesize reduction 61, result has 52.0 percent of original size [2021-04-16 06:48:16,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:48:16,634 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-04-16 06:48:16,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:48:16,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-04-16 06:48:16,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:48:16,711 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:48:16,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:16,749 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:48:16,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:16,784 INFO L142 QuantifierPusher]: treesize reduction 22, result has 56.9 percent of original size [2021-04-16 06:48:16,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:48:16,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:48:16,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:16,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:16,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:16,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:16,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:17,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:17,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:17,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-04-16 06:48:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:17,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:17,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:17,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166153877] [2021-04-16 06:48:17,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:17,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-04-16 06:48:17,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142381899] [2021-04-16 06:48:17,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-04-16 06:48:17,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:17,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-04-16 06:48:17,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2021-04-16 06:48:17,011 INFO L87 Difference]: Start difference. First operand 1360 states and 1635 transitions. Second operand has 33 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:23,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:23,862 INFO L93 Difference]: Finished difference Result 1642 states and 1968 transitions. [2021-04-16 06:48:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-04-16 06:48:23,864 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 69 [2021-04-16 06:48:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:23,866 INFO L225 Difference]: With dead ends: 1642 [2021-04-16 06:48:23,867 INFO L226 Difference]: Without dead ends: 1640 [2021-04-16 06:48:23,867 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3204 ImplicationChecksByTransitivity, 4672.0ms TimeCoverageRelationStatistics Valid=903, Invalid=9197, Unknown=0, NotChecked=0, Total=10100 [2021-04-16 06:48:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-04-16 06:48:24,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1365. [2021-04-16 06:48:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1274 states have (on average 1.1915227629513343) internal successors, (1518), 1314 states have internal predecessors, (1518), 61 states have call successors, (61), 30 states have call predecessors, (61), 29 states have return successors, (59), 20 states have call predecessors, (59), 59 states have call successors, (59) [2021-04-16 06:48:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1638 transitions. [2021-04-16 06:48:24,603 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1638 transitions. Word has length 69 [2021-04-16 06:48:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:24,603 INFO L480 AbstractCegarLoop]: Abstraction has 1365 states and 1638 transitions. [2021-04-16 06:48:24,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1638 transitions. [2021-04-16 06:48:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:48:24,605 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:24,605 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:24,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-04-16 06:48:24,605 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:24,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:24,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1758967990, now seen corresponding path program 12 times [2021-04-16 06:48:24,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:24,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102951858] [2021-04-16 06:48:24,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:24,612 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:24,612 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:24,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:24,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:24,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:24,689 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-04-16 06:48:24,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:48:24,712 INFO L142 QuantifierPusher]: treesize reduction 18, result has 64.0 percent of original size [2021-04-16 06:48:24,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:48:24,718 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:48:24,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:48:24,741 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:48:24,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:48:24,743 INFO L142 QuantifierPusher]: treesize reduction 52, result has 60.9 percent of original size [2021-04-16 06:48:24,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:24,778 INFO L142 QuantifierPusher]: treesize reduction 52, result has 58.4 percent of original size [2021-04-16 06:48:24,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:48:24,790 INFO L142 QuantifierPusher]: treesize reduction 42, result has 36.4 percent of original size [2021-04-16 06:48:24,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:24,814 INFO L142 QuantifierPusher]: treesize reduction 32, result has 33.3 percent of original size [2021-04-16 06:48:24,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:48:24,824 INFO L142 QuantifierPusher]: treesize reduction 37, result has 7.5 percent of original size [2021-04-16 06:48:24,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:24,833 INFO L142 QuantifierPusher]: treesize reduction 49, result has 19.7 percent of original size [2021-04-16 06:48:24,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:24,839 INFO L142 QuantifierPusher]: treesize reduction 95, result has 47.2 percent of original size [2021-04-16 06:48:24,839 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.8 percent of original size 78 [2021-04-16 06:48:24,890 INFO L142 QuantifierPusher]: treesize reduction 94, result has 51.8 percent of original size [2021-04-16 06:48:24,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:24,965 INFO L142 QuantifierPusher]: treesize reduction 94, result has 54.6 percent of original size [2021-04-16 06:48:24,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-04-16 06:48:25,046 INFO L142 QuantifierPusher]: treesize reduction 94, result has 53.9 percent of original size [2021-04-16 06:48:25,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-04-16 06:48:25,117 INFO L142 QuantifierPusher]: treesize reduction 73, result has 40.2 percent of original size [2021-04-16 06:48:25,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:48:25,151 INFO L142 QuantifierPusher]: treesize reduction 48, result has 49.5 percent of original size [2021-04-16 06:48:25,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:25,192 INFO L142 QuantifierPusher]: treesize reduction 51, result has 57.1 percent of original size [2021-04-16 06:48:25,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:48:25,236 INFO L142 QuantifierPusher]: treesize reduction 53, result has 47.0 percent of original size [2021-04-16 06:48:25,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:25,238 INFO L142 QuantifierPusher]: treesize reduction 55, result has 46.1 percent of original size [2021-04-16 06:48:25,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:25,274 INFO L142 QuantifierPusher]: treesize reduction 77, result has 62.1 percent of original size [2021-04-16 06:48:25,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:48:25,336 INFO L142 QuantifierPusher]: treesize reduction 54, result has 59.4 percent of original size [2021-04-16 06:48:25,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:48:25,394 INFO L142 QuantifierPusher]: treesize reduction 54, result has 59.4 percent of original size [2021-04-16 06:48:25,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:48:25,396 INFO L142 QuantifierPusher]: treesize reduction 57, result has 62.0 percent of original size [2021-04-16 06:48:25,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:48:25,454 INFO L142 QuantifierPusher]: treesize reduction 76, result has 56.8 percent of original size [2021-04-16 06:48:25,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:48:25,530 INFO L142 QuantifierPusher]: treesize reduction 78, result has 55.2 percent of original size [2021-04-16 06:48:25,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-04-16 06:48:25,558 INFO L142 QuantifierPusher]: treesize reduction 44, result has 57.3 percent of original size [2021-04-16 06:48:25,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:48:25,631 INFO L142 QuantifierPusher]: treesize reduction 44, result has 54.2 percent of original size [2021-04-16 06:48:25,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:48:25,696 INFO L142 QuantifierPusher]: treesize reduction 46, result has 51.6 percent of original size [2021-04-16 06:48:25,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:48:25,763 INFO L142 QuantifierPusher]: treesize reduction 46, result has 41.8 percent of original size [2021-04-16 06:48:25,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:48:25,810 INFO L142 QuantifierPusher]: treesize reduction 45, result has 42.3 percent of original size [2021-04-16 06:48:25,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:48:25,855 INFO L142 QuantifierPusher]: treesize reduction 30, result has 68.4 percent of original size [2021-04-16 06:48:25,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:48:25,912 INFO L142 QuantifierPusher]: treesize reduction 41, result has 61.7 percent of original size [2021-04-16 06:48:25,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:48:25,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:48:25,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:26,005 INFO L142 QuantifierPusher]: treesize reduction 32, result has 47.5 percent of original size [2021-04-16 06:48:26,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:48:26,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:48:26,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:26,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:26,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:26,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:26,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:26,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:26,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:26,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:26,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:26,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:26,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-04-16 06:48:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:26,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:26,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:26,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102951858] [2021-04-16 06:48:26,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:26,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-04-16 06:48:26,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987739390] [2021-04-16 06:48:26,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-04-16 06:48:26,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:26,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-04-16 06:48:26,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2021-04-16 06:48:26,248 INFO L87 Difference]: Start difference. First operand 1365 states and 1638 transitions. Second operand has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 32 states have internal predecessors, (63), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:31,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:31,415 INFO L93 Difference]: Finished difference Result 1564 states and 1879 transitions. [2021-04-16 06:48:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-04-16 06:48:31,417 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 32 states have internal predecessors, (63), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 69 [2021-04-16 06:48:31,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:31,419 INFO L225 Difference]: With dead ends: 1564 [2021-04-16 06:48:31,419 INFO L226 Difference]: Without dead ends: 1562 [2021-04-16 06:48:31,420 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1656 ImplicationChecksByTransitivity, 3346.4ms TimeCoverageRelationStatistics Valid=490, Invalid=4912, Unknown=0, NotChecked=0, Total=5402 [2021-04-16 06:48:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-04-16 06:48:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1359. [2021-04-16 06:48:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1271 states have (on average 1.1935483870967742) internal successors, (1517), 1311 states have internal predecessors, (1517), 59 states have call successors, (59), 29 states have call predecessors, (59), 28 states have return successors, (57), 18 states have call predecessors, (57), 57 states have call successors, (57) [2021-04-16 06:48:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1633 transitions. [2021-04-16 06:48:32,104 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1633 transitions. Word has length 69 [2021-04-16 06:48:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:32,104 INFO L480 AbstractCegarLoop]: Abstraction has 1359 states and 1633 transitions. [2021-04-16 06:48:32,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 32 states have internal predecessors, (63), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1633 transitions. [2021-04-16 06:48:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:48:32,106 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:32,106 INFO L519 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:32,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-04-16 06:48:32,106 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:32,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:32,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1944728152, now seen corresponding path program 13 times [2021-04-16 06:48:32,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:32,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407732692] [2021-04-16 06:48:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:32,111 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:32,112 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:32,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:32,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:32,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:32,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:32,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:32,222 INFO L142 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-04-16 06:48:32,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:32,228 INFO L142 QuantifierPusher]: treesize reduction 22, result has 54.2 percent of original size [2021-04-16 06:48:32,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:32,253 INFO L142 QuantifierPusher]: treesize reduction 22, result has 59.3 percent of original size [2021-04-16 06:48:32,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:48:32,264 INFO L142 QuantifierPusher]: treesize reduction 22, result has 67.6 percent of original size [2021-04-16 06:48:32,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:48:32,305 INFO L142 QuantifierPusher]: treesize reduction 35, result has 60.2 percent of original size [2021-04-16 06:48:32,306 INFO L147 QuantifierPusher]: treesize reduction 8, result has 84.9 percent of original size 45 [2021-04-16 06:48:32,343 INFO L142 QuantifierPusher]: treesize reduction 47, result has 56.5 percent of original size [2021-04-16 06:48:32,344 INFO L147 QuantifierPusher]: treesize reduction 8, result has 86.9 percent of original size 53 [2021-04-16 06:48:32,395 INFO L142 QuantifierPusher]: treesize reduction 49, result has 54.2 percent of original size [2021-04-16 06:48:32,396 INFO L147 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size 50 [2021-04-16 06:48:32,438 INFO L142 QuantifierPusher]: treesize reduction 24, result has 65.2 percent of original size [2021-04-16 06:48:32,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:48:32,469 INFO L142 QuantifierPusher]: treesize reduction 25, result has 67.9 percent of original size [2021-04-16 06:48:32,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:48:32,511 INFO L142 QuantifierPusher]: treesize reduction 33, result has 67.3 percent of original size [2021-04-16 06:48:32,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:48:32,569 INFO L142 QuantifierPusher]: treesize reduction 33, result has 67.3 percent of original size [2021-04-16 06:48:32,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:48:32,571 INFO L142 QuantifierPusher]: treesize reduction 40, result has 69.0 percent of original size [2021-04-16 06:48:32,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-04-16 06:48:32,637 INFO L142 QuantifierPusher]: treesize reduction 49, result has 66.9 percent of original size [2021-04-16 06:48:32,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-04-16 06:48:32,695 INFO L142 QuantifierPusher]: treesize reduction 49, result has 66.2 percent of original size [2021-04-16 06:48:32,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-04-16 06:48:32,753 INFO L142 QuantifierPusher]: treesize reduction 20, result has 72.2 percent of original size [2021-04-16 06:48:32,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:48:32,804 INFO L142 QuantifierPusher]: treesize reduction 17, result has 74.6 percent of original size [2021-04-16 06:48:32,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:48:32,858 INFO L142 QuantifierPusher]: treesize reduction 19, result has 71.2 percent of original size [2021-04-16 06:48:32,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:32,900 INFO L142 QuantifierPusher]: treesize reduction 19, result has 62.0 percent of original size [2021-04-16 06:48:32,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:48:32,937 INFO L142 QuantifierPusher]: treesize reduction 20, result has 61.5 percent of original size [2021-04-16 06:48:32,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:48:32,973 INFO L142 QuantifierPusher]: treesize reduction 19, result has 69.8 percent of original size [2021-04-16 06:48:32,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:48:33,019 INFO L142 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-04-16 06:48:33,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:33,054 INFO L142 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-04-16 06:48:33,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:33,092 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.8 percent of original size [2021-04-16 06:48:33,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:48:33,137 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-04-16 06:48:33,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:48:33,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:48:33,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:33,211 INFO L142 QuantifierPusher]: treesize reduction 11, result has 68.6 percent of original size [2021-04-16 06:48:33,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:33,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:48:33,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:33,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:33,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:48:33,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:33,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:33,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:33,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:33,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:33,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:33,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:33,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:33,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-04-16 06:48:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:33,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:33,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:33,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407732692] [2021-04-16 06:48:33,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:33,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-04-16 06:48:33,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99960844] [2021-04-16 06:48:33,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-04-16 06:48:33,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:33,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-04-16 06:48:33,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2021-04-16 06:48:33,442 INFO L87 Difference]: Start difference. First operand 1359 states and 1633 transitions. Second operand has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:34,735 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2021-04-16 06:48:35,499 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-04-16 06:48:38,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:38,383 INFO L93 Difference]: Finished difference Result 1437 states and 1724 transitions. [2021-04-16 06:48:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-04-16 06:48:38,385 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 69 [2021-04-16 06:48:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:38,388 INFO L225 Difference]: With dead ends: 1437 [2021-04-16 06:48:38,388 INFO L226 Difference]: Without dead ends: 1435 [2021-04-16 06:48:38,388 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 3579.8ms TimeCoverageRelationStatistics Valid=491, Invalid=4201, Unknown=0, NotChecked=0, Total=4692 [2021-04-16 06:48:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2021-04-16 06:48:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1391. [2021-04-16 06:48:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1297 states have (on average 1.1919814957594448) internal successors, (1546), 1338 states have internal predecessors, (1546), 63 states have call successors, (63), 31 states have call predecessors, (63), 30 states have return successors, (61), 21 states have call predecessors, (61), 61 states have call successors, (61) [2021-04-16 06:48:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1670 transitions. [2021-04-16 06:48:39,113 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1670 transitions. Word has length 69 [2021-04-16 06:48:39,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:39,113 INFO L480 AbstractCegarLoop]: Abstraction has 1391 states and 1670 transitions. [2021-04-16 06:48:39,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:39,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1670 transitions. [2021-04-16 06:48:39,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-04-16 06:48:39,115 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:39,115 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:39,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-04-16 06:48:39,115 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:39,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1004222264, now seen corresponding path program 18 times [2021-04-16 06:48:39,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:39,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299706582] [2021-04-16 06:48:39,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:39,120 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:39,121 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:39,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:39,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:39,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:39,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:39,184 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-04-16 06:48:39,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:39,210 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:48:39,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:48:39,225 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-04-16 06:48:39,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:39,230 INFO L142 QuantifierPusher]: treesize reduction 14, result has 70.2 percent of original size [2021-04-16 06:48:39,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:48:39,237 INFO L142 QuantifierPusher]: treesize reduction 16, result has 69.8 percent of original size [2021-04-16 06:48:39,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:48:39,266 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-16 06:48:39,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:39,272 INFO L142 QuantifierPusher]: treesize reduction 20, result has 53.5 percent of original size [2021-04-16 06:48:39,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:39,281 INFO L142 QuantifierPusher]: treesize reduction 20, result has 53.5 percent of original size [2021-04-16 06:48:39,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:39,289 INFO L142 QuantifierPusher]: treesize reduction 20, result has 53.5 percent of original size [2021-04-16 06:48:39,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:39,297 INFO L142 QuantifierPusher]: treesize reduction 20, result has 53.5 percent of original size [2021-04-16 06:48:39,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:39,321 INFO L142 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size [2021-04-16 06:48:39,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:39,348 INFO L142 QuantifierPusher]: treesize reduction 47, result has 51.0 percent of original size [2021-04-16 06:48:39,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:48:39,392 INFO L142 QuantifierPusher]: treesize reduction 46, result has 58.9 percent of original size [2021-04-16 06:48:39,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:48:39,463 INFO L142 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-04-16 06:48:39,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:39,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:48:39,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:39,511 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-04-16 06:48:39,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:48:39,540 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:48:39,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:39,572 INFO L142 QuantifierPusher]: treesize reduction 26, result has 69.0 percent of original size [2021-04-16 06:48:39,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:48:39,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:48:39,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:39,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:39,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:39,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:39,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-04-16 06:48:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:39,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:39,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-04-16 06:48:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:39,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:39,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:39,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299706582] [2021-04-16 06:48:39,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:39,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:48:39,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620402031] [2021-04-16 06:48:39,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:48:39,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:39,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:48:39,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:48:39,726 INFO L87 Difference]: Start difference. First operand 1391 states and 1670 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:48:43,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:43,067 INFO L93 Difference]: Finished difference Result 1587 states and 1909 transitions. [2021-04-16 06:48:43,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-04-16 06:48:43,070 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 71 [2021-04-16 06:48:43,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:43,072 INFO L225 Difference]: With dead ends: 1587 [2021-04-16 06:48:43,072 INFO L226 Difference]: Without dead ends: 1585 [2021-04-16 06:48:43,072 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1256.0ms TimeCoverageRelationStatistics Valid=222, Invalid=1848, Unknown=0, NotChecked=0, Total=2070 [2021-04-16 06:48:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-04-16 06:48:43,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1432. [2021-04-16 06:48:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1330 states have (on average 1.1879699248120301) internal successors, (1580), 1374 states have internal predecessors, (1580), 70 states have call successors, (70), 32 states have call predecessors, (70), 31 states have return successors, (68), 25 states have call predecessors, (68), 68 states have call successors, (68) [2021-04-16 06:48:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1718 transitions. [2021-04-16 06:48:43,892 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1718 transitions. Word has length 71 [2021-04-16 06:48:43,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:43,893 INFO L480 AbstractCegarLoop]: Abstraction has 1432 states and 1718 transitions. [2021-04-16 06:48:43,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:48:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1718 transitions. [2021-04-16 06:48:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:48:43,897 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:43,897 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:43,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-04-16 06:48:43,897 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:43,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1795844299, now seen corresponding path program 26 times [2021-04-16 06:48:43,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:43,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429615188] [2021-04-16 06:48:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:43,903 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:43,905 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:44,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:44,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:44,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:44,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:44,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:44,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:44,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:44,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:44,037 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:48:44,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:44,043 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-04-16 06:48:44,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:44,063 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-04-16 06:48:44,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:44,084 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-04-16 06:48:44,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:44,103 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-04-16 06:48:44,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:44,122 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-04-16 06:48:44,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:44,144 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-04-16 06:48:44,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:44,179 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-04-16 06:48:44,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:44,203 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-04-16 06:48:44,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:44,228 INFO L142 QuantifierPusher]: treesize reduction 23, result has 54.0 percent of original size [2021-04-16 06:48:44,228 INFO L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-04-16 06:48:44,254 INFO L142 QuantifierPusher]: treesize reduction 22, result has 66.2 percent of original size [2021-04-16 06:48:44,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:48:44,274 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.1 percent of original size [2021-04-16 06:48:44,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-04-16 06:48:44,323 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-04-16 06:48:44,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:48:44,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:48:44,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:48:44,389 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-04-16 06:48:44,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:48:44,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:44,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:44,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:44,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:44,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:44,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:44,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:44,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:44,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:44,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:44,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:44,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429615188] [2021-04-16 06:48:44,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:44,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:48:44,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348837362] [2021-04-16 06:48:44,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:48:44,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:44,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:48:44,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:48:44,539 INFO L87 Difference]: Start difference. First operand 1432 states and 1718 transitions. Second operand has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:51,306 INFO L93 Difference]: Finished difference Result 2239 states and 2741 transitions. [2021-04-16 06:48:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-04-16 06:48:51,308 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-04-16 06:48:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:51,311 INFO L225 Difference]: With dead ends: 2239 [2021-04-16 06:48:51,311 INFO L226 Difference]: Without dead ends: 2237 [2021-04-16 06:48:51,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3470 ImplicationChecksByTransitivity, 2566.0ms TimeCoverageRelationStatistics Valid=764, Invalid=9742, Unknown=0, NotChecked=0, Total=10506 [2021-04-16 06:48:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2021-04-16 06:48:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 1634. [2021-04-16 06:48:52,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1523 states have (on average 1.200919238345371) internal successors, (1829), 1574 states have internal predecessors, (1829), 77 states have call successors, (77), 34 states have call predecessors, (77), 33 states have return successors, (75), 25 states have call predecessors, (75), 75 states have call successors, (75) [2021-04-16 06:48:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 1981 transitions. [2021-04-16 06:48:52,221 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 1981 transitions. Word has length 69 [2021-04-16 06:48:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:52,221 INFO L480 AbstractCegarLoop]: Abstraction has 1634 states and 1981 transitions. [2021-04-16 06:48:52,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 1981 transitions. [2021-04-16 06:48:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:48:52,223 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:52,223 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:52,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-04-16 06:48:52,223 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:52,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:52,223 INFO L82 PathProgramCache]: Analyzing trace with hash -671758409, now seen corresponding path program 25 times [2021-04-16 06:48:52,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:52,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921350817] [2021-04-16 06:48:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:52,232 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:52,233 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:52,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:52,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:52,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:52,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:52,288 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:48:52,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:52,300 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:48:52,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:52,313 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:48:52,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:52,328 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:48:52,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:52,344 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:48:52,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:52,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:52,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:52,379 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:48:52,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:52,385 INFO L142 QuantifierPusher]: treesize reduction 20, result has 37.5 percent of original size [2021-04-16 06:48:52,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:52,393 INFO L142 QuantifierPusher]: treesize reduction 20, result has 37.5 percent of original size [2021-04-16 06:48:52,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:52,402 INFO L142 QuantifierPusher]: treesize reduction 20, result has 37.5 percent of original size [2021-04-16 06:48:52,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:52,412 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-04-16 06:48:52,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:48:52,446 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-04-16 06:48:52,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:48:52,480 INFO L142 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-04-16 06:48:52,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:48:52,516 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-04-16 06:48:52,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:48:52,555 INFO L142 QuantifierPusher]: treesize reduction 20, result has 53.5 percent of original size [2021-04-16 06:48:52,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:52,580 INFO L142 QuantifierPusher]: treesize reduction 20, result has 64.3 percent of original size [2021-04-16 06:48:52,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:48:52,635 INFO L142 QuantifierPusher]: treesize reduction 26, result has 73.2 percent of original size [2021-04-16 06:48:52,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:48:52,720 INFO L142 QuantifierPusher]: treesize reduction 26, result has 76.4 percent of original size [2021-04-16 06:48:52,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:48:52,789 INFO L142 QuantifierPusher]: treesize reduction 26, result has 75.9 percent of original size [2021-04-16 06:48:52,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:48:52,856 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.8 percent of original size [2021-04-16 06:48:52,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:48:52,908 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:48:52,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:48:52,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:48:52,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:53,004 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:48:53,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:53,040 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:48:53,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:48:53,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:48:53,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:53,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:53,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:53,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:53,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:53,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921350817] [2021-04-16 06:48:53,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:53,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-04-16 06:48:53,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227847226] [2021-04-16 06:48:53,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-04-16 06:48:53,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:53,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-04-16 06:48:53,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:48:53,219 INFO L87 Difference]: Start difference. First operand 1634 states and 1981 transitions. Second operand has 26 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:57,318 INFO L93 Difference]: Finished difference Result 1832 states and 2219 transitions. [2021-04-16 06:48:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-04-16 06:48:57,320 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-04-16 06:48:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:57,322 INFO L225 Difference]: With dead ends: 1832 [2021-04-16 06:48:57,323 INFO L226 Difference]: Without dead ends: 1830 [2021-04-16 06:48:57,323 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 1914.1ms TimeCoverageRelationStatistics Valid=268, Invalid=2282, Unknown=0, NotChecked=0, Total=2550 [2021-04-16 06:48:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2021-04-16 06:48:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1649. [2021-04-16 06:48:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1538 states have (on average 1.2022106631989598) internal successors, (1849), 1589 states have internal predecessors, (1849), 77 states have call successors, (77), 34 states have call predecessors, (77), 33 states have return successors, (75), 25 states have call predecessors, (75), 75 states have call successors, (75) [2021-04-16 06:48:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2001 transitions. [2021-04-16 06:48:58,227 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2001 transitions. Word has length 69 [2021-04-16 06:48:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:58,227 INFO L480 AbstractCegarLoop]: Abstraction has 1649 states and 2001 transitions. [2021-04-16 06:48:58,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2001 transitions. [2021-04-16 06:48:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:48:58,229 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:58,229 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:58,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-04-16 06:48:58,229 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:58,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:58,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1309954697, now seen corresponding path program 26 times [2021-04-16 06:48:58,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:58,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981851246] [2021-04-16 06:48:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:58,234 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:58,235 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:58,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:58,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:58,304 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:48:58,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:58,315 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:48:58,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:58,327 INFO L142 QuantifierPusher]: treesize reduction 46, result has 43.9 percent of original size [2021-04-16 06:48:58,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:48:58,354 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-04-16 06:48:58,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:58,378 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-04-16 06:48:58,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:58,404 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:48:58,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:48:58,424 INFO L142 QuantifierPusher]: treesize reduction 22, result has 51.1 percent of original size [2021-04-16 06:48:58,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:58,430 INFO L142 QuantifierPusher]: treesize reduction 31, result has 45.6 percent of original size [2021-04-16 06:48:58,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:58,443 INFO L142 QuantifierPusher]: treesize reduction 37, result has 47.9 percent of original size [2021-04-16 06:48:58,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:48:58,475 INFO L142 QuantifierPusher]: treesize reduction 39, result has 51.9 percent of original size [2021-04-16 06:48:58,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:48:58,520 INFO L142 QuantifierPusher]: treesize reduction 31, result has 58.1 percent of original size [2021-04-16 06:48:58,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:48:58,572 INFO L142 QuantifierPusher]: treesize reduction 33, result has 62.5 percent of original size [2021-04-16 06:48:58,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:48:58,629 INFO L142 QuantifierPusher]: treesize reduction 58, result has 59.7 percent of original size [2021-04-16 06:48:58,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 06:48:58,712 INFO L142 QuantifierPusher]: treesize reduction 50, result has 66.4 percent of original size [2021-04-16 06:48:58,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-04-16 06:48:58,786 INFO L142 QuantifierPusher]: treesize reduction 50, result has 66.0 percent of original size [2021-04-16 06:48:58,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:58,861 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.6 percent of original size [2021-04-16 06:48:58,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:48:58,912 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.6 percent of original size [2021-04-16 06:48:58,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:48:58,963 INFO L142 QuantifierPusher]: treesize reduction 44, result has 71.2 percent of original size [2021-04-16 06:48:58,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-04-16 06:48:59,066 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.6 percent of original size [2021-04-16 06:48:59,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:48:59,068 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size [2021-04-16 06:48:59,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:48:59,119 INFO L142 QuantifierPusher]: treesize reduction 33, result has 63.7 percent of original size [2021-04-16 06:48:59,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:48:59,177 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size [2021-04-16 06:48:59,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:48:59,179 INFO L142 QuantifierPusher]: treesize reduction 34, result has 54.7 percent of original size [2021-04-16 06:48:59,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:48:59,231 INFO L142 QuantifierPusher]: treesize reduction 33, result has 66.3 percent of original size [2021-04-16 06:48:59,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:48:59,290 INFO L142 QuantifierPusher]: treesize reduction 33, result has 63.3 percent of original size [2021-04-16 06:48:59,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:48:59,340 INFO L142 QuantifierPusher]: treesize reduction 37, result has 67.0 percent of original size [2021-04-16 06:48:59,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:48:59,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:48:59,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:59,463 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:48:59,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:48:59,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:59,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:48:59,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:59,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:59,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:59,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:59,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:59,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:59,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:59,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:59,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981851246] [2021-04-16 06:48:59,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:59,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:48:59,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989194972] [2021-04-16 06:48:59,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:48:59,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:59,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:48:59,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:48:59,673 INFO L87 Difference]: Start difference. First operand 1649 states and 2001 transitions. Second operand has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:06,379 INFO L93 Difference]: Finished difference Result 1934 states and 2350 transitions. [2021-04-16 06:49:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-04-16 06:49:06,383 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-04-16 06:49:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:06,386 INFO L225 Difference]: With dead ends: 1934 [2021-04-16 06:49:06,386 INFO L226 Difference]: Without dead ends: 1932 [2021-04-16 06:49:06,387 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 3280.6ms TimeCoverageRelationStatistics Valid=390, Invalid=3770, Unknown=0, NotChecked=0, Total=4160 [2021-04-16 06:49:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2021-04-16 06:49:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1680. [2021-04-16 06:49:07,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1566 states have (on average 1.2030651340996168) internal successors, (1884), 1619 states have internal predecessors, (1884), 79 states have call successors, (79), 35 states have call predecessors, (79), 34 states have return successors, (77), 25 states have call predecessors, (77), 77 states have call successors, (77) [2021-04-16 06:49:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2040 transitions. [2021-04-16 06:49:07,347 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2040 transitions. Word has length 69 [2021-04-16 06:49:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:07,347 INFO L480 AbstractCegarLoop]: Abstraction has 1680 states and 2040 transitions. [2021-04-16 06:49:07,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2040 transitions. [2021-04-16 06:49:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:49:07,349 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:07,349 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:07,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-04-16 06:49:07,349 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:07,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2085009899, now seen corresponding path program 27 times [2021-04-16 06:49:07,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:07,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677915536] [2021-04-16 06:49:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:07,361 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:07,362 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:07,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:07,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:07,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:07,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:07,474 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:49:07,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:07,485 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:49:07,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:07,498 INFO L142 QuantifierPusher]: treesize reduction 46, result has 43.9 percent of original size [2021-04-16 06:49:07,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:49:07,529 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-04-16 06:49:07,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:49:07,558 INFO L142 QuantifierPusher]: treesize reduction 20, result has 56.5 percent of original size [2021-04-16 06:49:07,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:49:07,586 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:49:07,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:49:07,610 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-04-16 06:49:07,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:07,617 INFO L142 QuantifierPusher]: treesize reduction 30, result has 59.5 percent of original size [2021-04-16 06:49:07,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:49:07,656 INFO L142 QuantifierPusher]: treesize reduction 30, result has 57.7 percent of original size [2021-04-16 06:49:07,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:49:07,674 INFO L142 QuantifierPusher]: treesize reduction 31, result has 55.1 percent of original size [2021-04-16 06:49:07,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:49:07,689 INFO L142 QuantifierPusher]: treesize reduction 36, result has 43.8 percent of original size [2021-04-16 06:49:07,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:49:07,696 INFO L142 QuantifierPusher]: treesize reduction 39, result has 45.8 percent of original size [2021-04-16 06:49:07,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:49:07,732 INFO L142 QuantifierPusher]: treesize reduction 39, result has 55.2 percent of original size [2021-04-16 06:49:07,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:49:07,782 INFO L142 QuantifierPusher]: treesize reduction 40, result has 56.5 percent of original size [2021-04-16 06:49:07,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:49:07,834 INFO L142 QuantifierPusher]: treesize reduction 42, result has 54.8 percent of original size [2021-04-16 06:49:07,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:49:07,883 INFO L142 QuantifierPusher]: treesize reduction 42, result has 60.7 percent of original size [2021-04-16 06:49:07,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:49:07,951 INFO L142 QuantifierPusher]: treesize reduction 63, result has 62.7 percent of original size [2021-04-16 06:49:07,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-04-16 06:49:08,046 INFO L142 QuantifierPusher]: treesize reduction 60, result has 66.1 percent of original size [2021-04-16 06:49:08,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-04-16 06:49:08,136 INFO L142 QuantifierPusher]: treesize reduction 60, result has 65.7 percent of original size [2021-04-16 06:49:08,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-04-16 06:49:08,217 INFO L142 QuantifierPusher]: treesize reduction 30, result has 66.3 percent of original size [2021-04-16 06:49:08,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:49:08,270 INFO L142 QuantifierPusher]: treesize reduction 31, result has 65.6 percent of original size [2021-04-16 06:49:08,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:49:08,323 INFO L142 QuantifierPusher]: treesize reduction 49, result has 71.5 percent of original size [2021-04-16 06:49:08,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-04-16 06:49:08,437 INFO L142 QuantifierPusher]: treesize reduction 14, result has 80.3 percent of original size [2021-04-16 06:49:08,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:49:08,494 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-04-16 06:49:08,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:49:08,545 INFO L142 QuantifierPusher]: treesize reduction 10, result has 79.6 percent of original size [2021-04-16 06:49:08,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:49:08,597 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.6 percent of original size [2021-04-16 06:49:08,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:49:08,659 INFO L142 QuantifierPusher]: treesize reduction 10, result has 79.6 percent of original size [2021-04-16 06:49:08,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:49:08,661 INFO L142 QuantifierPusher]: treesize reduction 11, result has 77.6 percent of original size [2021-04-16 06:49:08,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:49:08,718 INFO L142 QuantifierPusher]: treesize reduction 10, result has 86.1 percent of original size [2021-04-16 06:49:08,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:49:08,784 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:49:08,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:49:08,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:49:08,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:49:08,883 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:49:08,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:49:08,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:08,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:49:08,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:08,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:09,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:09,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:09,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:09,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:09,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677915536] [2021-04-16 06:49:09,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:09,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-04-16 06:49:09,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839453892] [2021-04-16 06:49:09,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-04-16 06:49:09,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:09,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-04-16 06:49:09,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2021-04-16 06:49:09,111 INFO L87 Difference]: Start difference. First operand 1680 states and 2040 transitions. Second operand has 34 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 32 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:15,908 INFO L93 Difference]: Finished difference Result 1940 states and 2355 transitions. [2021-04-16 06:49:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-04-16 06:49:15,910 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 32 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-04-16 06:49:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:15,913 INFO L225 Difference]: With dead ends: 1940 [2021-04-16 06:49:15,913 INFO L226 Difference]: Without dead ends: 1938 [2021-04-16 06:49:15,914 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 4040.0ms TimeCoverageRelationStatistics Valid=554, Invalid=5146, Unknown=0, NotChecked=0, Total=5700 [2021-04-16 06:49:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2021-04-16 06:49:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1722. [2021-04-16 06:49:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1608 states have (on average 1.2064676616915422) internal successors, (1940), 1661 states have internal predecessors, (1940), 79 states have call successors, (79), 35 states have call predecessors, (79), 34 states have return successors, (77), 25 states have call predecessors, (77), 77 states have call successors, (77) [2021-04-16 06:49:16,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2096 transitions. [2021-04-16 06:49:16,862 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2096 transitions. Word has length 69 [2021-04-16 06:49:16,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:16,862 INFO L480 AbstractCegarLoop]: Abstraction has 1722 states and 2096 transitions. [2021-04-16 06:49:16,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 32 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:16,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2096 transitions. [2021-04-16 06:49:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:49:16,864 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:16,864 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:16,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-04-16 06:49:16,864 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:16,864 INFO L82 PathProgramCache]: Analyzing trace with hash 898307121, now seen corresponding path program 28 times [2021-04-16 06:49:16,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:16,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383476642] [2021-04-16 06:49:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:16,869 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:16,870 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:16,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:16,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:16,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:16,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:16,949 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:49:16,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:16,963 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:49:16,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:16,982 INFO L142 QuantifierPusher]: treesize reduction 46, result has 43.9 percent of original size [2021-04-16 06:49:16,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:49:17,020 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-04-16 06:49:17,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:49:17,047 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-04-16 06:49:17,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:49:17,076 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:49:17,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:49:17,096 INFO L142 QuantifierPusher]: treesize reduction 22, result has 51.1 percent of original size [2021-04-16 06:49:17,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:17,103 INFO L142 QuantifierPusher]: treesize reduction 36, result has 41.9 percent of original size [2021-04-16 06:49:17,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:49:17,111 INFO L142 QuantifierPusher]: treesize reduction 48, result has 48.9 percent of original size [2021-04-16 06:49:17,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:49:17,153 INFO L142 QuantifierPusher]: treesize reduction 47, result has 47.2 percent of original size [2021-04-16 06:49:17,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:49:17,224 INFO L142 QuantifierPusher]: treesize reduction 41, result has 50.6 percent of original size [2021-04-16 06:49:17,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:49:17,280 INFO L142 QuantifierPusher]: treesize reduction 41, result has 57.7 percent of original size [2021-04-16 06:49:17,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:49:17,350 INFO L142 QuantifierPusher]: treesize reduction 67, result has 58.9 percent of original size [2021-04-16 06:49:17,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-04-16 06:49:17,461 INFO L142 QuantifierPusher]: treesize reduction 61, result has 64.1 percent of original size [2021-04-16 06:49:17,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-04-16 06:49:17,554 INFO L142 QuantifierPusher]: treesize reduction 61, result has 63.7 percent of original size [2021-04-16 06:49:17,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-04-16 06:49:17,640 INFO L142 QuantifierPusher]: treesize reduction 41, result has 55.4 percent of original size [2021-04-16 06:49:17,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:49:17,696 INFO L142 QuantifierPusher]: treesize reduction 42, result has 54.8 percent of original size [2021-04-16 06:49:17,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:49:17,777 INFO L142 QuantifierPusher]: treesize reduction 72, result has 60.0 percent of original size [2021-04-16 06:49:17,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-04-16 06:49:17,887 INFO L142 QuantifierPusher]: treesize reduction 38, result has 60.8 percent of original size [2021-04-16 06:49:17,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:49:17,951 INFO L142 QuantifierPusher]: treesize reduction 38, result has 53.1 percent of original size [2021-04-16 06:49:17,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:49:17,981 INFO L142 QuantifierPusher]: treesize reduction 38, result has 52.5 percent of original size [2021-04-16 06:49:17,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:49:18,033 INFO L142 QuantifierPusher]: treesize reduction 38, result has 64.5 percent of original size [2021-04-16 06:49:18,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:49:18,102 INFO L142 QuantifierPusher]: treesize reduction 49, result has 64.2 percent of original size [2021-04-16 06:49:18,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:49:18,199 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.8 percent of original size [2021-04-16 06:49:18,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:49:18,253 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:49:18,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:49:18,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:49:18,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:49:18,361 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:49:18,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:49:18,405 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:49:18,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:49:18,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:18,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:18,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:18,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:18,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:18,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:18,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:18,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:18,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:18,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:18,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:18,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383476642] [2021-04-16 06:49:18,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:18,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-04-16 06:49:18,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377806941] [2021-04-16 06:49:18,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-04-16 06:49:18,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:18,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-04-16 06:49:18,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2021-04-16 06:49:18,639 INFO L87 Difference]: Start difference. First operand 1722 states and 2096 transitions. Second operand has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:24,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:24,298 INFO L93 Difference]: Finished difference Result 1995 states and 2421 transitions. [2021-04-16 06:49:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-04-16 06:49:24,300 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-04-16 06:49:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:24,303 INFO L225 Difference]: With dead ends: 1995 [2021-04-16 06:49:24,303 INFO L226 Difference]: Without dead ends: 1993 [2021-04-16 06:49:24,303 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 3514.0ms TimeCoverageRelationStatistics Valid=430, Invalid=3602, Unknown=0, NotChecked=0, Total=4032 [2021-04-16 06:49:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2021-04-16 06:49:25,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1746. [2021-04-16 06:49:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1632 states have (on average 1.2083333333333333) internal successors, (1972), 1685 states have internal predecessors, (1972), 79 states have call successors, (79), 35 states have call predecessors, (79), 34 states have return successors, (77), 25 states have call predecessors, (77), 77 states have call successors, (77) [2021-04-16 06:49:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2128 transitions. [2021-04-16 06:49:25,260 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2128 transitions. Word has length 69 [2021-04-16 06:49:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:25,260 INFO L480 AbstractCegarLoop]: Abstraction has 1746 states and 2128 transitions. [2021-04-16 06:49:25,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:25,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2128 transitions. [2021-04-16 06:49:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-04-16 06:49:25,262 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:25,262 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:25,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-04-16 06:49:25,262 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:25,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1869063899, now seen corresponding path program 29 times [2021-04-16 06:49:25,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:25,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244016396] [2021-04-16 06:49:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:25,269 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:25,270 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:25,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:25,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:25,363 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-04-16 06:49:25,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:25,375 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:49:25,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:25,389 INFO L142 QuantifierPusher]: treesize reduction 46, result has 43.9 percent of original size [2021-04-16 06:49:25,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:49:25,420 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-04-16 06:49:25,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:49:25,448 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-04-16 06:49:25,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:49:25,478 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:49:25,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:49:25,503 INFO L142 QuantifierPusher]: treesize reduction 40, result has 41.2 percent of original size [2021-04-16 06:49:25,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:49:25,510 INFO L142 QuantifierPusher]: treesize reduction 43, result has 48.2 percent of original size [2021-04-16 06:49:25,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:49:25,547 INFO L142 QuantifierPusher]: treesize reduction 43, result has 51.7 percent of original size [2021-04-16 06:49:25,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:49:25,565 INFO L142 QuantifierPusher]: treesize reduction 43, result has 57.8 percent of original size [2021-04-16 06:49:25,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:49:25,625 INFO L142 QuantifierPusher]: treesize reduction 60, result has 57.4 percent of original size [2021-04-16 06:49:25,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:49:25,721 INFO L142 QuantifierPusher]: treesize reduction 60, result has 61.3 percent of original size [2021-04-16 06:49:25,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-04-16 06:49:25,809 INFO L142 QuantifierPusher]: treesize reduction 60, result has 60.5 percent of original size [2021-04-16 06:49:25,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:49:25,881 INFO L142 QuantifierPusher]: treesize reduction 36, result has 37.9 percent of original size [2021-04-16 06:49:25,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:49:25,916 INFO L142 QuantifierPusher]: treesize reduction 40, result has 59.6 percent of original size [2021-04-16 06:49:25,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:49:25,970 INFO L142 QuantifierPusher]: treesize reduction 40, result has 65.2 percent of original size [2021-04-16 06:49:25,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:49:26,044 INFO L142 QuantifierPusher]: treesize reduction 40, result has 59.6 percent of original size [2021-04-16 06:49:26,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:49:26,047 INFO L142 QuantifierPusher]: treesize reduction 41, result has 59.0 percent of original size [2021-04-16 06:49:26,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:49:26,109 INFO L142 QuantifierPusher]: treesize reduction 52, result has 70.6 percent of original size [2021-04-16 06:49:26,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-04-16 06:49:26,248 INFO L142 QuantifierPusher]: treesize reduction 41, result has 59.0 percent of original size [2021-04-16 06:49:26,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:49:26,250 INFO L142 QuantifierPusher]: treesize reduction 41, result has 58.6 percent of original size [2021-04-16 06:49:26,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:49:26,315 INFO L142 QuantifierPusher]: treesize reduction 41, result has 64.3 percent of original size [2021-04-16 06:49:26,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:49:26,405 INFO L142 QuantifierPusher]: treesize reduction 41, result has 58.6 percent of original size [2021-04-16 06:49:26,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:49:26,407 INFO L142 QuantifierPusher]: treesize reduction 42, result has 57.6 percent of original size [2021-04-16 06:49:26,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:49:26,471 INFO L142 QuantifierPusher]: treesize reduction 41, result has 66.4 percent of original size [2021-04-16 06:49:26,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:49:26,538 INFO L142 QuantifierPusher]: treesize reduction 41, result has 64.0 percent of original size [2021-04-16 06:49:26,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:49:26,613 INFO L142 QuantifierPusher]: treesize reduction 60, result has 62.3 percent of original size [2021-04-16 06:49:26,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-04-16 06:49:26,714 INFO L142 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-04-16 06:49:26,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:49:26,764 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:49:26,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:49:26,822 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-04-16 06:49:26,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:49:26,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:26,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:49:26,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:26,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:26,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:26,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:27,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:27,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:27,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:27,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:27,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:27,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244016396] [2021-04-16 06:49:27,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:27,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-04-16 06:49:27,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170877033] [2021-04-16 06:49:27,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-04-16 06:49:27,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:27,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-04-16 06:49:27,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2021-04-16 06:49:27,090 INFO L87 Difference]: Start difference. First operand 1746 states and 2128 transitions. Second operand has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:33,060 INFO L93 Difference]: Finished difference Result 2057 states and 2504 transitions. [2021-04-16 06:49:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-04-16 06:49:33,062 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-04-16 06:49:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:33,065 INFO L225 Difference]: With dead ends: 2057 [2021-04-16 06:49:33,065 INFO L226 Difference]: Without dead ends: 2055 [2021-04-16 06:49:33,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 3145.6ms TimeCoverageRelationStatistics Valid=343, Invalid=3317, Unknown=0, NotChecked=0, Total=3660 [2021-04-16 06:49:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2021-04-16 06:49:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 1756. [2021-04-16 06:49:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1640 states have (on average 1.2085365853658536) internal successors, (1982), 1694 states have internal predecessors, (1982), 80 states have call successors, (80), 36 states have call predecessors, (80), 35 states have return successors, (78), 25 states have call predecessors, (78), 78 states have call successors, (78) [2021-04-16 06:49:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2140 transitions. [2021-04-16 06:49:34,067 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2140 transitions. Word has length 69 [2021-04-16 06:49:34,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:34,067 INFO L480 AbstractCegarLoop]: Abstraction has 1756 states and 2140 transitions. [2021-04-16 06:49:34,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:34,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2140 transitions. [2021-04-16 06:49:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:49:34,072 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:34,072 INFO L519 BasicCegarLoop]: trace histogram [8, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:34,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-04-16 06:49:34,072 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:34,072 INFO L82 PathProgramCache]: Analyzing trace with hash -306682746, now seen corresponding path program 14 times [2021-04-16 06:49:34,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:34,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864487292] [2021-04-16 06:49:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:34,078 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:34,079 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:34,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:34,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:34,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:34,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:34,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:34,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:34,158 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:49:34,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:49:34,195 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-04-16 06:49:34,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:49:34,202 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:49:34,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:49:34,231 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-04-16 06:49:34,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:49:34,240 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:49:34,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:49:34,264 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-04-16 06:49:34,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:49:34,281 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-04-16 06:49:34,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:34,288 INFO L142 QuantifierPusher]: treesize reduction 28, result has 75.2 percent of original size [2021-04-16 06:49:34,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-04-16 06:49:34,332 INFO L142 QuantifierPusher]: treesize reduction 28, result has 75.9 percent of original size [2021-04-16 06:49:34,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:49:34,381 INFO L142 QuantifierPusher]: treesize reduction 30, result has 72.2 percent of original size [2021-04-16 06:49:34,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:49:34,445 INFO L142 QuantifierPusher]: treesize reduction 30, result has 72.0 percent of original size [2021-04-16 06:49:34,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:49:34,505 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.7 percent of original size [2021-04-16 06:49:34,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:49:34,545 INFO L142 QuantifierPusher]: treesize reduction 61, result has 44.5 percent of original size [2021-04-16 06:49:34,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:49:34,593 INFO L142 QuantifierPusher]: treesize reduction 61, result has 56.1 percent of original size [2021-04-16 06:49:34,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:49:34,672 INFO L142 QuantifierPusher]: treesize reduction 69, result has 58.4 percent of original size [2021-04-16 06:49:34,674 INFO L147 QuantifierPusher]: treesize reduction 7, result has 92.8 percent of original size 90 [2021-04-16 06:49:34,763 INFO L142 QuantifierPusher]: treesize reduction 76, result has 58.9 percent of original size [2021-04-16 06:49:34,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-04-16 06:49:34,854 INFO L142 QuantifierPusher]: treesize reduction 76, result has 58.2 percent of original size [2021-04-16 06:49:34,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-04-16 06:49:34,942 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.3 percent of original size [2021-04-16 06:49:34,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:49:35,020 INFO L142 QuantifierPusher]: treesize reduction 35, result has 66.7 percent of original size [2021-04-16 06:49:35,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:49:35,103 INFO L142 QuantifierPusher]: treesize reduction 37, result has 64.4 percent of original size [2021-04-16 06:49:35,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:49:35,172 INFO L142 QuantifierPusher]: treesize reduction 37, result has 58.0 percent of original size [2021-04-16 06:49:35,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:49:35,238 INFO L142 QuantifierPusher]: treesize reduction 38, result has 57.8 percent of original size [2021-04-16 06:49:35,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:49:35,304 INFO L142 QuantifierPusher]: treesize reduction 87, result has 46.3 percent of original size [2021-04-16 06:49:35,306 INFO L147 QuantifierPusher]: treesize reduction 7, result has 90.7 percent of original size 68 [2021-04-16 06:49:35,379 INFO L142 QuantifierPusher]: treesize reduction 30, result has 63.0 percent of original size [2021-04-16 06:49:35,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:49:35,455 INFO L142 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-04-16 06:49:35,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:49:35,519 INFO L142 QuantifierPusher]: treesize reduction 19, result has 74.3 percent of original size [2021-04-16 06:49:35,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:49:35,594 INFO L142 QuantifierPusher]: treesize reduction 19, result has 73.2 percent of original size [2021-04-16 06:49:35,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:49:35,662 INFO L142 QuantifierPusher]: treesize reduction 18, result has 77.2 percent of original size [2021-04-16 06:49:35,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:49:35,756 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.2 percent of original size [2021-04-16 06:49:35,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:49:35,847 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.0 percent of original size [2021-04-16 06:49:35,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:49:35,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:49:35,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:49:35,981 INFO L142 QuantifierPusher]: treesize reduction 21, result has 48.8 percent of original size [2021-04-16 06:49:35,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:49:36,050 INFO L142 QuantifierPusher]: treesize reduction 19, result has 56.8 percent of original size [2021-04-16 06:49:36,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:49:36,124 INFO L142 QuantifierPusher]: treesize reduction 20, result has 58.3 percent of original size [2021-04-16 06:49:36,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:49:36,196 INFO L142 QuantifierPusher]: treesize reduction 19, result has 56.8 percent of original size [2021-04-16 06:49:36,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:49:36,198 INFO L142 QuantifierPusher]: treesize reduction 26, result has 68.3 percent of original size [2021-04-16 06:49:36,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:49:36,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:36,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:36,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:36,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:36,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:36,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:36,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:36,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:36,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:36,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:36,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:36,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-04-16 06:49:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:36,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:36,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:36,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-04-16 06:49:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:36,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:36,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:36,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864487292] [2021-04-16 06:49:36,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:36,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-04-16 06:49:36,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672030586] [2021-04-16 06:49:36,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-04-16 06:49:36,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:36,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-04-16 06:49:36,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2021-04-16 06:49:36,520 INFO L87 Difference]: Start difference. First operand 1756 states and 2140 transitions. Second operand has 39 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 37 states have internal predecessors, (61), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:49:37,941 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2021-04-16 06:49:38,249 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-04-16 06:49:39,254 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-04-16 06:49:42,270 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-04-16 06:49:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:46,980 INFO L93 Difference]: Finished difference Result 2069 states and 2518 transitions. [2021-04-16 06:49:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-04-16 06:49:46,983 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 37 states have internal predecessors, (61), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2021-04-16 06:49:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:46,985 INFO L225 Difference]: With dead ends: 2069 [2021-04-16 06:49:46,985 INFO L226 Difference]: Without dead ends: 2026 [2021-04-16 06:49:46,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3661 ImplicationChecksByTransitivity, 7869.5ms TimeCoverageRelationStatistics Valid=1077, Invalid=10053, Unknown=0, NotChecked=0, Total=11130 [2021-04-16 06:49:46,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-04-16 06:49:47,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1770. [2021-04-16 06:49:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1652 states have (on average 1.210048426150121) internal successors, (1999), 1706 states have internal predecessors, (1999), 82 states have call successors, (82), 36 states have call predecessors, (82), 35 states have return successors, (80), 27 states have call predecessors, (80), 80 states have call successors, (80) [2021-04-16 06:49:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2161 transitions. [2021-04-16 06:49:47,995 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2161 transitions. Word has length 72 [2021-04-16 06:49:47,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:47,995 INFO L480 AbstractCegarLoop]: Abstraction has 1770 states and 2161 transitions. [2021-04-16 06:49:47,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 37 states have internal predecessors, (61), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:49:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2161 transitions. [2021-04-16 06:49:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:49:47,996 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:47,996 INFO L519 BasicCegarLoop]: trace histogram [8, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:47,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-04-16 06:49:47,997 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:47,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:47,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1475670698, now seen corresponding path program 15 times [2021-04-16 06:49:47,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:47,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140911267] [2021-04-16 06:49:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:48,002 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:48,003 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:48,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:48,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:48,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:48,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:48,078 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:49:48,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:49:48,113 INFO L142 QuantifierPusher]: treesize reduction 22, result has 45.0 percent of original size [2021-04-16 06:49:48,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:49:48,142 INFO L142 QuantifierPusher]: treesize reduction 23, result has 11.5 percent of original size [2021-04-16 06:49:48,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:48,152 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-04-16 06:49:48,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:48,158 INFO L142 QuantifierPusher]: treesize reduction 24, result has 53.8 percent of original size [2021-04-16 06:49:48,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:49:48,200 INFO L142 QuantifierPusher]: treesize reduction 26, result has 51.9 percent of original size [2021-04-16 06:49:48,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:49:48,245 INFO L142 QuantifierPusher]: treesize reduction 26, result has 61.2 percent of original size [2021-04-16 06:49:48,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:49:48,309 INFO L142 QuantifierPusher]: treesize reduction 47, result has 58.0 percent of original size [2021-04-16 06:49:48,310 INFO L147 QuantifierPusher]: treesize reduction 8, result has 87.7 percent of original size 57 [2021-04-16 06:49:48,391 INFO L142 QuantifierPusher]: treesize reduction 45, result has 64.6 percent of original size [2021-04-16 06:49:48,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:49:48,518 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-04-16 06:49:48,520 INFO L142 QuantifierPusher]: treesize reduction 45, result has 64.3 percent of original size [2021-04-16 06:49:48,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:49:48,634 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-04-16 06:49:48,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:49:48,662 INFO L142 QuantifierPusher]: treesize reduction 35, result has 55.1 percent of original size [2021-04-16 06:49:48,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:49:48,710 INFO L142 QuantifierPusher]: treesize reduction 38, result has 67.5 percent of original size [2021-04-16 06:49:48,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:49:48,785 INFO L142 QuantifierPusher]: treesize reduction 32, result has 77.5 percent of original size [2021-04-16 06:49:48,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-04-16 06:49:48,874 INFO L142 QuantifierPusher]: treesize reduction 53, result has 66.9 percent of original size [2021-04-16 06:49:48,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-04-16 06:49:48,951 INFO L142 QuantifierPusher]: treesize reduction 53, result has 66.2 percent of original size [2021-04-16 06:49:48,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-04-16 06:49:49,018 INFO L142 QuantifierPusher]: treesize reduction 49, result has 61.7 percent of original size [2021-04-16 06:49:49,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:49:49,110 INFO L142 QuantifierPusher]: treesize reduction 49, result has 65.7 percent of original size [2021-04-16 06:49:49,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:49:49,218 INFO L142 QuantifierPusher]: treesize reduction 49, result has 65.5 percent of original size [2021-04-16 06:49:49,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:49:49,291 INFO L142 QuantifierPusher]: treesize reduction 41, result has 47.4 percent of original size [2021-04-16 06:49:49,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:49:49,352 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-04-16 06:49:49,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:49:49,409 INFO L142 QuantifierPusher]: treesize reduction 83, result has 45.0 percent of original size [2021-04-16 06:49:49,410 INFO L147 QuantifierPusher]: treesize reduction 7, result has 89.7 percent of original size 61 [2021-04-16 06:49:49,491 INFO L142 QuantifierPusher]: treesize reduction 83, result has 45.0 percent of original size [2021-04-16 06:49:49,492 INFO L147 QuantifierPusher]: treesize reduction 7, result has 89.7 percent of original size 61 [2021-04-16 06:49:49,493 INFO L142 QuantifierPusher]: treesize reduction 35, result has 56.3 percent of original size [2021-04-16 06:49:49,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:49:49,561 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-04-16 06:49:49,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:49:49,621 INFO L142 QuantifierPusher]: treesize reduction 8, result has 82.6 percent of original size [2021-04-16 06:49:49,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:49:49,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:49:49,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:49:49,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:49:49,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:49:49,781 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:49:49,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:49:49,838 INFO L142 QuantifierPusher]: treesize reduction 19, result has 58.7 percent of original size [2021-04-16 06:49:49,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:49:49,902 INFO L142 QuantifierPusher]: treesize reduction 26, result has 69.0 percent of original size [2021-04-16 06:49:49,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:49:49,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:49,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:49:50,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:50,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:50,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:50,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:50,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-04-16 06:49:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:50,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-04-16 06:49:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:50,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:50,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140911267] [2021-04-16 06:49:50,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:50,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-04-16 06:49:50,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791753139] [2021-04-16 06:49:50,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-04-16 06:49:50,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:50,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-04-16 06:49:50,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2021-04-16 06:49:50,191 INFO L87 Difference]: Start difference. First operand 1770 states and 2161 transitions. Second operand has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 34 states have internal predecessors, (61), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:49:51,558 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-04-16 06:49:52,020 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-04-16 06:49:52,566 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-04-16 06:49:52,875 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-04-16 06:49:53,089 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-04-16 06:49:53,344 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2021-04-16 06:49:55,628 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-04-16 06:49:56,036 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-04-16 06:49:58,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:58,086 INFO L93 Difference]: Finished difference Result 1836 states and 2238 transitions. [2021-04-16 06:49:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-04-16 06:49:58,089 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 34 states have internal predecessors, (61), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2021-04-16 06:49:58,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:58,092 INFO L225 Difference]: With dead ends: 1836 [2021-04-16 06:49:58,092 INFO L226 Difference]: Without dead ends: 1812 [2021-04-16 06:49:58,092 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1443 ImplicationChecksByTransitivity, 5655.6ms TimeCoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2021-04-16 06:49:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-04-16 06:49:59,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1746. [2021-04-16 06:49:59,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1632 states have (on average 1.2107843137254901) internal successors, (1976), 1685 states have internal predecessors, (1976), 80 states have call successors, (80), 34 states have call predecessors, (80), 33 states have return successors, (78), 26 states have call predecessors, (78), 78 states have call successors, (78) [2021-04-16 06:49:59,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2134 transitions. [2021-04-16 06:49:59,097 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2134 transitions. Word has length 72 [2021-04-16 06:49:59,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:59,097 INFO L480 AbstractCegarLoop]: Abstraction has 1746 states and 2134 transitions. [2021-04-16 06:49:59,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 34 states have internal predecessors, (61), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:49:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2134 transitions. [2021-04-16 06:49:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-04-16 06:49:59,099 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:59,099 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:59,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-04-16 06:49:59,099 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:59,099 INFO L82 PathProgramCache]: Analyzing trace with hash -501669198, now seen corresponding path program 7 times [2021-04-16 06:49:59,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:59,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004841648] [2021-04-16 06:49:59,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:59,106 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:59,107 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:59,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:59,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:59,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:59,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:59,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:59,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:59,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:59,231 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:49:59,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:59,237 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-04-16 06:49:59,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:49:59,246 INFO L142 QuantifierPusher]: treesize reduction 53, result has 22.1 percent of original size [2021-04-16 06:49:59,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:49:59,257 INFO L142 QuantifierPusher]: treesize reduction 72, result has 43.8 percent of original size [2021-04-16 06:49:59,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:49:59,338 INFO L142 QuantifierPusher]: treesize reduction 63, result has 19.2 percent of original size [2021-04-16 06:49:59,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:49:59,349 INFO L142 QuantifierPusher]: treesize reduction 24, result has 57.9 percent of original size [2021-04-16 06:49:59,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:49:59,362 INFO L142 QuantifierPusher]: treesize reduction 32, result has 69.5 percent of original size [2021-04-16 06:49:59,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:49:59,431 INFO L142 QuantifierPusher]: treesize reduction 30, result has 65.9 percent of original size [2021-04-16 06:49:59,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:49:59,502 INFO L142 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-04-16 06:49:59,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:49:59,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:49:59,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:49:59,601 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-04-16 06:49:59,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:49:59,638 INFO L142 QuantifierPusher]: treesize reduction 25, result has 51.0 percent of original size [2021-04-16 06:49:59,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:49:59,680 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.0 percent of original size [2021-04-16 06:49:59,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:49:59,763 INFO L142 QuantifierPusher]: treesize reduction 37, result has 63.4 percent of original size [2021-04-16 06:49:59,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:49:59,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:59,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:59,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:59,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:59,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:59,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:59,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-04-16 06:49:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:59,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:59,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-04-16 06:49:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:59,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:59,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-04-16 06:49:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:59,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:59,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004841648] [2021-04-16 06:49:59,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:59,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:50:00,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606099557] [2021-04-16 06:50:00,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:50:00,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:00,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:50:00,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:50:00,000 INFO L87 Difference]: Start difference. First operand 1746 states and 2134 transitions. Second operand has 21 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 06:50:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:03,845 INFO L93 Difference]: Finished difference Result 1868 states and 2280 transitions. [2021-04-16 06:50:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-04-16 06:50:03,848 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 73 [2021-04-16 06:50:03,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:03,851 INFO L225 Difference]: With dead ends: 1868 [2021-04-16 06:50:03,851 INFO L226 Difference]: Without dead ends: 1866 [2021-04-16 06:50:03,852 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1607.6ms TimeCoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2021-04-16 06:50:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-04-16 06:50:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1847. [2021-04-16 06:50:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1709 states have (on average 1.2012873025160913) internal successors, (2053), 1772 states have internal predecessors, (2053), 103 states have call successors, (103), 35 states have call predecessors, (103), 34 states have return successors, (101), 39 states have call predecessors, (101), 101 states have call successors, (101) [2021-04-16 06:50:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2257 transitions. [2021-04-16 06:50:05,150 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2257 transitions. Word has length 73 [2021-04-16 06:50:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:05,150 INFO L480 AbstractCegarLoop]: Abstraction has 1847 states and 2257 transitions. [2021-04-16 06:50:05,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 19 states have internal predecessors, (57), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 06:50:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2257 transitions. [2021-04-16 06:50:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-04-16 06:50:05,153 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:05,153 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:05,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-04-16 06:50:05,153 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:05,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:05,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1791898001, now seen corresponding path program 19 times [2021-04-16 06:50:05,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:05,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955525750] [2021-04-16 06:50:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:05,173 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:05,178 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:05,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:05,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:05,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:05,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:05,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:05,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:05,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:05,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:05,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:05,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:05,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:05,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:05,287 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:50:05,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:05,297 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-04-16 06:50:05,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:50:05,335 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-04-16 06:50:05,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:50:05,422 INFO L142 QuantifierPusher]: treesize reduction 11, result has 76.6 percent of original size [2021-04-16 06:50:05,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:50:05,481 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:50:05,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:50:05,531 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:50:05,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:50:05,576 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size [2021-04-16 06:50:05,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:50:05,634 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:50:05,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:50:05,637 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:50:05,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:50:05,682 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size [2021-04-16 06:50:05,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:50:05,747 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:50:05,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:50:05,750 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-04-16 06:50:05,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:50:05,804 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.5 percent of original size [2021-04-16 06:50:05,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:50:05,895 INFO L142 QuantifierPusher]: treesize reduction 5, result has 92.2 percent of original size [2021-04-16 06:50:05,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:50:05,984 INFO L142 QuantifierPusher]: treesize reduction 4, result has 88.6 percent of original size [2021-04-16 06:50:05,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:50:06,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:06,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:50:06,122 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-04-16 06:50:06,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:50:06,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:06,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:50:06,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:06,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:06,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:06,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:50:06,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:06,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:50:06,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:06,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:06,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:06,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:06,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:06,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-04-16 06:50:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:06,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:06,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:06,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955525750] [2021-04-16 06:50:06,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:06,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:50:06,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877593423] [2021-04-16 06:50:06,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:50:06,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:06,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:50:06,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:50:06,514 INFO L87 Difference]: Start difference. First operand 1847 states and 2257 transitions. Second operand has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:50:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:14,181 INFO L93 Difference]: Finished difference Result 2033 states and 2482 transitions. [2021-04-16 06:50:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-04-16 06:50:14,184 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2021-04-16 06:50:14,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:14,187 INFO L225 Difference]: With dead ends: 2033 [2021-04-16 06:50:14,187 INFO L226 Difference]: Without dead ends: 2031 [2021-04-16 06:50:14,188 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 3855.1ms TimeCoverageRelationStatistics Valid=278, Invalid=2914, Unknown=0, NotChecked=0, Total=3192 [2021-04-16 06:50:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-04-16 06:50:15,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1880. [2021-04-16 06:50:15,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1737 states have (on average 1.2003454231433506) internal successors, (2085), 1802 states have internal predecessors, (2085), 107 states have call successors, (107), 36 states have call predecessors, (107), 35 states have return successors, (105), 41 states have call predecessors, (105), 105 states have call successors, (105) [2021-04-16 06:50:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2297 transitions. [2021-04-16 06:50:15,476 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2297 transitions. Word has length 71 [2021-04-16 06:50:15,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:15,477 INFO L480 AbstractCegarLoop]: Abstraction has 1880 states and 2297 transitions. [2021-04-16 06:50:15,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:50:15,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2297 transitions. [2021-04-16 06:50:15,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-04-16 06:50:15,478 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:15,478 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:15,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-04-16 06:50:15,479 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:15,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:15,479 INFO L82 PathProgramCache]: Analyzing trace with hash 952313571, now seen corresponding path program 20 times [2021-04-16 06:50:15,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:15,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452988422] [2021-04-16 06:50:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:15,488 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:15,489 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:15,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:15,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:15,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:15,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:15,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:15,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:15,595 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:50:15,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:15,603 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-04-16 06:50:15,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:50:15,644 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-04-16 06:50:15,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:50:15,647 INFO L142 QuantifierPusher]: treesize reduction 20, result has 20.0 percent of original size [2021-04-16 06:50:15,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:15,657 INFO L142 QuantifierPusher]: treesize reduction 21, result has 19.2 percent of original size [2021-04-16 06:50:15,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:15,670 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-04-16 06:50:15,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:50:15,693 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-04-16 06:50:15,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:50:15,719 INFO L142 QuantifierPusher]: treesize reduction 14, result has 64.1 percent of original size [2021-04-16 06:50:15,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:50:15,780 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-04-16 06:50:15,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:50:15,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:50:15,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:50:15,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:50:15,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:50:15,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:50:15,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:15,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:50:16,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:16,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:50:16,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:16,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:50:16,141 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-04-16 06:50:16,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:50:16,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:16,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:50:16,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:16,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:16,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:16,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:50:16,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:16,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:50:16,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:16,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:16,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:16,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:16,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-04-16 06:50:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:16,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:16,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:16,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452988422] [2021-04-16 06:50:16,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:16,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:50:16,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440177179] [2021-04-16 06:50:16,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:50:16,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:16,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:50:16,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:50:16,520 INFO L87 Difference]: Start difference. First operand 1880 states and 2297 transitions. Second operand has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:50:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:22,068 INFO L93 Difference]: Finished difference Result 2018 states and 2464 transitions. [2021-04-16 06:50:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-04-16 06:50:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2021-04-16 06:50:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:22,077 INFO L225 Difference]: With dead ends: 2018 [2021-04-16 06:50:22,078 INFO L226 Difference]: Without dead ends: 2016 [2021-04-16 06:50:22,078 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 2297.0ms TimeCoverageRelationStatistics Valid=237, Invalid=1655, Unknown=0, NotChecked=0, Total=1892 [2021-04-16 06:50:22,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-04-16 06:50:23,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1918. [2021-04-16 06:50:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1918 states, 1771 states have (on average 1.2004517221908526) internal successors, (2126), 1838 states have internal predecessors, (2126), 110 states have call successors, (110), 37 states have call predecessors, (110), 36 states have return successors, (108), 42 states have call predecessors, (108), 108 states have call successors, (108) [2021-04-16 06:50:23,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2344 transitions. [2021-04-16 06:50:23,356 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2344 transitions. Word has length 71 [2021-04-16 06:50:23,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:23,356 INFO L480 AbstractCegarLoop]: Abstraction has 1918 states and 2344 transitions. [2021-04-16 06:50:23,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:50:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2344 transitions. [2021-04-16 06:50:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-04-16 06:50:23,358 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:23,358 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:23,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-04-16 06:50:23,358 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:23,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:23,358 INFO L82 PathProgramCache]: Analyzing trace with hash -945381923, now seen corresponding path program 21 times [2021-04-16 06:50:23,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:23,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286708520] [2021-04-16 06:50:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:23,366 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:23,367 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:23,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:23,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:23,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:23,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:23,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:23,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:23,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:23,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:23,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:23,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:23,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:23,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:23,485 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-04-16 06:50:23,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:50:23,518 INFO L142 QuantifierPusher]: treesize reduction 10, result has 54.5 percent of original size [2021-04-16 06:50:23,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:50:23,549 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-04-16 06:50:23,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:50:23,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:23,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:23,586 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:50:23,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:23,597 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-04-16 06:50:23,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:50:23,638 INFO L142 QuantifierPusher]: treesize reduction 11, result has 79.2 percent of original size [2021-04-16 06:50:23,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:50:23,714 INFO L142 QuantifierPusher]: treesize reduction 14, result has 72.5 percent of original size [2021-04-16 06:50:23,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:50:23,789 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.5 percent of original size [2021-04-16 06:50:23,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:50:23,835 INFO L142 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-04-16 06:50:23,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:50:23,878 INFO L142 QuantifierPusher]: treesize reduction 4, result has 91.1 percent of original size [2021-04-16 06:50:23,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:50:23,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:23,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:23,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:24,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:50:24,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:24,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:24,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:50:24,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:50:24,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:50:24,340 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size [2021-04-16 06:50:24,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:24,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:50:24,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:24,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:50:24,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:50:24,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:24,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:24,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:24,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-04-16 06:50:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:24,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:24,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:24,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286708520] [2021-04-16 06:50:24,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:24,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-04-16 06:50:24,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724457584] [2021-04-16 06:50:24,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-04-16 06:50:24,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:24,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-04-16 06:50:24,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:50:24,721 INFO L87 Difference]: Start difference. First operand 1918 states and 2344 transitions. Second operand has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 25 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:50:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:29,963 INFO L93 Difference]: Finished difference Result 1991 states and 2430 transitions. [2021-04-16 06:50:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-04-16 06:50:29,967 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 25 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2021-04-16 06:50:29,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:29,969 INFO L225 Difference]: With dead ends: 1991 [2021-04-16 06:50:29,969 INFO L226 Difference]: Without dead ends: 1989 [2021-04-16 06:50:29,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 2454.3ms TimeCoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2021-04-16 06:50:29,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2021-04-16 06:50:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1941. [2021-04-16 06:50:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1792 states have (on average 1.2008928571428572) internal successors, (2152), 1859 states have internal predecessors, (2152), 110 states have call successors, (110), 39 states have call predecessors, (110), 38 states have return successors, (108), 42 states have call predecessors, (108), 108 states have call successors, (108) [2021-04-16 06:50:31,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2370 transitions. [2021-04-16 06:50:31,242 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2370 transitions. Word has length 71 [2021-04-16 06:50:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:31,242 INFO L480 AbstractCegarLoop]: Abstraction has 1941 states and 2370 transitions. [2021-04-16 06:50:31,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 25 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:50:31,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2370 transitions. [2021-04-16 06:50:31,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-04-16 06:50:31,244 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:31,244 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:31,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-04-16 06:50:31,244 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:31,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:31,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1767419357, now seen corresponding path program 22 times [2021-04-16 06:50:31,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:31,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104346428] [2021-04-16 06:50:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:31,253 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:31,253 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:31,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:31,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:31,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:31,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:31,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:31,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:31,353 INFO L142 QuantifierPusher]: treesize reduction 20, result has 20.0 percent of original size [2021-04-16 06:50:31,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:31,365 INFO L142 QuantifierPusher]: treesize reduction 19, result has 36.7 percent of original size [2021-04-16 06:50:31,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:50:31,390 INFO L142 QuantifierPusher]: treesize reduction 19, result has 58.7 percent of original size [2021-04-16 06:50:31,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:50:31,436 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-04-16 06:50:31,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:50:31,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:31,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:31,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:50:31,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:31,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:31,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:50:31,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:50:31,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:31,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:31,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:50:31,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:50:31,918 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-04-16 06:50:31,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:50:31,980 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-04-16 06:50:31,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:50:32,053 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-04-16 06:50:32,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:50:32,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:32,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:50:32,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:32,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:50:32,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:32,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:50:32,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:32,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:50:32,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:32,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:32,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:32,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:32,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:32,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-04-16 06:50:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:32,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:32,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:32,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104346428] [2021-04-16 06:50:32,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:32,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:50:32,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307927529] [2021-04-16 06:50:32,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:50:32,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:32,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:50:32,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:50:32,326 INFO L87 Difference]: Start difference. First operand 1941 states and 2370 transitions. Second operand has 24 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:50:35,513 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-04-16 06:50:37,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:37,956 INFO L93 Difference]: Finished difference Result 2051 states and 2503 transitions. [2021-04-16 06:50:37,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-04-16 06:50:37,960 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2021-04-16 06:50:37,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:37,962 INFO L225 Difference]: With dead ends: 2051 [2021-04-16 06:50:37,962 INFO L226 Difference]: Without dead ends: 2049 [2021-04-16 06:50:37,963 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 2633.5ms TimeCoverageRelationStatistics Valid=296, Invalid=1596, Unknown=0, NotChecked=0, Total=1892 [2021-04-16 06:50:37,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2021-04-16 06:50:39,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1952. [2021-04-16 06:50:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1800 states have (on average 1.1994444444444445) internal successors, (2159), 1868 states have internal predecessors, (2159), 112 states have call successors, (112), 40 states have call predecessors, (112), 39 states have return successors, (110), 43 states have call predecessors, (110), 110 states have call successors, (110) [2021-04-16 06:50:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2381 transitions. [2021-04-16 06:50:39,354 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2381 transitions. Word has length 71 [2021-04-16 06:50:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:39,354 INFO L480 AbstractCegarLoop]: Abstraction has 1952 states and 2381 transitions. [2021-04-16 06:50:39,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:50:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2381 transitions. [2021-04-16 06:50:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:50:39,356 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:39,356 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:39,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-04-16 06:50:39,356 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:39,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:39,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1824795895, now seen corresponding path program 16 times [2021-04-16 06:50:39,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:39,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213962190] [2021-04-16 06:50:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:39,366 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:39,375 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:39,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:39,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:39,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:39,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:39,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:39,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:39,511 INFO L142 QuantifierPusher]: treesize reduction 12, result has 72.7 percent of original size [2021-04-16 06:50:39,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:50:39,549 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-04-16 06:50:39,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:50:39,558 INFO L142 QuantifierPusher]: treesize reduction 12, result has 76.9 percent of original size [2021-04-16 06:50:39,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:50:39,600 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-04-16 06:50:39,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:50:39,614 INFO L142 QuantifierPusher]: treesize reduction 50, result has 58.0 percent of original size [2021-04-16 06:50:39,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:50:39,675 INFO L142 QuantifierPusher]: treesize reduction 48, result has 56.8 percent of original size [2021-04-16 06:50:39,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:50:39,695 INFO L142 QuantifierPusher]: treesize reduction 28, result has 46.2 percent of original size [2021-04-16 06:50:39,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:39,740 INFO L142 QuantifierPusher]: treesize reduction 26, result has 40.9 percent of original size [2021-04-16 06:50:39,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:50:39,758 INFO L142 QuantifierPusher]: treesize reduction 23, result has 11.5 percent of original size [2021-04-16 06:50:39,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:39,779 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-04-16 06:50:39,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:39,788 INFO L142 QuantifierPusher]: treesize reduction 44, result has 42.1 percent of original size [2021-04-16 06:50:39,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:50:39,867 INFO L142 QuantifierPusher]: treesize reduction 39, result has 42.6 percent of original size [2021-04-16 06:50:39,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:50:39,959 INFO L142 QuantifierPusher]: treesize reduction 39, result has 39.1 percent of original size [2021-04-16 06:50:39,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:50:40,020 INFO L142 QuantifierPusher]: treesize reduction 41, result has 22.6 percent of original size [2021-04-16 06:50:40,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:50:40,030 INFO L142 QuantifierPusher]: treesize reduction 50, result has 40.5 percent of original size [2021-04-16 06:50:40,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:50:40,105 INFO L142 QuantifierPusher]: treesize reduction 45, result has 48.3 percent of original size [2021-04-16 06:50:40,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:50:40,190 INFO L142 QuantifierPusher]: treesize reduction 82, result has 48.8 percent of original size [2021-04-16 06:50:40,191 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-04-16 06:50:40,305 INFO L142 QuantifierPusher]: treesize reduction 79, result has 53.3 percent of original size [2021-04-16 06:50:40,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-04-16 06:50:40,428 INFO L142 QuantifierPusher]: treesize reduction 79, result has 62.0 percent of original size [2021-04-16 06:50:40,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-04-16 06:50:40,584 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 26 [2021-04-16 06:50:40,587 INFO L142 QuantifierPusher]: treesize reduction 79, result has 61.8 percent of original size [2021-04-16 06:50:40,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-04-16 06:50:40,732 INFO L142 QuantifierPusher]: treesize reduction 42, result has 59.6 percent of original size [2021-04-16 06:50:40,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:50:40,850 INFO L142 QuantifierPusher]: treesize reduction 44, result has 58.5 percent of original size [2021-04-16 06:50:40,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:50:40,961 INFO L142 QuantifierPusher]: treesize reduction 57, result has 70.3 percent of original size [2021-04-16 06:50:40,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-04-16 06:50:41,102 INFO L142 QuantifierPusher]: treesize reduction 41, result has 60.2 percent of original size [2021-04-16 06:50:41,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:50:41,105 INFO L142 QuantifierPusher]: treesize reduction 41, result has 59.8 percent of original size [2021-04-16 06:50:41,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:50:41,216 INFO L142 QuantifierPusher]: treesize reduction 41, result has 74.1 percent of original size [2021-04-16 06:50:41,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-04-16 06:50:41,347 INFO L142 QuantifierPusher]: treesize reduction 84, result has 59.4 percent of original size [2021-04-16 06:50:41,349 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.3 percent of original size 116 [2021-04-16 06:50:41,495 INFO L142 QuantifierPusher]: treesize reduction 31, result has 75.2 percent of original size [2021-04-16 06:50:41,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:50:41,628 INFO L142 QuantifierPusher]: treesize reduction 38, result has 64.8 percent of original size [2021-04-16 06:50:41,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:50:41,747 INFO L142 QuantifierPusher]: treesize reduction 44, result has 64.8 percent of original size [2021-04-16 06:50:41,750 INFO L147 QuantifierPusher]: treesize reduction 11, result has 86.4 percent of original size 70 [2021-04-16 06:50:41,893 INFO L142 QuantifierPusher]: treesize reduction 44, result has 64.2 percent of original size [2021-04-16 06:50:41,896 INFO L147 QuantifierPusher]: treesize reduction 11, result has 86.1 percent of original size 68 [2021-04-16 06:50:42,017 INFO L142 QuantifierPusher]: treesize reduction 12, result has 76.5 percent of original size [2021-04-16 06:50:42,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:50:42,108 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-04-16 06:50:42,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:50:42,201 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:50:42,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:50:42,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:50:42,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:50:42,368 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:50:42,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:50:42,460 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:50:42,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:42,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:50:42,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:50:42,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:42,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:42,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-04-16 06:50:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:42,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:42,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213962190] [2021-04-16 06:50:42,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:42,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-04-16 06:50:42,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729626746] [2021-04-16 06:50:42,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-04-16 06:50:42,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:42,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-04-16 06:50:42,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2021-04-16 06:50:42,872 INFO L87 Difference]: Start difference. First operand 1952 states and 2381 transitions. Second operand has 37 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 35 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:50:43,917 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2021-04-16 06:50:44,293 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2021-04-16 06:50:44,496 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2021-04-16 06:50:44,696 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2021-04-16 06:50:44,980 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-04-16 06:50:45,516 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-04-16 06:50:45,772 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-04-16 06:50:46,161 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-04-16 06:50:46,594 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2021-04-16 06:50:46,857 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-04-16 06:50:47,088 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2021-04-16 06:50:47,356 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-04-16 06:50:47,626 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-04-16 06:50:47,901 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-04-16 06:50:48,176 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2021-04-16 06:50:48,567 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-04-16 06:50:48,901 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-04-16 06:50:49,167 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-04-16 06:50:49,444 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-04-16 06:50:50,123 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2021-04-16 06:50:50,396 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-04-16 06:50:50,942 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2021-04-16 06:50:51,220 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-04-16 06:50:51,593 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-04-16 06:50:51,835 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-04-16 06:50:52,469 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-04-16 06:50:52,954 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-04-16 06:50:53,269 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-04-16 06:50:53,592 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2021-04-16 06:50:53,841 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-04-16 06:50:54,152 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2021-04-16 06:50:54,806 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-04-16 06:50:55,082 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-04-16 06:50:55,349 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2021-04-16 06:50:55,897 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2021-04-16 06:50:56,599 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2021-04-16 06:50:57,053 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-04-16 06:50:57,282 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-04-16 06:50:57,613 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2021-04-16 06:50:58,057 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-04-16 06:50:58,302 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2021-04-16 06:50:58,645 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-04-16 06:50:58,993 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-04-16 06:50:59,280 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-04-16 06:50:59,736 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-04-16 06:50:59,944 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-04-16 06:51:00,179 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-04-16 06:51:00,723 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-04-16 06:51:01,154 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2021-04-16 06:51:01,810 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2021-04-16 06:51:03,054 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2021-04-16 06:51:03,300 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-04-16 06:51:03,732 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2021-04-16 06:51:04,125 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-04-16 06:51:04,482 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-04-16 06:51:05,186 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-04-16 06:51:05,434 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-04-16 06:51:06,855 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-04-16 06:51:07,273 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-16 06:51:08,303 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-04-16 06:51:08,572 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-04-16 06:51:09,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:09,027 INFO L93 Difference]: Finished difference Result 2156 states and 2630 transitions. [2021-04-16 06:51:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-04-16 06:51:09,030 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 35 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2021-04-16 06:51:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:09,033 INFO L225 Difference]: With dead ends: 2156 [2021-04-16 06:51:09,034 INFO L226 Difference]: Without dead ends: 2154 [2021-04-16 06:51:09,034 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4470 ImplicationChecksByTransitivity, 19267.1ms TimeCoverageRelationStatistics Valid=1574, Invalid=13188, Unknown=0, NotChecked=0, Total=14762 [2021-04-16 06:51:09,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-04-16 06:51:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2033. [2021-04-16 06:51:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1876 states have (on average 1.1982942430703625) internal successors, (2248), 1946 states have internal predecessors, (2248), 116 states have call successors, (116), 41 states have call predecessors, (116), 40 states have return successors, (114), 45 states have call predecessors, (114), 114 states have call successors, (114) [2021-04-16 06:51:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2478 transitions. [2021-04-16 06:51:10,382 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2478 transitions. Word has length 72 [2021-04-16 06:51:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:10,382 INFO L480 AbstractCegarLoop]: Abstraction has 2033 states and 2478 transitions. [2021-04-16 06:51:10,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 35 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:51:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2478 transitions. [2021-04-16 06:51:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:51:10,384 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:10,384 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:10,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-04-16 06:51:10,384 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1689804415, now seen corresponding path program 17 times [2021-04-16 06:51:10,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:10,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175249917] [2021-04-16 06:51:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:10,393 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:10,393 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:10,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:10,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:10,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:10,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:10,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:10,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:10,483 INFO L142 QuantifierPusher]: treesize reduction 19, result has 68.3 percent of original size [2021-04-16 06:51:10,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:51:10,525 INFO L142 QuantifierPusher]: treesize reduction 19, result has 63.5 percent of original size [2021-04-16 06:51:10,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:51:10,535 INFO L142 QuantifierPusher]: treesize reduction 19, result has 68.3 percent of original size [2021-04-16 06:51:10,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:51:10,579 INFO L142 QuantifierPusher]: treesize reduction 19, result has 63.5 percent of original size [2021-04-16 06:51:10,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:51:10,592 INFO L142 QuantifierPusher]: treesize reduction 13, result has 72.9 percent of original size [2021-04-16 06:51:10,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:51:10,631 INFO L142 QuantifierPusher]: treesize reduction 13, result has 67.5 percent of original size [2021-04-16 06:51:10,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:51:10,645 INFO L142 QuantifierPusher]: treesize reduction 13, result has 66.7 percent of original size [2021-04-16 06:51:10,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:51:10,682 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-04-16 06:51:10,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:51:10,712 INFO L142 QuantifierPusher]: treesize reduction 15, result has 58.3 percent of original size [2021-04-16 06:51:10,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:10,721 INFO L142 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-04-16 06:51:10,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:51:10,731 INFO L142 QuantifierPusher]: treesize reduction 13, result has 65.8 percent of original size [2021-04-16 06:51:10,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:51:10,740 INFO L142 QuantifierPusher]: treesize reduction 15, result has 58.3 percent of original size [2021-04-16 06:51:10,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:10,750 INFO L142 QuantifierPusher]: treesize reduction 15, result has 58.3 percent of original size [2021-04-16 06:51:10,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:10,759 INFO L142 QuantifierPusher]: treesize reduction 38, result has 46.5 percent of original size [2021-04-16 06:51:10,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:51:10,835 INFO L142 QuantifierPusher]: treesize reduction 35, result has 50.7 percent of original size [2021-04-16 06:51:10,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:51:10,916 INFO L142 QuantifierPusher]: treesize reduction 51, result has 56.0 percent of original size [2021-04-16 06:51:10,917 INFO L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-04-16 06:51:11,030 INFO L142 QuantifierPusher]: treesize reduction 50, result has 60.3 percent of original size [2021-04-16 06:51:11,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:51:11,146 INFO L142 QuantifierPusher]: treesize reduction 50, result has 63.2 percent of original size [2021-04-16 06:51:11,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 06:51:11,285 INFO L142 QuantifierPusher]: treesize reduction 50, result has 62.7 percent of original size [2021-04-16 06:51:11,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:51:11,409 INFO L142 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-04-16 06:51:11,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:51:11,471 INFO L142 QuantifierPusher]: treesize reduction 30, result has 48.3 percent of original size [2021-04-16 06:51:11,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:51:11,537 INFO L142 QuantifierPusher]: treesize reduction 28, result has 73.8 percent of original size [2021-04-16 06:51:11,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:51:11,623 INFO L142 QuantifierPusher]: treesize reduction 28, result has 68.9 percent of original size [2021-04-16 06:51:11,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:51:11,708 INFO L142 QuantifierPusher]: treesize reduction 37, result has 62.2 percent of original size [2021-04-16 06:51:11,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:51:11,810 INFO L142 QuantifierPusher]: treesize reduction 34, result has 65.7 percent of original size [2021-04-16 06:51:11,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:51:11,943 INFO L142 QuantifierPusher]: treesize reduction 34, result has 64.9 percent of original size [2021-04-16 06:51:11,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:51:12,071 INFO L142 QuantifierPusher]: treesize reduction 18, result has 75.7 percent of original size [2021-04-16 06:51:12,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:51:12,218 INFO L142 QuantifierPusher]: treesize reduction 18, result has 73.1 percent of original size [2021-04-16 06:51:12,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:51:12,332 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.7 percent of original size [2021-04-16 06:51:12,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:51:12,445 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:51:12,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:51:12,533 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:51:12,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:51:12,613 INFO L142 QuantifierPusher]: treesize reduction 15, result has 80.5 percent of original size [2021-04-16 06:51:12,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:51:12,705 INFO L142 QuantifierPusher]: treesize reduction 14, result has 70.8 percent of original size [2021-04-16 06:51:12,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:51:12,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:51:12,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:51:12,841 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:51:12,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:51:12,917 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:51:12,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:12,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:12,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:51:13,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:13,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:51:13,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:13,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:51:13,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:13,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:13,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:13,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:13,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:13,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-04-16 06:51:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:13,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:13,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:13,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175249917] [2021-04-16 06:51:13,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:13,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-04-16 06:51:13,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511394792] [2021-04-16 06:51:13,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-04-16 06:51:13,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:13,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-04-16 06:51:13,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190 [2021-04-16 06:51:13,262 INFO L87 Difference]: Start difference. First operand 2033 states and 2478 transitions. Second operand has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:51:14,965 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-04-16 06:51:15,697 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-04-16 06:51:15,969 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-04-16 06:51:16,244 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-04-16 06:51:18,332 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2021-04-16 06:51:19,472 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2021-04-16 06:51:21,990 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-04-16 06:51:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:24,438 INFO L93 Difference]: Finished difference Result 2182 states and 2644 transitions. [2021-04-16 06:51:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-04-16 06:51:24,443 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2021-04-16 06:51:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:24,446 INFO L225 Difference]: With dead ends: 2182 [2021-04-16 06:51:24,446 INFO L226 Difference]: Without dead ends: 2180 [2021-04-16 06:51:24,447 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 6 SyntacticMatches, 8 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 7701.1ms TimeCoverageRelationStatistics Valid=753, Invalid=6053, Unknown=0, NotChecked=0, Total=6806 [2021-04-16 06:51:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2021-04-16 06:51:25,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2044. [2021-04-16 06:51:25,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1887 states have (on average 1.1987281399046106) internal successors, (2262), 1958 states have internal predecessors, (2262), 116 states have call successors, (116), 41 states have call predecessors, (116), 40 states have return successors, (114), 44 states have call predecessors, (114), 114 states have call successors, (114) [2021-04-16 06:51:25,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2492 transitions. [2021-04-16 06:51:25,817 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2492 transitions. Word has length 72 [2021-04-16 06:51:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:25,817 INFO L480 AbstractCegarLoop]: Abstraction has 2044 states and 2492 transitions. [2021-04-16 06:51:25,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:51:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2492 transitions. [2021-04-16 06:51:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:51:25,819 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:25,819 INFO L519 BasicCegarLoop]: trace histogram [9, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:25,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-04-16 06:51:25,819 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:25,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:25,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2091436369, now seen corresponding path program 18 times [2021-04-16 06:51:25,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:25,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65516655] [2021-04-16 06:51:25,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:25,825 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:25,826 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:25,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:25,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:25,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:25,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:25,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:25,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:51:25,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:25,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:51:25,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:25,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:51:25,967 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:51:25,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:25,976 INFO L142 QuantifierPusher]: treesize reduction 15, result has 59.5 percent of original size [2021-04-16 06:51:25,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:51:26,047 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 06:51:26,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:26,115 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.3 percent of original size [2021-04-16 06:51:26,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:51:26,200 INFO L142 QuantifierPusher]: treesize reduction 28, result has 63.2 percent of original size [2021-04-16 06:51:26,201 INFO L147 QuantifierPusher]: treesize reduction 8, result has 83.3 percent of original size 40 [2021-04-16 06:51:26,297 INFO L142 QuantifierPusher]: treesize reduction 42, result has 57.1 percent of original size [2021-04-16 06:51:26,298 INFO L147 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size 48 [2021-04-16 06:51:26,439 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2021-04-16 06:51:26,443 INFO L142 QuantifierPusher]: treesize reduction 42, result has 55.8 percent of original size [2021-04-16 06:51:26,444 INFO L147 QuantifierPusher]: treesize reduction 8, result has 84.9 percent of original size 45 [2021-04-16 06:51:26,547 INFO L142 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-04-16 06:51:26,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:51:26,626 INFO L142 QuantifierPusher]: treesize reduction 29, result has 63.7 percent of original size [2021-04-16 06:51:26,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:51:26,712 INFO L142 QuantifierPusher]: treesize reduction 29, result has 69.8 percent of original size [2021-04-16 06:51:26,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:51:26,840 INFO L142 QuantifierPusher]: treesize reduction 29, result has 63.7 percent of original size [2021-04-16 06:51:26,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:51:26,844 INFO L142 QuantifierPusher]: treesize reduction 30, result has 63.0 percent of original size [2021-04-16 06:51:26,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:51:26,932 INFO L142 QuantifierPusher]: treesize reduction 30, result has 69.1 percent of original size [2021-04-16 06:51:26,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:51:27,056 INFO L142 QuantifierPusher]: treesize reduction 30, result has 63.0 percent of original size [2021-04-16 06:51:27,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:51:27,059 INFO L142 QuantifierPusher]: treesize reduction 30, result has 63.0 percent of original size [2021-04-16 06:51:27,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:51:27,161 INFO L142 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-04-16 06:51:27,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-04-16 06:51:27,307 INFO L142 QuantifierPusher]: treesize reduction 24, result has 77.6 percent of original size [2021-04-16 06:51:27,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-04-16 06:51:27,464 INFO L142 QuantifierPusher]: treesize reduction 23, result has 67.6 percent of original size [2021-04-16 06:51:27,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:51:27,590 INFO L142 QuantifierPusher]: treesize reduction 23, result has 67.6 percent of original size [2021-04-16 06:51:27,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:51:27,593 INFO L142 QuantifierPusher]: treesize reduction 31, result has 67.7 percent of original size [2021-04-16 06:51:27,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:51:27,710 INFO L142 QuantifierPusher]: treesize reduction 33, result has 72.7 percent of original size [2021-04-16 06:51:27,711 INFO L147 QuantifierPusher]: treesize reduction 7, result has 92.0 percent of original size 81 [2021-04-16 06:51:27,795 INFO L142 QuantifierPusher]: treesize reduction 40, result has 65.8 percent of original size [2021-04-16 06:51:27,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:51:27,879 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-04-16 06:51:27,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:51:27,985 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-04-16 06:51:27,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:51:28,093 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-04-16 06:51:28,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:51:28,194 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:51:28,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:28,301 INFO L142 QuantifierPusher]: treesize reduction 11, result has 68.6 percent of original size [2021-04-16 06:51:28,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:28,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:51:28,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:51:28,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:28,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:51:28,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:28,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:51:28,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:28,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:51:28,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:28,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:28,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:28,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-04-16 06:51:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:28,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:28,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:28,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65516655] [2021-04-16 06:51:28,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:28,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-04-16 06:51:28,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985806767] [2021-04-16 06:51:28,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-04-16 06:51:28,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:28,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-04-16 06:51:28,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2021-04-16 06:51:28,821 INFO L87 Difference]: Start difference. First operand 2044 states and 2492 transitions. Second operand has 32 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:51:29,457 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-04-16 06:51:29,736 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-04-16 06:51:31,288 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2021-04-16 06:51:33,369 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-04-16 06:51:34,417 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2021-04-16 06:51:35,614 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-04-16 06:51:37,222 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-04-16 06:51:37,723 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-04-16 06:51:38,568 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-04-16 06:51:43,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:43,805 INFO L93 Difference]: Finished difference Result 2232 states and 2713 transitions. [2021-04-16 06:51:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-04-16 06:51:43,810 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2021-04-16 06:51:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:43,813 INFO L225 Difference]: With dead ends: 2232 [2021-04-16 06:51:43,813 INFO L226 Difference]: Without dead ends: 2230 [2021-04-16 06:51:43,814 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 8327.7ms TimeCoverageRelationStatistics Valid=456, Invalid=5244, Unknown=0, NotChecked=0, Total=5700 [2021-04-16 06:51:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2021-04-16 06:51:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2083. [2021-04-16 06:51:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 1922 states have (on average 1.1982310093652446) internal successors, (2303), 1992 states have internal predecessors, (2303), 117 states have call successors, (117), 44 states have call predecessors, (117), 43 states have return successors, (115), 46 states have call predecessors, (115), 115 states have call successors, (115) [2021-04-16 06:51:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2535 transitions. [2021-04-16 06:51:45,191 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2535 transitions. Word has length 72 [2021-04-16 06:51:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:45,191 INFO L480 AbstractCegarLoop]: Abstraction has 2083 states and 2535 transitions. [2021-04-16 06:51:45,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:51:45,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2535 transitions. [2021-04-16 06:51:45,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:51:45,193 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:45,193 INFO L519 BasicCegarLoop]: trace histogram [9, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:45,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-04-16 06:51:45,193 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:45,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:45,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1311069383, now seen corresponding path program 19 times [2021-04-16 06:51:45,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:45,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538073577] [2021-04-16 06:51:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:45,202 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:45,202 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:45,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:45,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:45,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:45,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:45,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:45,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:51:45,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:45,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:51:45,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:45,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:51:45,345 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:51:45,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:45,354 INFO L142 QuantifierPusher]: treesize reduction 15, result has 59.5 percent of original size [2021-04-16 06:51:45,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:51:45,429 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 06:51:45,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:45,502 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.3 percent of original size [2021-04-16 06:51:45,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:51:45,601 INFO L142 QuantifierPusher]: treesize reduction 28, result has 63.2 percent of original size [2021-04-16 06:51:45,602 INFO L147 QuantifierPusher]: treesize reduction 8, result has 83.3 percent of original size 40 [2021-04-16 06:51:45,706 INFO L142 QuantifierPusher]: treesize reduction 40, result has 58.3 percent of original size [2021-04-16 06:51:45,708 INFO L147 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size 48 [2021-04-16 06:51:45,826 INFO L142 QuantifierPusher]: treesize reduction 42, result has 55.8 percent of original size [2021-04-16 06:51:45,828 INFO L147 QuantifierPusher]: treesize reduction 8, result has 84.9 percent of original size 45 [2021-04-16 06:51:45,924 INFO L142 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-04-16 06:51:45,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:51:46,011 INFO L142 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-04-16 06:51:46,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:51:46,100 INFO L142 QuantifierPusher]: treesize reduction 20, result has 76.7 percent of original size [2021-04-16 06:51:46,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:51:46,209 INFO L142 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-04-16 06:51:46,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:51:46,212 INFO L142 QuantifierPusher]: treesize reduction 21, result has 70.4 percent of original size [2021-04-16 06:51:46,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:51:46,318 INFO L142 QuantifierPusher]: treesize reduction 34, result has 75.2 percent of original size [2021-04-16 06:51:46,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-04-16 06:51:46,477 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2021-04-16 06:51:46,479 INFO L142 QuantifierPusher]: treesize reduction 39, result has 64.9 percent of original size [2021-04-16 06:51:46,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:51:46,623 INFO L142 QuantifierPusher]: treesize reduction 39, result has 64.9 percent of original size [2021-04-16 06:51:46,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:51:46,626 INFO L142 QuantifierPusher]: treesize reduction 41, result has 68.2 percent of original size [2021-04-16 06:51:46,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:51:46,768 INFO L142 QuantifierPusher]: treesize reduction 50, result has 66.0 percent of original size [2021-04-16 06:51:46,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:51:46,917 INFO L142 QuantifierPusher]: treesize reduction 50, result has 65.3 percent of original size [2021-04-16 06:51:46,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:51:47,072 INFO L142 QuantifierPusher]: treesize reduction 20, result has 72.6 percent of original size [2021-04-16 06:51:47,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:51:47,219 INFO L142 QuantifierPusher]: treesize reduction 20, result has 71.8 percent of original size [2021-04-16 06:51:47,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:51:47,355 INFO L142 QuantifierPusher]: treesize reduction 20, result has 70.6 percent of original size [2021-04-16 06:51:47,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:51:47,461 INFO L142 QuantifierPusher]: treesize reduction 20, result has 61.5 percent of original size [2021-04-16 06:51:47,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:51:47,545 INFO L142 QuantifierPusher]: treesize reduction 20, result has 61.5 percent of original size [2021-04-16 06:51:47,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:51:47,634 INFO L142 QuantifierPusher]: treesize reduction 15, result has 81.0 percent of original size [2021-04-16 06:51:47,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:51:47,759 INFO L142 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-04-16 06:51:47,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:51:47,862 INFO L142 QuantifierPusher]: treesize reduction 13, result has 72.3 percent of original size [2021-04-16 06:51:47,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:51:47,967 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:51:47,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:51:48,054 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:51:48,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:51:48,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:51:48,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:48,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:48,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:51:48,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:48,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:51:48,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:48,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:51:48,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:48,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:48,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:48,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:48,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-04-16 06:51:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:48,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:48,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:48,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538073577] [2021-04-16 06:51:48,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:48,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-04-16 06:51:48,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346757325] [2021-04-16 06:51:48,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-04-16 06:51:48,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:48,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-04-16 06:51:48,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2021-04-16 06:51:48,566 INFO L87 Difference]: Start difference. First operand 2083 states and 2535 transitions. Second operand has 36 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 34 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:51:49,366 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 12 [2021-04-16 06:51:50,318 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2021-04-16 06:51:50,843 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2021-04-16 06:51:51,044 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 12 [2021-04-16 06:51:51,410 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2021-04-16 06:51:52,223 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-04-16 06:51:52,748 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 14 [2021-04-16 06:51:53,382 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-04-16 06:51:53,649 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2021-04-16 06:51:54,892 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-04-16 06:51:55,265 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-04-16 06:51:55,656 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-04-16 06:51:56,081 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-04-16 06:51:58,962 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2021-04-16 06:52:00,310 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-04-16 06:52:02,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:02,450 INFO L93 Difference]: Finished difference Result 2189 states and 2661 transitions. [2021-04-16 06:52:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-04-16 06:52:02,454 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 34 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2021-04-16 06:52:02,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:02,458 INFO L225 Difference]: With dead ends: 2189 [2021-04-16 06:52:02,458 INFO L226 Difference]: Without dead ends: 2187 [2021-04-16 06:52:02,458 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 9887.5ms TimeCoverageRelationStatistics Valid=647, Invalid=5359, Unknown=0, NotChecked=0, Total=6006 [2021-04-16 06:52:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-04-16 06:52:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2032. [2021-04-16 06:52:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 1876 states have (on average 1.1998933901918976) internal successors, (2251), 1944 states have internal predecessors, (2251), 113 states have call successors, (113), 43 states have call predecessors, (113), 42 states have return successors, (111), 44 states have call predecessors, (111), 111 states have call successors, (111) [2021-04-16 06:52:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 2475 transitions. [2021-04-16 06:52:03,880 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 2475 transitions. Word has length 72 [2021-04-16 06:52:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:03,881 INFO L480 AbstractCegarLoop]: Abstraction has 2032 states and 2475 transitions. [2021-04-16 06:52:03,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 34 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:52:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 2475 transitions. [2021-04-16 06:52:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-04-16 06:52:03,883 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:03,883 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:03,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-04-16 06:52:03,883 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:03,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:03,883 INFO L82 PathProgramCache]: Analyzing trace with hash 218298293, now seen corresponding path program 23 times [2021-04-16 06:52:03,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:03,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362580157] [2021-04-16 06:52:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:03,891 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:03,891 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:03,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:03,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:03,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:03,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:03,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:03,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:52:04,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:04,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:52:04,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:04,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:04,054 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-04-16 06:52:04,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:52:04,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-16 06:52:04,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:52:04,083 INFO L142 QuantifierPusher]: treesize reduction 24, result has 54.7 percent of original size [2021-04-16 06:52:04,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:52:04,151 INFO L142 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-04-16 06:52:04,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:52:04,270 INFO L142 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size [2021-04-16 06:52:04,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:52:04,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:52:04,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:52:04,438 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:52:04,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:52:04,519 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.9 percent of original size [2021-04-16 06:52:04,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:52:04,634 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:52:04,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:52:04,638 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-04-16 06:52:04,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:52:04,731 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.2 percent of original size [2021-04-16 06:52:04,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:52:04,871 INFO L142 QuantifierPusher]: treesize reduction 47, result has 61.8 percent of original size [2021-04-16 06:52:04,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:52:05,056 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2021-04-16 06:52:05,058 INFO L142 QuantifierPusher]: treesize reduction 15, result has 76.2 percent of original size [2021-04-16 06:52:05,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:52:05,166 INFO L142 QuantifierPusher]: treesize reduction 15, result has 76.2 percent of original size [2021-04-16 06:52:05,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:52:05,169 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-16 06:52:05,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:52:05,255 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:52:05,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:52:05,335 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-04-16 06:52:05,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:52:05,435 INFO L142 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-04-16 06:52:05,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:52:05,540 INFO L142 QuantifierPusher]: treesize reduction 35, result has 61.5 percent of original size [2021-04-16 06:52:05,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:52:05,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:05,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:05,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:52:05,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:05,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:52:05,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:05,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:05,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:05,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-04-16 06:52:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:05,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:05,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:05,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-04-16 06:52:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:05,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:05,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:05,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362580157] [2021-04-16 06:52:05,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:05,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-04-16 06:52:05,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701413606] [2021-04-16 06:52:05,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-04-16 06:52:05,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:05,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-04-16 06:52:05,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:52:05,987 INFO L87 Difference]: Start difference. First operand 2032 states and 2475 transitions. Second operand has 25 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:52:15,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:15,170 INFO L93 Difference]: Finished difference Result 2235 states and 2720 transitions. [2021-04-16 06:52:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-04-16 06:52:15,176 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 74 [2021-04-16 06:52:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:15,179 INFO L225 Difference]: With dead ends: 2235 [2021-04-16 06:52:15,179 INFO L226 Difference]: Without dead ends: 2233 [2021-04-16 06:52:15,180 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 3759.6ms TimeCoverageRelationStatistics Valid=180, Invalid=1542, Unknown=0, NotChecked=0, Total=1722 [2021-04-16 06:52:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-04-16 06:52:16,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2035. [2021-04-16 06:52:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1879 states have (on average 1.2011708355508248) internal successors, (2257), 1947 states have internal predecessors, (2257), 113 states have call successors, (113), 43 states have call predecessors, (113), 42 states have return successors, (111), 44 states have call predecessors, (111), 111 states have call successors, (111) [2021-04-16 06:52:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2481 transitions. [2021-04-16 06:52:16,555 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2481 transitions. Word has length 74 [2021-04-16 06:52:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:16,555 INFO L480 AbstractCegarLoop]: Abstraction has 2035 states and 2481 transitions. [2021-04-16 06:52:16,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:52:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2481 transitions. [2021-04-16 06:52:16,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:52:16,557 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:16,557 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:16,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-04-16 06:52:16,558 INFO L428 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:16,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:16,558 INFO L82 PathProgramCache]: Analyzing trace with hash 726069085, now seen corresponding path program 27 times [2021-04-16 06:52:16,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:16,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810476962] [2021-04-16 06:52:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:16,564 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:16,564 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:16,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:16,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:16,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:16,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:16,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:16,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:16,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:16,716 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:52:16,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:16,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:52:16,815 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-04-16 06:52:16,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:52:16,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:52:16,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:52:16,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:52:17,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:17,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:52:17,072 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-04-16 06:52:17,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:52:17,186 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-04-16 06:52:17,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:17,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:17,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:17,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:17,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:17,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:17,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810476962] [2021-04-16 06:52:17,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:17,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:52:17,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404156582] [2021-04-16 06:52:17,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:52:17,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:17,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:52:17,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:52:17,311 INFO L87 Difference]: Start difference. First operand 2035 states and 2481 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:22,016 INFO L93 Difference]: Finished difference Result 3893 states and 4835 transitions. [2021-04-16 06:52:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-16 06:52:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2021-04-16 06:52:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:22,025 INFO L225 Difference]: With dead ends: 3893 [2021-04-16 06:52:22,025 INFO L226 Difference]: Without dead ends: 3322 [2021-04-16 06:52:22,026 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1463.5ms TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:52:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2021-04-16 06:52:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 2704. [2021-04-16 06:52:23,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2704 states, 2548 states have (on average 1.2154631083202512) internal successors, (3097), 2616 states have internal predecessors, (3097), 113 states have call successors, (113), 43 states have call predecessors, (113), 42 states have return successors, (111), 44 states have call predecessors, (111), 111 states have call successors, (111) [2021-04-16 06:52:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3321 transitions. [2021-04-16 06:52:23,653 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3321 transitions. Word has length 72 [2021-04-16 06:52:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:23,653 INFO L480 AbstractCegarLoop]: Abstraction has 2704 states and 3321 transitions. [2021-04-16 06:52:23,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3321 transitions. [2021-04-16 06:52:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:52:23,656 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:23,656 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:23,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-04-16 06:52:23,656 INFO L428 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:23,656 INFO L82 PathProgramCache]: Analyzing trace with hash -919244112, now seen corresponding path program 28 times [2021-04-16 06:52:23,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:23,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913500204] [2021-04-16 06:52:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:23,664 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:23,665 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:23,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:23,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:52:23,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:23,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:23,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:23,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:23,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:23,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:23,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:23,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:23,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:23,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:52:23,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-04-16 06:52:23,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:24,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:24,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:24,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:24,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913500204] [2021-04-16 06:52:24,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:24,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:52:24,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448305793] [2021-04-16 06:52:24,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:52:24,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:24,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:52:24,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:52:24,015 INFO L87 Difference]: Start difference. First operand 2704 states and 3321 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:28,644 INFO L93 Difference]: Finished difference Result 3193 states and 3934 transitions. [2021-04-16 06:52:28,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-04-16 06:52:28,652 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2021-04-16 06:52:28,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:28,657 INFO L225 Difference]: With dead ends: 3193 [2021-04-16 06:52:28,657 INFO L226 Difference]: Without dead ends: 3157 [2021-04-16 06:52:28,657 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1114.3ms TimeCoverageRelationStatistics Valid=541, Invalid=1099, Unknown=0, NotChecked=0, Total=1640 [2021-04-16 06:52:28,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-04-16 06:52:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2705. [2021-04-16 06:52:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2549 states have (on average 1.2145939584150647) internal successors, (3096), 2617 states have internal predecessors, (3096), 113 states have call successors, (113), 43 states have call predecessors, (113), 42 states have return successors, (111), 44 states have call predecessors, (111), 111 states have call successors, (111) [2021-04-16 06:52:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3320 transitions. [2021-04-16 06:52:30,290 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3320 transitions. Word has length 72 [2021-04-16 06:52:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:30,290 INFO L480 AbstractCegarLoop]: Abstraction has 2705 states and 3320 transitions. [2021-04-16 06:52:30,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3320 transitions. [2021-04-16 06:52:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:52:30,293 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:30,293 INFO L519 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:30,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-04-16 06:52:30,293 INFO L428 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:30,293 INFO L82 PathProgramCache]: Analyzing trace with hash -218179534, now seen corresponding path program 30 times [2021-04-16 06:52:30,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:30,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786608406] [2021-04-16 06:52:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:30,299 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:30,300 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:30,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:30,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:30,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:30,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:30,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:52:30,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:30,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:30,397 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:52:30,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,408 INFO L142 QuantifierPusher]: treesize reduction 20, result has 57.4 percent of original size [2021-04-16 06:52:30,409 INFO L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-04-16 06:52:30,466 INFO L142 QuantifierPusher]: treesize reduction 19, result has 69.4 percent of original size [2021-04-16 06:52:30,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:52:30,571 INFO L142 QuantifierPusher]: treesize reduction 19, result has 68.3 percent of original size [2021-04-16 06:52:30,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:52:30,670 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:52:30,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,682 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:52:30,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,709 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:52:30,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,740 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:52:30,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,772 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:52:30,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,803 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:52:30,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:52:30,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,863 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:52:30,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,897 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-16 06:52:30,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:30,933 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-04-16 06:52:30,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:52:30,987 INFO L142 QuantifierPusher]: treesize reduction 13, result has 55.2 percent of original size [2021-04-16 06:52:30,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:52:31,061 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-04-16 06:52:31,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:52:31,158 INFO L142 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-04-16 06:52:31,160 INFO L147 QuantifierPusher]: treesize reduction 8, result has 82.2 percent of original size 37 [2021-04-16 06:52:31,266 INFO L142 QuantifierPusher]: treesize reduction 29, result has 68.1 percent of original size [2021-04-16 06:52:31,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:52:31,455 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2021-04-16 06:52:31,458 INFO L142 QuantifierPusher]: treesize reduction 29, result has 67.8 percent of original size [2021-04-16 06:52:31,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-16 06:52:31,614 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:52:31,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:52:31,668 INFO L142 QuantifierPusher]: treesize reduction 41, result has 48.1 percent of original size [2021-04-16 06:52:31,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:52:31,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:31,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:52:31,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:31,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:52:31,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:31,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:52:31,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:31,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:31,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:31,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:31,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:31,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786608406] [2021-04-16 06:52:31,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:31,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:52:31,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819590106] [2021-04-16 06:52:31,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:52:31,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:31,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:52:31,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:52:31,972 INFO L87 Difference]: Start difference. First operand 2705 states and 3320 transitions. Second operand has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:36,819 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-04-16 06:52:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:42,006 INFO L93 Difference]: Finished difference Result 3193 states and 3927 transitions. [2021-04-16 06:52:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-04-16 06:52:42,011 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2021-04-16 06:52:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:42,015 INFO L225 Difference]: With dead ends: 3193 [2021-04-16 06:52:42,015 INFO L226 Difference]: Without dead ends: 3191 [2021-04-16 06:52:42,016 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2219 ImplicationChecksByTransitivity, 5962.4ms TimeCoverageRelationStatistics Valid=1379, Invalid=5101, Unknown=0, NotChecked=0, Total=6480 [2021-04-16 06:52:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2021-04-16 06:52:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 2731. [2021-04-16 06:52:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2731 states, 2571 states have (on average 1.2131466355503695) internal successors, (3119), 2642 states have internal predecessors, (3119), 116 states have call successors, (116), 44 states have call predecessors, (116), 43 states have return successors, (114), 44 states have call predecessors, (114), 114 states have call successors, (114) [2021-04-16 06:52:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 3349 transitions. [2021-04-16 06:52:43,765 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 3349 transitions. Word has length 72 [2021-04-16 06:52:43,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:43,765 INFO L480 AbstractCegarLoop]: Abstraction has 2731 states and 3349 transitions. [2021-04-16 06:52:43,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 3349 transitions. [2021-04-16 06:52:43,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:52:43,767 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:43,767 INFO L519 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:43,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-04-16 06:52:43,767 INFO L428 AbstractCegarLoop]: === Iteration 117 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:43,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:43,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1136502034, now seen corresponding path program 31 times [2021-04-16 06:52:43,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:43,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968402145] [2021-04-16 06:52:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:43,776 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:43,777 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:43,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:43,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:43,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:43,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:43,872 INFO L142 QuantifierPusher]: treesize reduction 24, result has 52.0 percent of original size [2021-04-16 06:52:43,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:52:43,928 INFO L142 QuantifierPusher]: treesize reduction 24, result has 52.0 percent of original size [2021-04-16 06:52:43,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:52:43,985 INFO L142 QuantifierPusher]: treesize reduction 24, result has 52.0 percent of original size [2021-04-16 06:52:43,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:52:44,047 INFO L142 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-04-16 06:52:44,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:52:44,114 INFO L142 QuantifierPusher]: treesize reduction 21, result has 46.2 percent of original size [2021-04-16 06:52:44,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:52:44,179 INFO L142 QuantifierPusher]: treesize reduction 23, result has 11.5 percent of original size [2021-04-16 06:52:44,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:44,213 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-04-16 06:52:44,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:44,227 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-04-16 06:52:44,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:52:44,245 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-04-16 06:52:44,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:52:44,273 INFO L142 QuantifierPusher]: treesize reduction 15, result has 64.3 percent of original size [2021-04-16 06:52:44,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:44,304 INFO L142 QuantifierPusher]: treesize reduction 18, result has 71.0 percent of original size [2021-04-16 06:52:44,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:52:44,392 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-04-16 06:52:44,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:52:44,480 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-04-16 06:52:44,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:52:44,571 INFO L142 QuantifierPusher]: treesize reduction 43, result has 61.6 percent of original size [2021-04-16 06:52:44,573 INFO L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-04-16 06:52:44,681 INFO L142 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-04-16 06:52:44,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:52:44,803 INFO L142 QuantifierPusher]: treesize reduction 44, result has 67.9 percent of original size [2021-04-16 06:52:44,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:52:44,972 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2021-04-16 06:52:44,976 INFO L142 QuantifierPusher]: treesize reduction 27, result has 79.5 percent of original size [2021-04-16 06:52:44,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-04-16 06:52:45,223 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2021-04-16 06:52:45,227 INFO L142 QuantifierPusher]: treesize reduction 27, result has 79.2 percent of original size [2021-04-16 06:52:45,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-04-16 06:52:45,452 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-04-16 06:52:45,456 INFO L142 QuantifierPusher]: treesize reduction 29, result has 77.5 percent of original size [2021-04-16 06:52:45,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:52:45,663 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2021-04-16 06:52:45,666 INFO L142 QuantifierPusher]: treesize reduction 8, result has 90.0 percent of original size [2021-04-16 06:52:45,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:52:45,817 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.5 percent of original size [2021-04-16 06:52:45,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:52:45,977 INFO L142 QuantifierPusher]: treesize reduction 8, result has 93.7 percent of original size [2021-04-16 06:52:45,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-04-16 06:52:46,152 INFO L142 QuantifierPusher]: treesize reduction 40, result has 45.2 percent of original size [2021-04-16 06:52:46,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:52:46,271 INFO L142 QuantifierPusher]: treesize reduction 24, result has 41.5 percent of original size [2021-04-16 06:52:46,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:52:46,369 INFO L142 QuantifierPusher]: treesize reduction 54, result has 40.0 percent of original size [2021-04-16 06:52:46,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:52:46,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:46,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:46,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:46,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:52:46,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:46,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:52:46,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:46,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:46,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:46,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:46,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:46,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968402145] [2021-04-16 06:52:46,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:46,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:52:46,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907166217] [2021-04-16 06:52:46,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:52:46,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:52:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:52:46,861 INFO L87 Difference]: Start difference. First operand 2731 states and 3349 transitions. Second operand has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 26 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:50,680 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2021-04-16 06:52:51,699 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2021-04-16 06:52:52,142 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-04-16 06:52:53,479 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2021-04-16 06:52:54,021 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2021-04-16 06:52:54,347 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2021-04-16 06:52:55,065 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-04-16 06:52:57,822 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-04-16 06:52:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:59,374 INFO L93 Difference]: Finished difference Result 2920 states and 3570 transitions. [2021-04-16 06:52:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-04-16 06:52:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 26 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2021-04-16 06:52:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:59,383 INFO L225 Difference]: With dead ends: 2920 [2021-04-16 06:52:59,383 INFO L226 Difference]: Without dead ends: 2918 [2021-04-16 06:52:59,384 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 7266.6ms TimeCoverageRelationStatistics Valid=418, Invalid=3122, Unknown=0, NotChecked=0, Total=3540 [2021-04-16 06:52:59,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2021-04-16 06:53:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 2746. [2021-04-16 06:53:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2746 states, 2586 states have (on average 1.2138437741686001) internal successors, (3139), 2657 states have internal predecessors, (3139), 116 states have call successors, (116), 44 states have call predecessors, (116), 43 states have return successors, (114), 44 states have call predecessors, (114), 114 states have call successors, (114) [2021-04-16 06:53:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 3369 transitions. [2021-04-16 06:53:01,083 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 3369 transitions. Word has length 72 [2021-04-16 06:53:01,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:53:01,083 INFO L480 AbstractCegarLoop]: Abstraction has 2746 states and 3369 transitions. [2021-04-16 06:53:01,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 26 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:01,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 3369 transitions. [2021-04-16 06:53:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:53:01,086 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:53:01,086 INFO L519 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:53:01,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-04-16 06:53:01,086 INFO L428 AbstractCegarLoop]: === Iteration 118 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:53:01,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:53:01,086 INFO L82 PathProgramCache]: Analyzing trace with hash 178101550, now seen corresponding path program 32 times [2021-04-16 06:53:01,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:53:01,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12518882] [2021-04-16 06:53:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:53:01,093 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:53:01,094 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:53:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:01,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:01,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:01,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:01,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:01,198 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:53:01,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:53:01,222 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-04-16 06:53:01,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:53:01,250 INFO L142 QuantifierPusher]: treesize reduction 33, result has 59.8 percent of original size [2021-04-16 06:53:01,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:53:01,340 INFO L142 QuantifierPusher]: treesize reduction 18, result has 59.1 percent of original size [2021-04-16 06:53:01,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:53:01,391 INFO L142 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-04-16 06:53:01,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:53:01,449 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:53:01,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:53:01,494 INFO L142 QuantifierPusher]: treesize reduction 35, result has 44.4 percent of original size [2021-04-16 06:53:01,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:53:01,508 INFO L142 QuantifierPusher]: treesize reduction 40, result has 43.7 percent of original size [2021-04-16 06:53:01,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:53:01,524 INFO L142 QuantifierPusher]: treesize reduction 42, result has 53.3 percent of original size [2021-04-16 06:53:01,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:53:01,610 INFO L142 QuantifierPusher]: treesize reduction 40, result has 47.4 percent of original size [2021-04-16 06:53:01,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:53:01,685 INFO L142 QuantifierPusher]: treesize reduction 40, result has 51.2 percent of original size [2021-04-16 06:53:01,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:53:01,720 INFO L142 QuantifierPusher]: treesize reduction 40, result has 58.3 percent of original size [2021-04-16 06:53:01,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:53:01,868 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2021-04-16 06:53:01,872 INFO L142 QuantifierPusher]: treesize reduction 80, result has 54.8 percent of original size [2021-04-16 06:53:01,873 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.8 percent of original size 89 [2021-04-16 06:53:02,055 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2021-04-16 06:53:02,059 INFO L142 QuantifierPusher]: treesize reduction 73, result has 60.3 percent of original size [2021-04-16 06:53:02,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-04-16 06:53:02,325 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2021-04-16 06:53:02,329 INFO L142 QuantifierPusher]: treesize reduction 75, result has 59.0 percent of original size [2021-04-16 06:53:02,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-04-16 06:53:02,557 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2021-04-16 06:53:02,561 INFO L142 QuantifierPusher]: treesize reduction 18, result has 73.9 percent of original size [2021-04-16 06:53:02,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:53:02,668 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.9 percent of original size [2021-04-16 06:53:02,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:53:02,773 INFO L142 QuantifierPusher]: treesize reduction 28, result has 80.7 percent of original size [2021-04-16 06:53:02,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-04-16 06:53:03,020 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2021-04-16 06:53:03,023 INFO L142 QuantifierPusher]: treesize reduction 16, result has 76.1 percent of original size [2021-04-16 06:53:03,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:53:03,026 INFO L142 QuantifierPusher]: treesize reduction 16, result has 75.8 percent of original size [2021-04-16 06:53:03,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:53:03,142 INFO L142 QuantifierPusher]: treesize reduction 16, result has 80.5 percent of original size [2021-04-16 06:53:03,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:53:03,313 INFO L142 QuantifierPusher]: treesize reduction 16, result has 75.8 percent of original size [2021-04-16 06:53:03,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:53:03,317 INFO L142 QuantifierPusher]: treesize reduction 17, result has 74.2 percent of original size [2021-04-16 06:53:03,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:53:03,439 INFO L142 QuantifierPusher]: treesize reduction 16, result has 82.0 percent of original size [2021-04-16 06:53:03,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:53:03,645 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2021-04-16 06:53:03,647 INFO L142 QuantifierPusher]: treesize reduction 16, result has 80.2 percent of original size [2021-04-16 06:53:03,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:53:03,813 INFO L142 QuantifierPusher]: treesize reduction 39, result has 70.9 percent of original size [2021-04-16 06:53:03,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-04-16 06:53:04,060 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2021-04-16 06:53:04,063 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:53:04,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:53:04,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:53:04,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:53:04,244 INFO L142 QuantifierPusher]: treesize reduction 37, result has 50.7 percent of original size [2021-04-16 06:53:04,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:53:04,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:04,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:53:04,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:04,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:53:04,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:04,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:53:04,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:04,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:04,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:04,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:04,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:04,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12518882] [2021-04-16 06:53:04,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:04,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:53:04,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251304753] [2021-04-16 06:53:04,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:53:04,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:04,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:53:04,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:53:04,727 INFO L87 Difference]: Start difference. First operand 2746 states and 3369 transitions. Second operand has 31 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:05,602 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 18 [2021-04-16 06:53:06,055 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-04-16 06:53:07,421 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2021-04-16 06:53:08,530 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 17 [2021-04-16 06:53:09,145 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-04-16 06:53:09,496 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2021-04-16 06:53:10,322 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 27 [2021-04-16 06:53:10,637 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-04-16 06:53:11,045 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 17 [2021-04-16 06:53:11,347 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2021-04-16 06:53:12,558 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-04-16 06:53:13,612 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2021-04-16 06:53:14,310 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-04-16 06:53:14,507 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-04-16 06:53:15,357 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2021-04-16 06:53:15,760 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-04-16 06:53:17,899 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-04-16 06:53:19,125 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-04-16 06:53:19,713 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-04-16 06:53:20,121 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-04-16 06:53:21,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:53:21,565 INFO L93 Difference]: Finished difference Result 3336 states and 4098 transitions. [2021-04-16 06:53:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-04-16 06:53:21,571 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2021-04-16 06:53:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:53:21,575 INFO L225 Difference]: With dead ends: 3336 [2021-04-16 06:53:21,575 INFO L226 Difference]: Without dead ends: 3334 [2021-04-16 06:53:21,576 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 11265.0ms TimeCoverageRelationStatistics Valid=755, Invalid=6051, Unknown=0, NotChecked=0, Total=6806 [2021-04-16 06:53:21,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-04-16 06:53:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2799. [2021-04-16 06:53:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2636 states have (on average 1.2154779969650986) internal successors, (3204), 2708 states have internal predecessors, (3204), 117 states have call successors, (117), 46 states have call predecessors, (117), 45 states have return successors, (115), 44 states have call predecessors, (115), 115 states have call successors, (115) [2021-04-16 06:53:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3436 transitions. [2021-04-16 06:53:23,332 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3436 transitions. Word has length 72 [2021-04-16 06:53:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:53:23,332 INFO L480 AbstractCegarLoop]: Abstraction has 2799 states and 3436 transitions. [2021-04-16 06:53:23,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:23,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3436 transitions. [2021-04-16 06:53:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-04-16 06:53:23,336 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:53:23,336 INFO L519 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:53:23,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-04-16 06:53:23,336 INFO L428 AbstractCegarLoop]: === Iteration 119 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:53:23,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:53:23,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1382753881, now seen corresponding path program 20 times [2021-04-16 06:53:23,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:53:23,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044829167] [2021-04-16 06:53:23,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:53:23,351 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:53:23,352 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:53:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:23,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:23,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:23,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:23,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:23,437 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:53:23,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:53:23,491 INFO L142 QuantifierPusher]: treesize reduction 26, result has 48.0 percent of original size [2021-04-16 06:53:23,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:53:23,547 INFO L142 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size [2021-04-16 06:53:23,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:53:23,569 INFO L142 QuantifierPusher]: treesize reduction 32, result has 17.9 percent of original size [2021-04-16 06:53:23,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:23,583 INFO L142 QuantifierPusher]: treesize reduction 81, result has 25.0 percent of original size [2021-04-16 06:53:23,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:53:23,680 INFO L142 QuantifierPusher]: treesize reduction 94, result has 20.3 percent of original size [2021-04-16 06:53:23,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:53:23,774 INFO L142 QuantifierPusher]: treesize reduction 96, result has 27.8 percent of original size [2021-04-16 06:53:23,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:53:23,876 INFO L142 QuantifierPusher]: treesize reduction 43, result has 54.7 percent of original size [2021-04-16 06:53:23,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 06:53:24,008 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2021-04-16 06:53:24,011 INFO L142 QuantifierPusher]: treesize reduction 43, result has 53.8 percent of original size [2021-04-16 06:53:24,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:53:24,150 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-04-16 06:53:24,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:53:24,244 INFO L142 QuantifierPusher]: treesize reduction 40, result has 54.0 percent of original size [2021-04-16 06:53:24,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:53:24,338 INFO L142 QuantifierPusher]: treesize reduction 43, result has 60.2 percent of original size [2021-04-16 06:53:24,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:53:24,436 INFO L142 QuantifierPusher]: treesize reduction 56, result has 59.4 percent of original size [2021-04-16 06:53:24,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:53:24,567 INFO L142 QuantifierPusher]: treesize reduction 57, result has 64.6 percent of original size [2021-04-16 06:53:24,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-04-16 06:53:24,718 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2021-04-16 06:53:24,722 INFO L142 QuantifierPusher]: treesize reduction 70, result has 61.3 percent of original size [2021-04-16 06:53:24,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-04-16 06:53:24,905 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2021-04-16 06:53:24,909 INFO L142 QuantifierPusher]: treesize reduction 70, result has 60.5 percent of original size [2021-04-16 06:53:24,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-04-16 06:53:24,955 INFO L142 QuantifierPusher]: treesize reduction 47, result has 64.7 percent of original size [2021-04-16 06:53:24,957 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.7 percent of original size 78 [2021-04-16 06:53:25,140 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-04-16 06:53:25,145 INFO L142 QuantifierPusher]: treesize reduction 45, result has 69.6 percent of original size [2021-04-16 06:53:25,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-04-16 06:53:25,407 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-04-16 06:53:25,410 INFO L142 QuantifierPusher]: treesize reduction 45, result has 69.4 percent of original size [2021-04-16 06:53:25,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-04-16 06:53:25,643 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-04-16 06:53:25,646 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-04-16 06:53:25,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:53:25,752 INFO L142 QuantifierPusher]: treesize reduction 60, result has 46.9 percent of original size [2021-04-16 06:53:25,754 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.8 percent of original size 46 [2021-04-16 06:53:25,868 INFO L142 QuantifierPusher]: treesize reduction 62, result has 57.8 percent of original size [2021-04-16 06:53:25,869 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.8 percent of original size 78 [2021-04-16 06:53:26,022 INFO L142 QuantifierPusher]: treesize reduction 62, result has 57.8 percent of original size [2021-04-16 06:53:26,024 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.8 percent of original size 78 [2021-04-16 06:53:26,026 INFO L142 QuantifierPusher]: treesize reduction 80, result has 54.0 percent of original size [2021-04-16 06:53:26,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:53:26,257 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2021-04-16 06:53:26,261 INFO L142 QuantifierPusher]: treesize reduction 70, result has 57.6 percent of original size [2021-04-16 06:53:26,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-04-16 06:53:26,470 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2021-04-16 06:53:26,473 INFO L142 QuantifierPusher]: treesize reduction 40, result has 71.0 percent of original size [2021-04-16 06:53:26,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:53:26,722 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2021-04-16 06:53:26,725 INFO L142 QuantifierPusher]: treesize reduction 62, result has 55.4 percent of original size [2021-04-16 06:53:26,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:53:26,898 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2021-04-16 06:53:26,901 INFO L142 QuantifierPusher]: treesize reduction 62, result has 54.7 percent of original size [2021-04-16 06:53:26,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:53:27,088 INFO L142 QuantifierPusher]: treesize reduction 36, result has 62.1 percent of original size [2021-04-16 06:53:27,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:53:27,263 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:53:27,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:53:27,368 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:53:27,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:27,485 INFO L142 QuantifierPusher]: treesize reduction 19, result has 58.7 percent of original size [2021-04-16 06:53:27,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:53:27,608 INFO L142 QuantifierPusher]: treesize reduction 26, result has 69.0 percent of original size [2021-04-16 06:53:27,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:53:27,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:27,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:27,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:27,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:53:27,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:27,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:53:27,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:27,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:28,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:28,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:28,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:28,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-04-16 06:53:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:28,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:28,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-04-16 06:53:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:28,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:28,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:28,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044829167] [2021-04-16 06:53:28,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:28,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-04-16 06:53:28,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606923764] [2021-04-16 06:53:28,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-04-16 06:53:28,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:28,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-04-16 06:53:28,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2021-04-16 06:53:28,138 INFO L87 Difference]: Start difference. First operand 2799 states and 3436 transitions. Second operand has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 35 states have internal predecessors, (64), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:53:28,993 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 12 [2021-04-16 06:53:29,784 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-04-16 06:53:30,254 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-04-16 06:53:30,480 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 27 [2021-04-16 06:53:31,338 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2021-04-16 06:53:31,981 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-04-16 06:53:32,176 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-04-16 06:53:32,484 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-04-16 06:53:33,114 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-04-16 06:53:34,033 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 29 [2021-04-16 06:53:34,700 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2021-04-16 06:53:35,278 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-04-16 06:53:35,742 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-04-16 06:53:36,583 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-04-16 06:53:40,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:53:40,146 INFO L93 Difference]: Finished difference Result 2844 states and 3483 transitions. [2021-04-16 06:53:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-04-16 06:53:40,150 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 35 states have internal predecessors, (64), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2021-04-16 06:53:40,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:53:40,153 INFO L225 Difference]: With dead ends: 2844 [2021-04-16 06:53:40,154 INFO L226 Difference]: Without dead ends: 2785 [2021-04-16 06:53:40,154 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 8998.5ms TimeCoverageRelationStatistics Valid=387, Invalid=3645, Unknown=0, NotChecked=0, Total=4032 [2021-04-16 06:53:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-04-16 06:53:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2746. [2021-04-16 06:53:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2746 states, 2587 states have (on average 1.2180131426362582) internal successors, (3151), 2658 states have internal predecessors, (3151), 114 states have call successors, (114), 45 states have call predecessors, (114), 44 states have return successors, (113), 42 states have call predecessors, (113), 113 states have call successors, (113) [2021-04-16 06:53:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 3378 transitions. [2021-04-16 06:53:41,885 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 3378 transitions. Word has length 75 [2021-04-16 06:53:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:53:41,885 INFO L480 AbstractCegarLoop]: Abstraction has 2746 states and 3378 transitions. [2021-04-16 06:53:41,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 35 states have internal predecessors, (64), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:53:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 3378 transitions. [2021-04-16 06:53:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-04-16 06:53:41,887 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:53:41,887 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:53:41,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-04-16 06:53:41,888 INFO L428 AbstractCegarLoop]: === Iteration 120 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:53:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:53:41,888 INFO L82 PathProgramCache]: Analyzing trace with hash 139638767, now seen corresponding path program 24 times [2021-04-16 06:53:41,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:53:41,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578462065] [2021-04-16 06:53:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:53:41,907 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:53:41,908 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:53:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:41,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:41,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:41,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:41,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:41,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:41,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:53:41,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:41,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:53:42,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:42,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:53:42,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:42,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:53:42,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:42,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:53:42,117 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:53:42,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:42,129 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-04-16 06:53:42,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:53:42,144 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-04-16 06:53:42,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:53:42,163 INFO L142 QuantifierPusher]: treesize reduction 24, result has 71.1 percent of original size [2021-04-16 06:53:42,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:53:42,308 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 17 [2021-04-16 06:53:42,312 INFO L142 QuantifierPusher]: treesize reduction 15, result has 51.6 percent of original size [2021-04-16 06:53:42,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:53:42,333 INFO L142 QuantifierPusher]: treesize reduction 15, result has 51.6 percent of original size [2021-04-16 06:53:42,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:53:42,356 INFO L142 QuantifierPusher]: treesize reduction 15, result has 51.6 percent of original size [2021-04-16 06:53:42,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:53:42,417 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.8 percent of original size [2021-04-16 06:53:42,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:53:42,532 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.2 percent of original size [2021-04-16 06:53:42,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:53:42,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:53:42,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:53:42,647 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:53:42,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:42,715 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:53:42,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:53:42,792 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-04-16 06:53:42,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:53:42,876 INFO L142 QuantifierPusher]: treesize reduction 29, result has 69.5 percent of original size [2021-04-16 06:53:42,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:53:43,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:43,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:43,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:43,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:53:43,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:43,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:53:43,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:43,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:43,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:43,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:43,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:43,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-04-16 06:53:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:43,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:43,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:43,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-04-16 06:53:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:43,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:43,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:43,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-04-16 06:53:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:43,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:43,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:43,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:43,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578462065] [2021-04-16 06:53:43,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:43,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:53:43,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294177227] [2021-04-16 06:53:43,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:53:43,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:43,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:53:43,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:53:43,397 INFO L87 Difference]: Start difference. First operand 2746 states and 3378 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 06:53:49,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:53:49,298 INFO L93 Difference]: Finished difference Result 2825 states and 3471 transitions. [2021-04-16 06:53:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-16 06:53:49,303 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 76 [2021-04-16 06:53:49,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:53:49,306 INFO L225 Difference]: With dead ends: 2825 [2021-04-16 06:53:49,306 INFO L226 Difference]: Without dead ends: 2823 [2021-04-16 06:53:49,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2364.3ms TimeCoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2021-04-16 06:53:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2021-04-16 06:53:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2708. [2021-04-16 06:53:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2557 states have (on average 1.2205709816190848) internal successors, (3121), 2627 states have internal predecessors, (3121), 108 states have call successors, (108), 43 states have call predecessors, (108), 42 states have return successors, (107), 37 states have call predecessors, (107), 107 states have call successors, (107) [2021-04-16 06:53:50,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3336 transitions. [2021-04-16 06:53:50,993 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3336 transitions. Word has length 76 [2021-04-16 06:53:50,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:53:50,993 INFO L480 AbstractCegarLoop]: Abstraction has 2708 states and 3336 transitions. [2021-04-16 06:53:50,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 06:53:50,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3336 transitions. [2021-04-16 06:53:50,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-04-16 06:53:50,996 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:53:50,996 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:53:50,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-04-16 06:53:50,996 INFO L428 AbstractCegarLoop]: === Iteration 121 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:53:50,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:53:50,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1192708310, now seen corresponding path program 25 times [2021-04-16 06:53:50,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:53:50,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770774962] [2021-04-16 06:53:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:53:51,003 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:53:51,004 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:53:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:51,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:51,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:53:51,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:51,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:51,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:51,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:51,132 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:53:51,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:51,145 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-04-16 06:53:51,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:51,163 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-04-16 06:53:51,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:51,183 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-04-16 06:53:51,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:51,207 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-04-16 06:53:51,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:51,237 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-04-16 06:53:51,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:51,268 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:53:51,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:51,303 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-04-16 06:53:51,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:53:51,341 INFO L142 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-04-16 06:53:51,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:53:51,421 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-04-16 06:53:51,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:53:51,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:53:51,535 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-04-16 06:53:51,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:53:51,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:53:51,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:53:51,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:53:51,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:53:51,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:51,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:52,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:52,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:52,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-04-16 06:53:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:52,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:52,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:52,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770774962] [2021-04-16 06:53:52,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:52,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:53:52,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535600325] [2021-04-16 06:53:52,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:53:52,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:52,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:53:52,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:53:52,036 INFO L87 Difference]: Start difference. First operand 2708 states and 3336 transitions. Second operand has 21 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:53:57,167 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-04-16 06:54:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:54:07,810 INFO L93 Difference]: Finished difference Result 3581 states and 4414 transitions. [2021-04-16 06:54:07,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-04-16 06:54:07,816 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2021-04-16 06:54:07,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:54:07,822 INFO L225 Difference]: With dead ends: 3581 [2021-04-16 06:54:07,822 INFO L226 Difference]: Without dead ends: 3579 [2021-04-16 06:54:07,823 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3082 ImplicationChecksByTransitivity, 6645.5ms TimeCoverageRelationStatistics Valid=654, Invalid=9048, Unknown=0, NotChecked=0, Total=9702 [2021-04-16 06:54:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-04-16 06:54:09,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 2826. [2021-04-16 06:54:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2657 states have (on average 1.217538577342868) internal successors, (3235), 2735 states have internal predecessors, (3235), 122 states have call successors, (122), 47 states have call predecessors, (122), 46 states have return successors, (121), 43 states have call predecessors, (121), 121 states have call successors, (121) [2021-04-16 06:54:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3478 transitions. [2021-04-16 06:54:09,764 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3478 transitions. Word has length 74 [2021-04-16 06:54:09,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:54:09,764 INFO L480 AbstractCegarLoop]: Abstraction has 2826 states and 3478 transitions. [2021-04-16 06:54:09,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:54:09,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3478 transitions. [2021-04-16 06:54:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-04-16 06:54:09,766 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:54:09,767 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:54:09,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-04-16 06:54:09,767 INFO L428 AbstractCegarLoop]: === Iteration 122 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:54:09,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:54:09,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1837502160, now seen corresponding path program 26 times [2021-04-16 06:54:09,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:54:09,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850388657] [2021-04-16 06:54:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:54:09,775 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:54:09,776 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:54:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:09,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:09,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:09,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:09,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:09,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:09,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:09,883 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-04-16 06:54:09,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:54:09,940 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-04-16 06:54:09,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:09,977 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-04-16 06:54:09,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:10,021 INFO L142 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size [2021-04-16 06:54:10,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:54:10,087 INFO L142 QuantifierPusher]: treesize reduction 24, result has 4.0 percent of original size [2021-04-16 06:54:10,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:10,090 INFO L142 QuantifierPusher]: treesize reduction 27, result has 10.0 percent of original size [2021-04-16 06:54:10,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:10,105 INFO L142 QuantifierPusher]: treesize reduction 39, result has 32.8 percent of original size [2021-04-16 06:54:10,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:54:10,224 INFO L142 QuantifierPusher]: treesize reduction 39, result has 29.1 percent of original size [2021-04-16 06:54:10,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:54:10,330 INFO L142 QuantifierPusher]: treesize reduction 41, result has 22.6 percent of original size [2021-04-16 06:54:10,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:54:10,400 INFO L142 QuantifierPusher]: treesize reduction 32, result has 8.6 percent of original size [2021-04-16 06:54:10,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:10,415 INFO L142 QuantifierPusher]: treesize reduction 60, result has 7.7 percent of original size [2021-04-16 06:54:10,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:54:10,429 INFO L142 QuantifierPusher]: treesize reduction 60, result has 7.7 percent of original size [2021-04-16 06:54:10,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:54:10,445 INFO L142 QuantifierPusher]: treesize reduction 60, result has 7.7 percent of original size [2021-04-16 06:54:10,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:54:10,460 INFO L142 QuantifierPusher]: treesize reduction 63, result has 7.4 percent of original size [2021-04-16 06:54:10,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:54:10,478 INFO L142 QuantifierPusher]: treesize reduction 63, result has 7.4 percent of original size [2021-04-16 06:54:10,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:54:10,496 INFO L142 QuantifierPusher]: treesize reduction 63, result has 7.4 percent of original size [2021-04-16 06:54:10,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:54:10,514 INFO L142 QuantifierPusher]: treesize reduction 63, result has 7.4 percent of original size [2021-04-16 06:54:10,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:54:10,534 INFO L142 QuantifierPusher]: treesize reduction 42, result has 38.2 percent of original size [2021-04-16 06:54:10,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:54:10,601 INFO L142 QuantifierPusher]: treesize reduction 34, result has 43.3 percent of original size [2021-04-16 06:54:10,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:54:10,672 INFO L142 QuantifierPusher]: treesize reduction 36, result has 40.0 percent of original size [2021-04-16 06:54:10,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:54:10,748 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.6 percent of original size [2021-04-16 06:54:10,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:54:10,859 INFO L142 QuantifierPusher]: treesize reduction 16, result has 70.9 percent of original size [2021-04-16 06:54:10,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:54:10,970 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-04-16 06:54:10,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:54:11,059 INFO L142 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-04-16 06:54:11,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:54:11,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:54:11,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:54:11,356 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-04-16 06:54:11,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:54:11,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:54:11,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:54:11,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:54:11,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:54:11,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:54:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:12,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:12,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:12,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-04-16 06:54:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:12,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:12,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:54:12,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850388657] [2021-04-16 06:54:12,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:54:12,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-04-16 06:54:12,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544761200] [2021-04-16 06:54:12,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-04-16 06:54:12,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:54:12,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-04-16 06:54:12,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:54:12,012 INFO L87 Difference]: Start difference. First operand 2826 states and 3478 transitions. Second operand has 26 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:54:14,361 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-04-16 06:54:15,363 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-04-16 06:54:15,705 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-04-16 06:54:18,573 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 20 [2021-04-16 06:54:18,909 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2021-04-16 06:54:19,546 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2021-04-16 06:54:20,561 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-04-16 06:54:23,267 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 25 [2021-04-16 06:54:24,570 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-04-16 06:54:25,003 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2021-04-16 06:54:26,052 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 24 [2021-04-16 06:54:26,699 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-04-16 06:54:27,699 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2021-04-16 06:54:28,738 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2021-04-16 06:54:28,998 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-04-16 06:54:29,302 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2021-04-16 06:54:30,670 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2021-04-16 06:54:31,311 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-04-16 06:54:31,977 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-04-16 06:54:34,286 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2021-04-16 06:54:34,528 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2021-04-16 06:54:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:54:36,070 INFO L93 Difference]: Finished difference Result 3277 states and 4028 transitions. [2021-04-16 06:54:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-04-16 06:54:36,078 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2021-04-16 06:54:36,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:54:36,082 INFO L225 Difference]: With dead ends: 3277 [2021-04-16 06:54:36,082 INFO L226 Difference]: Without dead ends: 3275 [2021-04-16 06:54:36,083 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 6 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 11138.6ms TimeCoverageRelationStatistics Valid=586, Invalid=5734, Unknown=0, NotChecked=0, Total=6320 [2021-04-16 06:54:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2021-04-16 06:54:38,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2875. [2021-04-16 06:54:38,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2699 states have (on average 1.2171174509077436) internal successors, (3285), 2782 states have internal predecessors, (3285), 128 states have call successors, (128), 48 states have call predecessors, (128), 47 states have return successors, (127), 44 states have call predecessors, (127), 127 states have call successors, (127) [2021-04-16 06:54:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 3540 transitions. [2021-04-16 06:54:38,079 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 3540 transitions. Word has length 74 [2021-04-16 06:54:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:54:38,079 INFO L480 AbstractCegarLoop]: Abstraction has 2875 states and 3540 transitions. [2021-04-16 06:54:38,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:54:38,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 3540 transitions. [2021-04-16 06:54:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-04-16 06:54:38,081 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:54:38,081 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:54:38,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-04-16 06:54:38,081 INFO L428 AbstractCegarLoop]: === Iteration 123 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:54:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:54:38,082 INFO L82 PathProgramCache]: Analyzing trace with hash -344034646, now seen corresponding path program 27 times [2021-04-16 06:54:38,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:54:38,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537904091] [2021-04-16 06:54:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:54:38,090 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:54:38,091 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:54:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:38,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:38,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:38,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:38,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:38,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:38,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:38,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:38,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:38,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:38,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:38,258 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-04-16 06:54:38,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:54:38,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:38,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 06:54:38,324 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-04-16 06:54:38,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:38,339 INFO L142 QuantifierPusher]: treesize reduction 30, result has 41.2 percent of original size [2021-04-16 06:54:38,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:54:38,439 INFO L142 QuantifierPusher]: treesize reduction 30, result has 37.5 percent of original size [2021-04-16 06:54:38,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:54:38,547 INFO L142 QuantifierPusher]: treesize reduction 32, result has 30.4 percent of original size [2021-04-16 06:54:38,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:54:38,614 INFO L142 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size [2021-04-16 06:54:38,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:38,627 INFO L142 QuantifierPusher]: treesize reduction 37, result has 26.0 percent of original size [2021-04-16 06:54:38,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:54:38,699 INFO L142 QuantifierPusher]: treesize reduction 25, result has 62.7 percent of original size [2021-04-16 06:54:38,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:54:38,840 INFO L142 QuantifierPusher]: treesize reduction 37, result has 26.0 percent of original size [2021-04-16 06:54:38,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:54:38,843 INFO L142 QuantifierPusher]: treesize reduction 39, result has 25.0 percent of original size [2021-04-16 06:54:38,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:54:38,920 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-04-16 06:54:38,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:54:39,064 INFO L142 QuantifierPusher]: treesize reduction 21, result has 63.2 percent of original size [2021-04-16 06:54:39,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:54:39,223 INFO L142 QuantifierPusher]: treesize reduction 21, result has 71.6 percent of original size [2021-04-16 06:54:39,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:54:39,446 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2021-04-16 06:54:39,449 INFO L142 QuantifierPusher]: treesize reduction 21, result has 71.6 percent of original size [2021-04-16 06:54:39,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:54:39,615 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2021-04-16 06:54:39,618 INFO L142 QuantifierPusher]: treesize reduction 21, result has 70.4 percent of original size [2021-04-16 06:54:39,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:54:39,768 INFO L142 QuantifierPusher]: treesize reduction 21, result has 69.1 percent of original size [2021-04-16 06:54:39,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:54:39,906 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-04-16 06:54:39,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:54:39,997 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-04-16 06:54:39,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:54:40,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:40,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:54:40,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:40,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:54:40,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:40,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:54:40,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:40,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:54:40,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:40,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:54:40,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:40,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:54:40,581 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size [2021-04-16 06:54:40,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:54:40,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:40,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:54:40,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:40,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:54:40,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:40,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:54:40,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:40,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:54:41,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:41,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:41,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:54:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:41,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:41,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:41,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-04-16 06:54:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:41,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:41,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:54:41,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537904091] [2021-04-16 06:54:41,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:54:41,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-04-16 06:54:41,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046454086] [2021-04-16 06:54:41,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-04-16 06:54:41,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:54:41,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-04-16 06:54:41,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2021-04-16 06:54:41,242 INFO L87 Difference]: Start difference. First operand 2875 states and 3540 transitions. Second operand has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 30 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:54:44,242 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 12 [2021-04-16 06:54:44,538 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-04-16 06:54:45,431 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-04-16 06:54:47,120 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2021-04-16 06:54:47,813 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2021-04-16 06:54:49,109 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2021-04-16 06:54:50,985 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-04-16 06:54:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:54:53,496 INFO L93 Difference]: Finished difference Result 2958 states and 3641 transitions. [2021-04-16 06:54:53,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-04-16 06:54:53,503 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 30 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2021-04-16 06:54:53,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:54:53,507 INFO L225 Difference]: With dead ends: 2958 [2021-04-16 06:54:53,507 INFO L226 Difference]: Without dead ends: 2956 [2021-04-16 06:54:53,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 7157.8ms TimeCoverageRelationStatistics Valid=409, Invalid=3373, Unknown=0, NotChecked=0, Total=3782 [2021-04-16 06:54:53,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-04-16 06:54:55,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2902. [2021-04-16 06:54:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2724 states have (on average 1.2173274596182084) internal successors, (3316), 2809 states have internal predecessors, (3316), 130 states have call successors, (130), 48 states have call predecessors, (130), 47 states have return successors, (129), 44 states have call predecessors, (129), 129 states have call successors, (129) [2021-04-16 06:54:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 3575 transitions. [2021-04-16 06:54:55,454 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 3575 transitions. Word has length 74 [2021-04-16 06:54:55,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:54:55,454 INFO L480 AbstractCegarLoop]: Abstraction has 2902 states and 3575 transitions. [2021-04-16 06:54:55,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 30 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:54:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 3575 transitions. [2021-04-16 06:54:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-04-16 06:54:55,456 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:54:55,457 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:54:55,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-04-16 06:54:55,457 INFO L428 AbstractCegarLoop]: === Iteration 124 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:54:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:54:55,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1614776572, now seen corresponding path program 28 times [2021-04-16 06:54:55,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:54:55,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095521815] [2021-04-16 06:54:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:54:55,467 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:54:55,467 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:54:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:55,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:55,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:55,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:55,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:55,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:55,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:55,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:55,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:55,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:55,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:55,637 INFO L142 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-04-16 06:54:55,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:54:55,698 INFO L142 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-04-16 06:54:55,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:54:55,755 INFO L142 QuantifierPusher]: treesize reduction 24, result has 4.0 percent of original size [2021-04-16 06:54:55,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:55,758 INFO L142 QuantifierPusher]: treesize reduction 27, result has 10.0 percent of original size [2021-04-16 06:54:55,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:55,769 INFO L142 QuantifierPusher]: treesize reduction 40, result has 24.5 percent of original size [2021-04-16 06:54:55,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:54:55,840 INFO L142 QuantifierPusher]: treesize reduction 42, result has 40.0 percent of original size [2021-04-16 06:54:55,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:54:55,953 INFO L142 QuantifierPusher]: treesize reduction 42, result has 51.2 percent of original size [2021-04-16 06:54:55,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:54:56,143 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-04-16 06:54:56,147 INFO L142 QuantifierPusher]: treesize reduction 30, result has 67.7 percent of original size [2021-04-16 06:54:56,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:54:56,308 INFO L142 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-04-16 06:54:56,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:54:56,475 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-04-16 06:54:56,479 INFO L142 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-04-16 06:54:56,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:54:56,618 INFO L142 QuantifierPusher]: treesize reduction 39, result has 41.8 percent of original size [2021-04-16 06:54:56,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:54:56,703 INFO L142 QuantifierPusher]: treesize reduction 41, result has 41.4 percent of original size [2021-04-16 06:54:56,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:54:56,791 INFO L142 QuantifierPusher]: treesize reduction 15, result has 81.3 percent of original size [2021-04-16 06:54:56,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:54:56,949 INFO L142 QuantifierPusher]: treesize reduction 13, result has 75.9 percent of original size [2021-04-16 06:54:56,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:54:57,061 INFO L142 QuantifierPusher]: treesize reduction 13, result has 75.0 percent of original size [2021-04-16 06:54:57,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:54:57,175 INFO L142 QuantifierPusher]: treesize reduction 5, result has 89.6 percent of original size [2021-04-16 06:54:57,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:54:57,334 INFO L142 QuantifierPusher]: treesize reduction 5, result has 84.4 percent of original size [2021-04-16 06:54:57,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:54:57,411 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size [2021-04-16 06:54:57,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:54:57,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:57,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:54:57,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:57,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:54:57,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:57,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:54:57,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:57,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:54:58,052 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-04-16 06:54:58,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:54:58,216 INFO L142 QuantifierPusher]: treesize reduction 14, result has 67.4 percent of original size [2021-04-16 06:54:58,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:54:58,385 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-04-16 06:54:58,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:54:58,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:58,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:54:58,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:58,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:58,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:58,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:54:58,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:58,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:54:59,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:59,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:59,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:54:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:59,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:59,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:59,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-04-16 06:54:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:59,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:59,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:54:59,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095521815] [2021-04-16 06:54:59,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:54:59,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-04-16 06:54:59,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041480461] [2021-04-16 06:54:59,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-04-16 06:54:59,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:54:59,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-04-16 06:54:59,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2021-04-16 06:54:59,215 INFO L87 Difference]: Start difference. First operand 2902 states and 3575 transitions. Second operand has 33 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:55:00,861 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 11 [2021-04-16 06:55:01,119 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-04-16 06:55:01,811 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2021-04-16 06:55:02,382 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-04-16 06:55:03,378 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2021-04-16 06:55:06,931 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 24 [2021-04-16 06:55:07,536 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 26 [2021-04-16 06:55:08,538 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2021-04-16 06:55:09,113 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-04-16 06:55:12,179 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2021-04-16 06:55:13,919 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-04-16 06:55:15,842 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-04-16 06:55:16,095 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-04-16 06:55:16,833 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-04-16 06:55:17,310 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-04-16 06:55:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:55:18,054 INFO L93 Difference]: Finished difference Result 3118 states and 3827 transitions. [2021-04-16 06:55:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-04-16 06:55:18,061 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2021-04-16 06:55:18,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:55:18,065 INFO L225 Difference]: With dead ends: 3118 [2021-04-16 06:55:18,065 INFO L226 Difference]: Without dead ends: 3116 [2021-04-16 06:55:18,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 11852.3ms TimeCoverageRelationStatistics Valid=647, Invalid=5515, Unknown=0, NotChecked=0, Total=6162 [2021-04-16 06:55:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-04-16 06:55:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2863. [2021-04-16 06:55:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2687 states have (on average 1.216970599181243) internal successors, (3270), 2770 states have internal predecessors, (3270), 128 states have call successors, (128), 48 states have call predecessors, (128), 47 states have return successors, (127), 44 states have call predecessors, (127), 127 states have call successors, (127) [2021-04-16 06:55:20,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 3525 transitions. [2021-04-16 06:55:20,060 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 3525 transitions. Word has length 74 [2021-04-16 06:55:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:55:20,060 INFO L480 AbstractCegarLoop]: Abstraction has 2863 states and 3525 transitions. [2021-04-16 06:55:20,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:55:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 3525 transitions. [2021-04-16 06:55:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-04-16 06:55:20,062 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:55:20,063 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:55:20,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-04-16 06:55:20,063 INFO L428 AbstractCegarLoop]: === Iteration 125 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:55:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:55:20,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1089485352, now seen corresponding path program 21 times [2021-04-16 06:55:20,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:55:20,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280321480] [2021-04-16 06:55:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:55:20,070 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:55:20,071 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:55:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:20,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:20,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:20,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:20,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:20,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:55:20,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:55:20,208 INFO L142 QuantifierPusher]: treesize reduction 15, result has 40.0 percent of original size [2021-04-16 06:55:20,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:55:20,241 INFO L142 QuantifierPusher]: treesize reduction 15, result has 40.0 percent of original size [2021-04-16 06:55:20,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:55:20,279 INFO L142 QuantifierPusher]: treesize reduction 23, result has 48.9 percent of original size [2021-04-16 06:55:20,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:20,358 INFO L142 QuantifierPusher]: treesize reduction 32, result has 8.6 percent of original size [2021-04-16 06:55:20,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:55:20,400 INFO L142 QuantifierPusher]: treesize reduction 33, result has 17.5 percent of original size [2021-04-16 06:55:20,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:20,418 INFO L142 QuantifierPusher]: treesize reduction 52, result has 46.9 percent of original size [2021-04-16 06:55:20,421 INFO L147 QuantifierPusher]: treesize reduction 7, result has 84.8 percent of original size 39 [2021-04-16 06:55:20,543 INFO L142 QuantifierPusher]: treesize reduction 59, result has 50.0 percent of original size [2021-04-16 06:55:20,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:55:20,728 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2021-04-16 06:55:20,732 INFO L142 QuantifierPusher]: treesize reduction 59, result has 53.9 percent of original size [2021-04-16 06:55:20,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:55:20,976 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2021-04-16 06:55:20,981 INFO L142 QuantifierPusher]: treesize reduction 58, result has 53.6 percent of original size [2021-04-16 06:55:20,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:55:21,207 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2021-04-16 06:55:21,212 INFO L142 QuantifierPusher]: treesize reduction 42, result has 40.0 percent of original size [2021-04-16 06:55:21,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:55:21,317 INFO L142 QuantifierPusher]: treesize reduction 61, result has 33.7 percent of original size [2021-04-16 06:55:21,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:55:21,418 INFO L142 QuantifierPusher]: treesize reduction 64, result has 52.2 percent of original size [2021-04-16 06:55:21,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:55:21,626 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-04-16 06:55:21,630 INFO L142 QuantifierPusher]: treesize reduction 48, result has 71.8 percent of original size [2021-04-16 06:55:21,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-04-16 06:55:21,894 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2021-04-16 06:55:21,898 INFO L142 QuantifierPusher]: treesize reduction 69, result has 63.9 percent of original size [2021-04-16 06:55:21,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-04-16 06:55:22,230 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2021-04-16 06:55:22,234 INFO L142 QuantifierPusher]: treesize reduction 71, result has 62.4 percent of original size [2021-04-16 06:55:22,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-04-16 06:55:22,512 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2021-04-16 06:55:22,516 INFO L142 QuantifierPusher]: treesize reduction 77, result has 51.6 percent of original size [2021-04-16 06:55:22,518 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.2 percent of original size 74 [2021-04-16 06:55:22,817 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-04-16 06:55:22,821 INFO L142 QuantifierPusher]: treesize reduction 75, result has 56.1 percent of original size [2021-04-16 06:55:22,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-04-16 06:55:23,160 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-04-16 06:55:23,164 INFO L142 QuantifierPusher]: treesize reduction 75, result has 55.6 percent of original size [2021-04-16 06:55:23,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:55:23,462 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2021-04-16 06:55:23,466 INFO L142 QuantifierPusher]: treesize reduction 48, result has 37.7 percent of original size [2021-04-16 06:55:23,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:55:23,621 INFO L142 QuantifierPusher]: treesize reduction 50, result has 37.5 percent of original size [2021-04-16 06:55:23,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:55:23,769 INFO L142 QuantifierPusher]: treesize reduction 32, result has 64.4 percent of original size [2021-04-16 06:55:23,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 06:55:23,963 INFO L142 QuantifierPusher]: treesize reduction 33, result has 50.7 percent of original size [2021-04-16 06:55:23,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:55:24,132 INFO L142 QuantifierPusher]: treesize reduction 31, result has 52.3 percent of original size [2021-04-16 06:55:24,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:55:24,282 INFO L142 QuantifierPusher]: treesize reduction 23, result has 62.3 percent of original size [2021-04-16 06:55:24,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:55:24,450 INFO L142 QuantifierPusher]: treesize reduction 23, result has 48.9 percent of original size [2021-04-16 06:55:24,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:24,455 INFO L142 QuantifierPusher]: treesize reduction 23, result has 48.9 percent of original size [2021-04-16 06:55:24,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:24,591 INFO L142 QuantifierPusher]: treesize reduction 23, result has 70.1 percent of original size [2021-04-16 06:55:24,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-04-16 06:55:24,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:55:24,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:55:24,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:55:24,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:55:25,150 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-04-16 06:55:25,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:25,334 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:55:25,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:55:25,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:25,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:55:25,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:25,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:55:25,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:25,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:55:25,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:25,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:26,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:55:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:26,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:26,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:26,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-04-16 06:55:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:26,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:26,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:55:26,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280321480] [2021-04-16 06:55:26,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:55:26,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-04-16 06:55:26,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436890206] [2021-04-16 06:55:26,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-04-16 06:55:26,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:55:26,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-04-16 06:55:26,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2021-04-16 06:55:26,042 INFO L87 Difference]: Start difference. First operand 2863 states and 3525 transitions. Second operand has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 35 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:55:27,447 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 19 [2021-04-16 06:55:28,452 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 20 [2021-04-16 06:55:28,880 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-04-16 06:55:29,307 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2021-04-16 06:55:29,836 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-04-16 06:55:30,201 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2021-04-16 06:55:30,547 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2021-04-16 06:55:30,907 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 27 [2021-04-16 06:55:31,262 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-04-16 06:55:31,568 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 18 [2021-04-16 06:55:32,125 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-04-16 06:55:32,487 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 19 [2021-04-16 06:55:32,919 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-04-16 06:55:34,099 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 17 [2021-04-16 06:55:34,392 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2021-04-16 06:55:34,676 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2021-04-16 06:55:35,471 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 18 [2021-04-16 06:55:35,705 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 26 [2021-04-16 06:55:36,467 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-04-16 06:55:36,987 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2021-04-16 06:55:37,441 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-04-16 06:55:38,538 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2021-04-16 06:55:39,104 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2021-04-16 06:55:40,279 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2021-04-16 06:55:40,874 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2021-04-16 06:55:41,104 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 10 [2021-04-16 06:55:41,897 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 25 [2021-04-16 06:55:42,915 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2021-04-16 06:55:43,839 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2021-04-16 06:55:44,565 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2021-04-16 06:55:46,342 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-04-16 06:55:46,702 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2021-04-16 06:55:47,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:55:47,739 INFO L93 Difference]: Finished difference Result 2995 states and 3678 transitions. [2021-04-16 06:55:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-04-16 06:55:47,745 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 35 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2021-04-16 06:55:47,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:55:47,749 INFO L225 Difference]: With dead ends: 2995 [2021-04-16 06:55:47,749 INFO L226 Difference]: Without dead ends: 2993 [2021-04-16 06:55:47,750 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1787 ImplicationChecksByTransitivity, 16019.1ms TimeCoverageRelationStatistics Valid=638, Invalid=5842, Unknown=0, NotChecked=0, Total=6480 [2021-04-16 06:55:47,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2021-04-16 06:55:49,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2877. [2021-04-16 06:55:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2698 states have (on average 1.2164566345441068) internal successors, (3282), 2782 states have internal predecessors, (3282), 130 states have call successors, (130), 49 states have call predecessors, (130), 48 states have return successors, (129), 45 states have call predecessors, (129), 129 states have call successors, (129) [2021-04-16 06:55:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3541 transitions. [2021-04-16 06:55:49,687 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3541 transitions. Word has length 74 [2021-04-16 06:55:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:55:49,687 INFO L480 AbstractCegarLoop]: Abstraction has 2877 states and 3541 transitions. [2021-04-16 06:55:49,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 35 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:55:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3541 transitions. [2021-04-16 06:55:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-04-16 06:55:49,690 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:55:49,690 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:55:49,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-04-16 06:55:49,690 INFO L428 AbstractCegarLoop]: === Iteration 126 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:55:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:55:49,690 INFO L82 PathProgramCache]: Analyzing trace with hash 267447918, now seen corresponding path program 22 times [2021-04-16 06:55:49,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:55:49,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322822271] [2021-04-16 06:55:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:55:49,701 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:55:49,703 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:55:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:49,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:49,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:49,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:49,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:49,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:55:49,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:55:49,847 INFO L142 QuantifierPusher]: treesize reduction 15, result has 40.0 percent of original size [2021-04-16 06:55:49,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:55:49,881 INFO L142 QuantifierPusher]: treesize reduction 15, result has 40.0 percent of original size [2021-04-16 06:55:49,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:55:49,922 INFO L142 QuantifierPusher]: treesize reduction 15, result has 40.0 percent of original size [2021-04-16 06:55:49,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:55:49,965 INFO L142 QuantifierPusher]: treesize reduction 19, result has 45.7 percent of original size [2021-04-16 06:55:49,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:55:50,034 INFO L142 QuantifierPusher]: treesize reduction 24, result has 11.1 percent of original size [2021-04-16 06:55:50,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:55:50,070 INFO L142 QuantifierPusher]: treesize reduction 25, result has 21.9 percent of original size [2021-04-16 06:55:50,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:50,083 INFO L142 QuantifierPusher]: treesize reduction 75, result has 24.2 percent of original size [2021-04-16 06:55:50,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:55:50,205 INFO L142 QuantifierPusher]: treesize reduction 77, result has 34.2 percent of original size [2021-04-16 06:55:50,207 INFO L147 QuantifierPusher]: treesize reduction 7, result has 82.5 percent of original size 33 [2021-04-16 06:55:50,340 INFO L142 QuantifierPusher]: treesize reduction 79, result has 38.8 percent of original size [2021-04-16 06:55:50,342 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.0 percent of original size 43 [2021-04-16 06:55:50,506 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2021-04-16 06:55:50,510 INFO L142 QuantifierPusher]: treesize reduction 79, result has 37.3 percent of original size [2021-04-16 06:55:50,512 INFO L147 QuantifierPusher]: treesize reduction 7, result has 85.1 percent of original size 40 [2021-04-16 06:55:50,624 INFO L142 QuantifierPusher]: treesize reduction 47, result has 48.9 percent of original size [2021-04-16 06:55:50,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:55:50,741 INFO L142 QuantifierPusher]: treesize reduction 64, result has 43.4 percent of original size [2021-04-16 06:55:50,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:55:50,884 INFO L142 QuantifierPusher]: treesize reduction 66, result has 48.4 percent of original size [2021-04-16 06:55:50,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-04-16 06:55:51,091 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-04-16 06:55:51,095 INFO L142 QuantifierPusher]: treesize reduction 76, result has 59.4 percent of original size [2021-04-16 06:55:51,097 INFO L147 QuantifierPusher]: treesize reduction 7, result has 93.7 percent of original size 104 [2021-04-16 06:55:51,350 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 30 [2021-04-16 06:55:51,353 INFO L142 QuantifierPusher]: treesize reduction 83, result has 59.5 percent of original size [2021-04-16 06:55:51,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-04-16 06:55:51,586 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 29 [2021-04-16 06:55:51,590 INFO L142 QuantifierPusher]: treesize reduction 83, result has 58.9 percent of original size [2021-04-16 06:55:51,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-04-16 06:55:51,842 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 26 [2021-04-16 06:55:51,846 INFO L142 QuantifierPusher]: treesize reduction 47, result has 58.4 percent of original size [2021-04-16 06:55:51,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:55:52,180 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2021-04-16 06:55:52,185 INFO L142 QuantifierPusher]: treesize reduction 47, result has 57.7 percent of original size [2021-04-16 06:55:52,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:55:52,476 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2021-04-16 06:55:52,480 INFO L142 QuantifierPusher]: treesize reduction 63, result has 41.7 percent of original size [2021-04-16 06:55:52,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:55:52,656 INFO L142 QuantifierPusher]: treesize reduction 63, result has 31.5 percent of original size [2021-04-16 06:55:52,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:55:52,810 INFO L142 QuantifierPusher]: treesize reduction 65, result has 31.6 percent of original size [2021-04-16 06:55:52,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:55:52,982 INFO L142 QuantifierPusher]: treesize reduction 68, result has 42.9 percent of original size [2021-04-16 06:55:52,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-16 06:55:53,163 INFO L142 QuantifierPusher]: treesize reduction 65, result has 31.6 percent of original size [2021-04-16 06:55:53,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:55:53,168 INFO L142 QuantifierPusher]: treesize reduction 64, result has 31.9 percent of original size [2021-04-16 06:55:53,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:55:53,316 INFO L142 QuantifierPusher]: treesize reduction 33, result has 70.3 percent of original size [2021-04-16 06:55:53,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:55:53,538 INFO L142 QuantifierPusher]: treesize reduction 31, result has 61.7 percent of original size [2021-04-16 06:55:53,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:55:53,731 INFO L142 QuantifierPusher]: treesize reduction 29, result has 51.7 percent of original size [2021-04-16 06:55:53,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:55:53,911 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-04-16 06:55:53,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:55:54,095 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-04-16 06:55:54,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:55:54,305 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:55:54,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:55:54,478 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-04-16 06:55:54,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:54,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:55:54,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:55:54,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:54,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:55:55,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:55,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:55:55,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:55,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:55:55,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:55,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:55,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:55:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:55,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:55,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:55,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-04-16 06:55:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:55,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:55,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:55:55,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322822271] [2021-04-16 06:55:55,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:55:55,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-04-16 06:55:55,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576460485] [2021-04-16 06:55:55,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-04-16 06:55:55,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:55:55,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-04-16 06:55:55,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406 [2021-04-16 06:55:55,490 INFO L87 Difference]: Start difference. First operand 2877 states and 3541 transitions. Second operand has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 36 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:55:57,177 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2021-04-16 06:55:58,118 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 20 [2021-04-16 06:55:58,432 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2021-04-16 06:55:59,004 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2021-04-16 06:55:59,748 WARN L205 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2021-04-16 06:56:00,446 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-04-16 06:56:00,767 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2021-04-16 06:56:01,232 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-04-16 06:56:01,609 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-04-16 06:56:01,973 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-04-16 06:56:02,209 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-04-16 06:56:03,089 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-04-16 06:56:04,011 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-04-16 06:56:04,448 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 11 [2021-04-16 06:56:05,721 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2021-04-16 06:56:05,989 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 12 [2021-04-16 06:56:06,438 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-04-16 06:56:06,665 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2021-04-16 06:56:07,080 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2021-04-16 06:56:07,485 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-04-16 06:56:07,715 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 23 [2021-04-16 06:56:08,184 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 24 [2021-04-16 06:56:09,208 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 24 [2021-04-16 06:56:09,515 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 12 [2021-04-16 06:56:09,774 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2021-04-16 06:56:10,701 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2021-04-16 06:56:10,994 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2021-04-16 06:56:11,334 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 25 [2021-04-16 06:56:11,962 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-04-16 06:56:12,509 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2021-04-16 06:56:12,769 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2021-04-16 06:56:14,295 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 12 [2021-04-16 06:56:14,889 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2021-04-16 06:56:15,628 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2021-04-16 06:56:16,067 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-04-16 06:56:16,469 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2021-04-16 06:56:17,422 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2021-04-16 06:56:17,920 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2021-04-16 06:56:18,365 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2021-04-16 06:56:19,118 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-04-16 06:56:20,125 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-04-16 06:56:20,670 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-04-16 06:56:21,771 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-04-16 06:56:23,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:56:23,053 INFO L93 Difference]: Finished difference Result 3508 states and 4297 transitions. [2021-04-16 06:56:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-04-16 06:56:23,061 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 36 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2021-04-16 06:56:23,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:56:23,066 INFO L225 Difference]: With dead ends: 3508 [2021-04-16 06:56:23,066 INFO L226 Difference]: Without dead ends: 3506 [2021-04-16 06:56:23,067 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2767 ImplicationChecksByTransitivity, 20498.9ms TimeCoverageRelationStatistics Valid=887, Invalid=8815, Unknown=0, NotChecked=0, Total=9702 [2021-04-16 06:56:23,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2021-04-16 06:56:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 2826. [2021-04-16 06:56:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2654 states have (on average 1.217407686510927) internal successors, (3231), 2737 states have internal predecessors, (3231), 125 states have call successors, (125), 47 states have call predecessors, (125), 46 states have return successors, (124), 41 states have call predecessors, (124), 124 states have call successors, (124) [2021-04-16 06:56:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3480 transitions. [2021-04-16 06:56:24,951 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3480 transitions. Word has length 74 [2021-04-16 06:56:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:56:24,951 INFO L480 AbstractCegarLoop]: Abstraction has 2826 states and 3480 transitions. [2021-04-16 06:56:24,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 36 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:56:24,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3480 transitions. [2021-04-16 06:56:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-04-16 06:56:24,954 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:56:24,954 INFO L519 BasicCegarLoop]: trace histogram [10, 9, 6, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:56:24,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-04-16 06:56:24,954 INFO L428 AbstractCegarLoop]: === Iteration 127 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:56:24,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:56:24,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1570581088, now seen corresponding path program 23 times [2021-04-16 06:56:24,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:56:24,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246516756] [2021-04-16 06:56:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:56:24,963 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:56:24,964 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:56:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:25,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:25,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:25,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:25,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:25,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:25,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:25,085 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:56:25,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:56:25,167 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-04-16 06:56:25,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:56:25,187 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:56:25,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:56:25,273 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:56:25,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:56:25,278 INFO L142 QuantifierPusher]: treesize reduction 46, result has 63.5 percent of original size [2021-04-16 06:56:25,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:56:25,401 INFO L142 QuantifierPusher]: treesize reduction 46, result has 63.5 percent of original size [2021-04-16 06:56:25,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:56:25,405 INFO L142 QuantifierPusher]: treesize reduction 26, result has 59.4 percent of original size [2021-04-16 06:56:25,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:56:25,506 INFO L142 QuantifierPusher]: treesize reduction 26, result has 59.4 percent of original size [2021-04-16 06:56:25,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:56:25,513 INFO L142 QuantifierPusher]: treesize reduction 36, result has 33.3 percent of original size [2021-04-16 06:56:25,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:56:25,573 INFO L142 QuantifierPusher]: treesize reduction 38, result has 35.6 percent of original size [2021-04-16 06:56:25,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:56:25,592 INFO L142 QuantifierPusher]: treesize reduction 36, result has 43.8 percent of original size [2021-04-16 06:56:25,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:56:25,609 INFO L142 QuantifierPusher]: treesize reduction 36, result has 41.0 percent of original size [2021-04-16 06:56:25,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:56:25,626 INFO L142 QuantifierPusher]: treesize reduction 38, result has 35.6 percent of original size [2021-04-16 06:56:25,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:56:25,642 INFO L142 QuantifierPusher]: treesize reduction 38, result has 35.6 percent of original size [2021-04-16 06:56:25,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:56:25,659 INFO L142 QuantifierPusher]: treesize reduction 42, result has 60.0 percent of original size [2021-04-16 06:56:25,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:56:25,683 INFO L142 QuantifierPusher]: treesize reduction 42, result has 60.0 percent of original size [2021-04-16 06:56:25,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:56:25,706 INFO L142 QuantifierPusher]: treesize reduction 42, result has 60.0 percent of original size [2021-04-16 06:56:25,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:56:25,730 INFO L142 QuantifierPusher]: treesize reduction 44, result has 58.9 percent of original size [2021-04-16 06:56:25,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:56:25,757 INFO L142 QuantifierPusher]: treesize reduction 45, result has 62.5 percent of original size [2021-04-16 06:56:25,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:56:25,876 INFO L142 QuantifierPusher]: treesize reduction 42, result has 61.1 percent of original size [2021-04-16 06:56:25,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:56:25,990 INFO L142 QuantifierPusher]: treesize reduction 102, result has 39.3 percent of original size [2021-04-16 06:56:25,992 INFO L147 QuantifierPusher]: treesize reduction 7, result has 89.4 percent of original size 59 [2021-04-16 06:56:26,156 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 17 [2021-04-16 06:56:26,160 INFO L142 QuantifierPusher]: treesize reduction 101, result has 44.8 percent of original size [2021-04-16 06:56:26,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:56:26,475 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 21 [2021-04-16 06:56:26,479 INFO L142 QuantifierPusher]: treesize reduction 105, result has 47.0 percent of original size [2021-04-16 06:56:26,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:56:26,720 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 25 [2021-04-16 06:56:26,725 INFO L142 QuantifierPusher]: treesize reduction 101, result has 47.4 percent of original size [2021-04-16 06:56:26,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-04-16 06:56:26,933 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2021-04-16 06:56:26,937 INFO L142 QuantifierPusher]: treesize reduction 41, result has 63.1 percent of original size [2021-04-16 06:56:26,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:56:27,086 INFO L142 QuantifierPusher]: treesize reduction 40, result has 63.3 percent of original size [2021-04-16 06:56:27,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-16 06:56:27,229 INFO L142 QuantifierPusher]: treesize reduction 27, result has 77.5 percent of original size [2021-04-16 06:56:27,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:56:27,422 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2021-04-16 06:56:27,426 INFO L142 QuantifierPusher]: treesize reduction 52, result has 69.4 percent of original size [2021-04-16 06:56:27,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-04-16 06:56:27,775 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 26 [2021-04-16 06:56:27,778 INFO L142 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-04-16 06:56:27,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:56:27,956 INFO L142 QuantifierPusher]: treesize reduction 23, result has 77.2 percent of original size [2021-04-16 06:56:27,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:56:28,145 INFO L142 QuantifierPusher]: treesize reduction 34, result has 69.9 percent of original size [2021-04-16 06:56:28,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:56:28,401 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2021-04-16 06:56:28,405 INFO L142 QuantifierPusher]: treesize reduction 36, result has 67.6 percent of original size [2021-04-16 06:56:28,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:56:28,521 INFO L142 QuantifierPusher]: treesize reduction 18, result has 77.8 percent of original size [2021-04-16 06:56:28,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:56:28,752 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2021-04-16 06:56:28,756 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.6 percent of original size [2021-04-16 06:56:28,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:56:28,987 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.4 percent of original size [2021-04-16 06:56:28,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:56:29,190 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:56:29,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:56:29,336 INFO L142 QuantifierPusher]: treesize reduction 24, result has 54.7 percent of original size [2021-04-16 06:56:29,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:56:29,513 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:56:29,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:56:29,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:29,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:56:29,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:29,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:56:29,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:29,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:56:29,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:29,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:30,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:56:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:30,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:30,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:30,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-04-16 06:56:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:30,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:30,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:56:30,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246516756] [2021-04-16 06:56:30,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:56:30,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:56:30,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380128515] [2021-04-16 06:56:30,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:56:30,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:56:30,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:56:30,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:56:30,096 INFO L87 Difference]: Start difference. First operand 2826 states and 3480 transitions. Second operand has 31 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:56:32,145 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-04-16 06:56:34,714 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-04-16 06:56:35,015 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-04-16 06:56:35,772 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-04-16 06:56:37,855 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2021-04-16 06:56:38,726 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2021-04-16 06:56:39,213 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2021-04-16 06:56:39,757 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-04-16 06:56:40,840 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2021-04-16 06:56:41,643 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-04-16 06:56:42,518 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2021-04-16 06:56:43,319 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-04-16 06:56:44,676 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2021-04-16 06:56:45,113 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2021-04-16 06:56:46,174 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-04-16 06:56:46,532 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-04-16 06:56:48,203 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-04-16 06:56:48,888 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-04-16 06:56:49,524 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-04-16 06:56:49,945 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-04-16 06:56:50,874 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2021-04-16 06:56:51,943 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-04-16 06:56:54,738 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-04-16 06:56:55,043 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-04-16 06:56:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:56:55,785 INFO L93 Difference]: Finished difference Result 3106 states and 3816 transitions. [2021-04-16 06:56:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-04-16 06:56:55,793 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 75 [2021-04-16 06:56:55,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:56:55,798 INFO L225 Difference]: With dead ends: 3106 [2021-04-16 06:56:55,798 INFO L226 Difference]: Without dead ends: 3104 [2021-04-16 06:56:55,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 10 SyntacticMatches, 11 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 16957.2ms TimeCoverageRelationStatistics Valid=705, Invalid=7305, Unknown=0, NotChecked=0, Total=8010 [2021-04-16 06:56:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-04-16 06:56:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2865. [2021-04-16 06:56:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2696 states have (on average 1.218100890207715) internal successors, (3284), 2776 states have internal predecessors, (3284), 122 states have call successors, (122), 47 states have call predecessors, (122), 46 states have return successors, (121), 41 states have call predecessors, (121), 121 states have call successors, (121) [2021-04-16 06:56:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 3527 transitions. [2021-04-16 06:56:57,856 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 3527 transitions. Word has length 75 [2021-04-16 06:56:57,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:56:57,856 INFO L480 AbstractCegarLoop]: Abstraction has 2865 states and 3527 transitions. [2021-04-16 06:56:57,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:56:57,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 3527 transitions. [2021-04-16 06:56:57,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-04-16 06:56:57,859 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:56:57,859 INFO L519 BasicCegarLoop]: trace histogram [10, 9, 6, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:56:57,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-04-16 06:56:57,860 INFO L428 AbstractCegarLoop]: === Iteration 128 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:56:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:56:57,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1100612134, now seen corresponding path program 24 times [2021-04-16 06:56:57,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:56:57,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032923783] [2021-04-16 06:56:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:56:57,875 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:56:57,876 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:56:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:57,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:57,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:57,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:57,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:58,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:58,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:58,008 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:56:58,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:56:58,113 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:56:58,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:56:58,119 INFO L142 QuantifierPusher]: treesize reduction 22, result has 65.1 percent of original size [2021-04-16 06:56:58,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:56:58,226 INFO L142 QuantifierPusher]: treesize reduction 22, result has 65.1 percent of original size [2021-04-16 06:56:58,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:56:58,232 INFO L142 QuantifierPusher]: treesize reduction 50, result has 61.5 percent of original size [2021-04-16 06:56:58,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:56:58,396 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 10 [2021-04-16 06:56:58,402 INFO L142 QuantifierPusher]: treesize reduction 50, result has 61.5 percent of original size [2021-04-16 06:56:58,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-04-16 06:56:58,410 INFO L142 QuantifierPusher]: treesize reduction 28, result has 53.3 percent of original size [2021-04-16 06:56:58,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:56:58,534 INFO L142 QuantifierPusher]: treesize reduction 28, result has 53.3 percent of original size [2021-04-16 06:56:58,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 06:56:58,540 INFO L142 QuantifierPusher]: treesize reduction 34, result has 34.6 percent of original size [2021-04-16 06:56:58,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:56:58,617 INFO L142 QuantifierPusher]: treesize reduction 36, result has 36.8 percent of original size [2021-04-16 06:56:58,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:56:58,640 INFO L142 QuantifierPusher]: treesize reduction 34, result has 45.2 percent of original size [2021-04-16 06:56:58,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:56:58,664 INFO L142 QuantifierPusher]: treesize reduction 34, result has 42.4 percent of original size [2021-04-16 06:56:58,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:56:58,691 INFO L142 QuantifierPusher]: treesize reduction 36, result has 36.8 percent of original size [2021-04-16 06:56:58,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:56:58,718 INFO L142 QuantifierPusher]: treesize reduction 36, result has 36.8 percent of original size [2021-04-16 06:56:58,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:56:58,743 INFO L142 QuantifierPusher]: treesize reduction 42, result has 60.4 percent of original size [2021-04-16 06:56:58,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:56:58,779 INFO L142 QuantifierPusher]: treesize reduction 44, result has 57.7 percent of original size [2021-04-16 06:56:58,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-04-16 06:56:58,945 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2021-04-16 06:56:58,950 INFO L142 QuantifierPusher]: treesize reduction 105, result has 36.4 percent of original size [2021-04-16 06:56:58,952 INFO L147 QuantifierPusher]: treesize reduction 7, result has 88.3 percent of original size 53 [2021-04-16 06:56:59,109 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2021-04-16 06:56:59,115 INFO L142 QuantifierPusher]: treesize reduction 104, result has 42.2 percent of original size [2021-04-16 06:56:59,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:56:59,372 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2021-04-16 06:56:59,378 INFO L142 QuantifierPusher]: treesize reduction 104, result has 45.8 percent of original size [2021-04-16 06:56:59,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-04-16 06:56:59,661 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2021-04-16 06:56:59,666 INFO L142 QuantifierPusher]: treesize reduction 104, result has 45.0 percent of original size [2021-04-16 06:56:59,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-04-16 06:56:59,885 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 22 [2021-04-16 06:56:59,889 INFO L142 QuantifierPusher]: treesize reduction 42, result has 60.4 percent of original size [2021-04-16 06:56:59,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:57:00,053 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2021-04-16 06:57:00,057 INFO L142 QuantifierPusher]: treesize reduction 44, result has 59.3 percent of original size [2021-04-16 06:57:00,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 06:57:00,220 INFO L142 QuantifierPusher]: treesize reduction 67, result has 68.1 percent of original size [2021-04-16 06:57:00,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-04-16 06:57:00,731 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2021-04-16 06:57:00,734 INFO L142 QuantifierPusher]: treesize reduction 30, result has 72.0 percent of original size [2021-04-16 06:57:00,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:57:00,949 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2021-04-16 06:57:00,953 INFO L142 QuantifierPusher]: treesize reduction 32, result has 63.6 percent of original size [2021-04-16 06:57:00,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:57:01,020 INFO L142 QuantifierPusher]: treesize reduction 32, result has 63.2 percent of original size [2021-04-16 06:57:01,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-04-16 06:57:01,203 INFO L142 QuantifierPusher]: treesize reduction 32, result has 71.2 percent of original size [2021-04-16 06:57:01,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:57:01,431 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2021-04-16 06:57:01,435 INFO L142 QuantifierPusher]: treesize reduction 44, result has 71.8 percent of original size [2021-04-16 06:57:01,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-04-16 06:57:01,760 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2021-04-16 06:57:01,765 INFO L142 QuantifierPusher]: treesize reduction 34, result has 61.4 percent of original size [2021-04-16 06:57:01,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-04-16 06:57:01,982 INFO L142 QuantifierPusher]: treesize reduction 31, result has 69.9 percent of original size [2021-04-16 06:57:01,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:57:02,188 INFO L142 QuantifierPusher]: treesize reduction 42, result has 65.3 percent of original size [2021-04-16 06:57:02,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-04-16 06:57:02,505 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2021-04-16 06:57:02,510 INFO L142 QuantifierPusher]: treesize reduction 44, result has 63.0 percent of original size [2021-04-16 06:57:02,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:57:02,661 INFO L142 QuantifierPusher]: treesize reduction 18, result has 77.8 percent of original size [2021-04-16 06:57:02,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 06:57:02,957 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2021-04-16 06:57:02,962 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.6 percent of original size [2021-04-16 06:57:02,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:57:03,253 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2021-04-16 06:57:03,259 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.4 percent of original size [2021-04-16 06:57:03,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:57:03,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-04-16 06:57:03,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:57:03,741 INFO L142 QuantifierPusher]: treesize reduction 32, result has 47.5 percent of original size [2021-04-16 06:57:03,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:57:03,971 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-04-16 06:57:03,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:57:04,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:04,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:57:04,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:04,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:57:04,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:04,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:57:04,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:04,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:04,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:57:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:04,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:04,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-04-16 06:57:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:04,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:04,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:57:04,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032923783] [2021-04-16 06:57:04,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:57:04,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-04-16 06:57:04,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326318760] [2021-04-16 06:57:04,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-04-16 06:57:04,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:57:04,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-04-16 06:57:04,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2021-04-16 06:57:04,780 INFO L87 Difference]: Start difference. First operand 2865 states and 3527 transitions. Second operand has 33 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:57:06,559 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-04-16 06:57:07,286 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-04-16 06:57:07,500 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-04-16 06:57:09,394 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-04-16 06:57:10,729 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2021-04-16 06:57:11,367 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-04-16 06:57:11,855 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-04-16 06:57:12,771 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-04-16 06:57:14,402 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-04-16 06:57:14,612 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-04-16 06:57:15,069 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2021-04-16 06:57:15,951 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2021-04-16 06:57:16,550 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2021-04-16 06:57:16,913 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-04-16 06:57:17,346 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-04-16 06:57:17,905 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-04-16 06:57:18,749 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-04-16 06:57:19,404 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-04-16 06:57:20,576 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-04-16 06:57:21,813 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-04-16 06:57:22,307 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2021-04-16 06:57:22,750 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-04-16 06:57:23,666 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-04-16 06:57:24,991 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-04-16 06:57:25,747 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2021-04-16 06:57:26,141 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2021-04-16 06:57:26,619 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2021-04-16 06:57:27,546 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-04-16 06:57:27,840 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2021-04-16 06:57:28,429 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-04-16 06:57:29,611 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2021-04-16 06:57:30,011 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-04-16 06:57:31,931 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-04-16 06:57:32,330 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2021-04-16 06:57:32,854 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-04-16 06:57:33,285 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-04-16 06:57:33,639 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2021-04-16 06:57:37,450 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2021-04-16 06:57:37,838 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-04-16 06:57:38,201 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-04-16 06:57:38,509 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-04-16 06:57:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:57:39,516 INFO L93 Difference]: Finished difference Result 3298 states and 4037 transitions. [2021-04-16 06:57:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-04-16 06:57:39,523 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 75 [2021-04-16 06:57:39,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:57:39,528 INFO L225 Difference]: With dead ends: 3298 [2021-04-16 06:57:39,528 INFO L226 Difference]: Without dead ends: 3296 [2021-04-16 06:57:39,530 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 11 SyntacticMatches, 8 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3800 ImplicationChecksByTransitivity, 23662.2ms TimeCoverageRelationStatistics Valid=972, Invalid=10800, Unknown=0, NotChecked=0, Total=11772 [2021-04-16 06:57:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3296 states. [2021-04-16 06:57:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 2859. [2021-04-16 06:57:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2699 states have (on average 1.2208225268618007) internal successors, (3295), 2776 states have internal predecessors, (3295), 116 states have call successors, (116), 44 states have call predecessors, (116), 43 states have return successors, (115), 38 states have call predecessors, (115), 115 states have call successors, (115) [2021-04-16 06:57:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3526 transitions. [2021-04-16 06:57:41,421 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3526 transitions. Word has length 75 [2021-04-16 06:57:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:57:41,422 INFO L480 AbstractCegarLoop]: Abstraction has 2859 states and 3526 transitions. [2021-04-16 06:57:41,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:57:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3526 transitions. [2021-04-16 06:57:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-04-16 06:57:41,424 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:57:41,424 INFO L519 BasicCegarLoop]: trace histogram [10, 8, 6, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:57:41,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-04-16 06:57:41,425 INFO L428 AbstractCegarLoop]: === Iteration 129 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:57:41,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:57:41,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1589949918, now seen corresponding path program 25 times [2021-04-16 06:57:41,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:57:41,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065666227] [2021-04-16 06:57:41,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:57:41,433 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:57:41,434 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:57:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:41,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:41,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:41,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:41,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:41,530 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:57:41,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:57:41,609 INFO L142 QuantifierPusher]: treesize reduction 22, result has 60.7 percent of original size [2021-04-16 06:57:41,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:57:41,692 INFO L142 QuantifierPusher]: treesize reduction 55, result has 57.0 percent of original size [2021-04-16 06:57:41,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:57:41,814 INFO L142 QuantifierPusher]: treesize reduction 42, result has 36.4 percent of original size [2021-04-16 06:57:41,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:57:41,909 INFO L142 QuantifierPusher]: treesize reduction 43, result has 6.5 percent of original size [2021-04-16 06:57:41,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:57:41,946 INFO L142 QuantifierPusher]: treesize reduction 54, result has 11.5 percent of original size [2021-04-16 06:57:41,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:41,965 INFO L142 QuantifierPusher]: treesize reduction 56, result has 46.2 percent of original size [2021-04-16 06:57:41,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:57:41,990 INFO L142 QuantifierPusher]: treesize reduction 57, result has 53.3 percent of original size [2021-04-16 06:57:41,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:57:42,123 INFO L142 QuantifierPusher]: treesize reduction 60, result has 52.4 percent of original size [2021-04-16 06:57:42,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:57:42,259 INFO L142 QuantifierPusher]: treesize reduction 60, result has 54.5 percent of original size [2021-04-16 06:57:42,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:57:42,307 INFO L142 QuantifierPusher]: treesize reduction 60, result has 58.9 percent of original size [2021-04-16 06:57:42,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 06:57:42,526 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2021-04-16 06:57:42,531 INFO L142 QuantifierPusher]: treesize reduction 91, result has 53.8 percent of original size [2021-04-16 06:57:42,538 INFO L147 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size 98 [2021-04-16 06:57:42,815 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2021-04-16 06:57:42,820 INFO L142 QuantifierPusher]: treesize reduction 89, result has 58.0 percent of original size [2021-04-16 06:57:42,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-04-16 06:57:43,292 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-04-16 06:57:43,297 INFO L142 QuantifierPusher]: treesize reduction 89, result has 57.8 percent of original size [2021-04-16 06:57:43,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-04-16 06:57:43,724 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2021-04-16 06:57:43,729 INFO L142 QuantifierPusher]: treesize reduction 56, result has 54.1 percent of original size [2021-04-16 06:57:43,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:57:43,900 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 20 [2021-04-16 06:57:43,905 INFO L142 QuantifierPusher]: treesize reduction 58, result has 53.2 percent of original size [2021-04-16 06:57:43,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:57:44,083 INFO L142 QuantifierPusher]: treesize reduction 76, result has 61.8 percent of original size [2021-04-16 06:57:44,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-04-16 06:57:44,444 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2021-04-16 06:57:44,448 INFO L142 QuantifierPusher]: treesize reduction 58, result has 53.2 percent of original size [2021-04-16 06:57:44,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-16 06:57:44,453 INFO L142 QuantifierPusher]: treesize reduction 57, result has 53.3 percent of original size [2021-04-16 06:57:44,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:57:44,636 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 19 [2021-04-16 06:57:44,641 INFO L142 QuantifierPusher]: treesize reduction 44, result has 66.9 percent of original size [2021-04-16 06:57:44,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-04-16 06:57:44,855 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2021-04-16 06:57:44,860 INFO L142 QuantifierPusher]: treesize reduction 69, result has 60.6 percent of original size [2021-04-16 06:57:44,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-04-16 06:57:45,283 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2021-04-16 06:57:45,286 INFO L142 QuantifierPusher]: treesize reduction 24, result has 70.0 percent of original size [2021-04-16 06:57:45,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-04-16 06:57:45,476 INFO L142 QuantifierPusher]: treesize reduction 23, result has 76.3 percent of original size [2021-04-16 06:57:45,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:57:45,703 INFO L142 QuantifierPusher]: treesize reduction 34, result has 70.4 percent of original size [2021-04-16 06:57:45,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:57:45,978 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2021-04-16 06:57:45,983 INFO L142 QuantifierPusher]: treesize reduction 36, result has 68.1 percent of original size [2021-04-16 06:57:45,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:57:46,126 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.3 percent of original size [2021-04-16 06:57:46,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 06:57:46,397 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-04-16 06:57:46,402 INFO L142 QuantifierPusher]: treesize reduction 18, result has 81.1 percent of original size [2021-04-16 06:57:46,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:57:46,668 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2021-04-16 06:57:46,673 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.9 percent of original size [2021-04-16 06:57:46,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:57:46,924 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:57:46,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:57:47,078 INFO L142 QuantifierPusher]: treesize reduction 32, result has 49.2 percent of original size [2021-04-16 06:57:47,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:57:47,299 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:57:47,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:57:47,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:47,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:57:47,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:47,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:57:47,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:47,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:57:47,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:47,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:47,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:57:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:47,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:47,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-04-16 06:57:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:48,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:48,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:57:48,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065666227] [2021-04-16 06:57:48,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:57:48,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-04-16 06:57:48,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912353387] [2021-04-16 06:57:48,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-04-16 06:57:48,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:57:48,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-04-16 06:57:48,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2021-04-16 06:57:48,004 INFO L87 Difference]: Start difference. First operand 2859 states and 3526 transitions. Second operand has 33 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:57:49,456 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-04-16 06:57:50,676 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 15 [2021-04-16 06:57:51,322 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2021-04-16 06:57:52,348 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-04-16 06:57:52,707 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-04-16 06:57:53,577 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-04-16 06:57:54,533 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-04-16 06:57:54,833 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-04-16 06:57:55,547 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-04-16 06:57:56,201 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-04-16 06:57:56,871 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-04-16 06:57:57,460 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2021-04-16 06:57:58,248 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-04-16 06:57:58,685 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-04-16 06:57:59,171 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-04-16 06:58:00,464 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-04-16 06:58:02,640 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-04-16 06:58:07,733 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-04-16 06:58:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:58:11,697 INFO L93 Difference]: Finished difference Result 3068 states and 3776 transitions. [2021-04-16 06:58:11,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-04-16 06:58:11,705 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 75 [2021-04-16 06:58:11,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:58:11,710 INFO L225 Difference]: With dead ends: 3068 [2021-04-16 06:58:11,710 INFO L226 Difference]: Without dead ends: 3066 [2021-04-16 06:58:11,711 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1813 ImplicationChecksByTransitivity, 15242.2ms TimeCoverageRelationStatistics Valid=516, Invalid=5646, Unknown=0, NotChecked=0, Total=6162 [2021-04-16 06:58:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-04-16 06:58:13,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2859. [2021-04-16 06:58:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2699 states have (on average 1.2208225268618007) internal successors, (3295), 2776 states have internal predecessors, (3295), 116 states have call successors, (116), 44 states have call predecessors, (116), 43 states have return successors, (115), 38 states have call predecessors, (115), 115 states have call successors, (115) [2021-04-16 06:58:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3526 transitions. [2021-04-16 06:58:13,678 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3526 transitions. Word has length 75 [2021-04-16 06:58:13,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:58:13,678 INFO L480 AbstractCegarLoop]: Abstraction has 2859 states and 3526 transitions. [2021-04-16 06:58:13,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:58:13,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3526 transitions. [2021-04-16 06:58:13,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-04-16 06:58:13,680 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:58:13,681 INFO L519 BasicCegarLoop]: trace histogram [10, 8, 6, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:58:13,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-04-16 06:58:13,681 INFO L428 AbstractCegarLoop]: === Iteration 130 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:58:13,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:58:13,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1924650392, now seen corresponding path program 26 times [2021-04-16 06:58:13,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:58:13,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757626121] [2021-04-16 06:58:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:58:13,693 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:58:13,694 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:58:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:13,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:13,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:13,824 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-04-16 06:58:13,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:58:13,911 INFO L142 QuantifierPusher]: treesize reduction 22, result has 65.1 percent of original size [2021-04-16 06:58:13,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:58:14,005 INFO L142 QuantifierPusher]: treesize reduction 50, result has 58.7 percent of original size [2021-04-16 06:58:14,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:58:14,179 INFO L142 QuantifierPusher]: treesize reduction 32, result has 48.4 percent of original size [2021-04-16 06:58:14,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:58:14,279 INFO L142 QuantifierPusher]: treesize reduction 36, result has 33.3 percent of original size [2021-04-16 06:58:14,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:58:14,343 INFO L142 QuantifierPusher]: treesize reduction 50, result has 34.2 percent of original size [2021-04-16 06:58:14,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:58:14,362 INFO L142 QuantifierPusher]: treesize reduction 58, result has 40.8 percent of original size [2021-04-16 06:58:14,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 06:58:14,477 INFO L142 QuantifierPusher]: treesize reduction 46, result has 31.3 percent of original size [2021-04-16 06:58:14,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:58:14,497 INFO L142 QuantifierPusher]: treesize reduction 56, result has 48.6 percent of original size [2021-04-16 06:58:14,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:58:14,531 INFO L142 QuantifierPusher]: treesize reduction 59, result has 54.3 percent of original size [2021-04-16 06:58:14,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:58:14,687 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 14 [2021-04-16 06:58:14,693 INFO L142 QuantifierPusher]: treesize reduction 61, result has 53.8 percent of original size [2021-04-16 06:58:14,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-16 06:58:14,878 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 15 [2021-04-16 06:58:14,883 INFO L142 QuantifierPusher]: treesize reduction 59, result has 55.0 percent of original size [2021-04-16 06:58:14,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-04-16 06:58:15,153 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 18 [2021-04-16 06:58:15,159 INFO L142 QuantifierPusher]: treesize reduction 64, result has 57.0 percent of original size [2021-04-16 06:58:15,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-04-16 06:58:15,409 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2021-04-16 06:58:15,414 INFO L142 QuantifierPusher]: treesize reduction 89, result has 51.9 percent of original size [2021-04-16 06:58:15,417 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.7 percent of original size 88 [2021-04-16 06:58:15,715 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-04-16 06:58:15,720 INFO L142 QuantifierPusher]: treesize reduction 87, result has 56.5 percent of original size [2021-04-16 06:58:15,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-04-16 06:58:16,180 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2021-04-16 06:58:16,185 INFO L142 QuantifierPusher]: treesize reduction 87, result has 56.3 percent of original size [2021-04-16 06:58:16,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-04-16 06:58:16,568 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2021-04-16 06:58:16,572 INFO L142 QuantifierPusher]: treesize reduction 56, result has 50.4 percent of original size [2021-04-16 06:58:16,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:58:16,746 INFO L142 QuantifierPusher]: treesize reduction 58, result has 49.6 percent of original size [2021-04-16 06:58:16,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-04-16 06:58:16,910 INFO L142 QuantifierPusher]: treesize reduction 91, result has 59.0 percent of original size [2021-04-16 06:58:16,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-04-16 06:58:17,351 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2021-04-16 06:58:17,356 INFO L142 QuantifierPusher]: treesize reduction 36, result has 71.2 percent of original size [2021-04-16 06:58:17,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-04-16 06:58:17,596 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2021-04-16 06:58:17,601 INFO L142 QuantifierPusher]: treesize reduction 40, result has 72.2 percent of original size [2021-04-16 06:58:17,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-04-16 06:58:17,851 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2021-04-16 06:58:17,857 INFO L142 QuantifierPusher]: treesize reduction 51, result has 68.5 percent of original size [2021-04-16 06:58:17,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-04-16 06:58:18,211 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2021-04-16 06:58:18,216 INFO L142 QuantifierPusher]: treesize reduction 53, result has 66.9 percent of original size [2021-04-16 06:58:18,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-04-16 06:58:18,337 INFO L142 QuantifierPusher]: treesize reduction 54, result has 60.3 percent of original size [2021-04-16 06:58:18,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-04-16 06:58:18,754 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-04-16 06:58:18,759 INFO L142 QuantifierPusher]: treesize reduction 54, result has 63.5 percent of original size [2021-04-16 06:58:18,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:58:19,059 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2021-04-16 06:58:19,063 INFO L142 QuantifierPusher]: treesize reduction 56, result has 61.9 percent of original size [2021-04-16 06:58:19,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-04-16 06:58:19,313 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2021-04-16 06:58:19,317 INFO L142 QuantifierPusher]: treesize reduction 56, result has 38.5 percent of original size [2021-04-16 06:58:19,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:58:19,484 INFO L142 QuantifierPusher]: treesize reduction 55, result has 38.9 percent of original size [2021-04-16 06:58:19,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:58:19,665 INFO L142 QuantifierPusher]: treesize reduction 40, result has 62.6 percent of original size [2021-04-16 06:58:19,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 06:58:19,889 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-04-16 06:58:19,893 INFO L142 QuantifierPusher]: treesize reduction 41, result has 62.4 percent of original size [2021-04-16 06:58:19,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-04-16 06:58:20,096 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:58:20,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:58:20,226 INFO L142 QuantifierPusher]: treesize reduction 32, result has 49.2 percent of original size [2021-04-16 06:58:20,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:58:20,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-04-16 06:58:20,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:58:20,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:20,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:58:20,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:20,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:58:20,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:20,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:58:20,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:20,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:58:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:21,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:21,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-04-16 06:58:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:21,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:21,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:58:21,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757626121] [2021-04-16 06:58:21,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:58:21,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-04-16 06:58:21,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794750354] [2021-04-16 06:58:21,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-04-16 06:58:21,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:58:21,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-04-16 06:58:21,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2021-04-16 06:58:21,104 INFO L87 Difference]: Start difference. First operand 2859 states and 3526 transitions. Second operand has 36 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:58:22,913 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 15 [2021-04-16 06:58:23,604 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2021-04-16 06:58:23,957 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-04-16 06:58:24,889 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-04-16 06:58:25,302 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2021-04-16 06:58:26,223 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-04-16 06:58:27,058 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 12 [2021-04-16 06:58:27,578 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-04-16 06:58:28,881 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-04-16 06:58:29,160 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-04-16 06:58:30,423 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42