/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-1a84f73 [2021-05-01 06:39:52,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 06:39:52,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 06:39:52,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 06:39:52,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 06:39:52,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 06:39:52,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 06:39:52,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 06:39:52,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 06:39:52,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 06:39:52,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 06:39:52,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 06:39:52,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 06:39:52,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 06:39:52,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 06:39:52,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 06:39:52,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 06:39:52,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 06:39:52,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 06:39:52,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 06:39:52,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 06:39:52,716 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 06:39:52,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 06:39:52,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 06:39:52,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 06:39:52,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 06:39:52,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 06:39:52,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 06:39:52,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 06:39:52,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 06:39:52,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 06:39:52,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 06:39:52,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 06:39:52,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 06:39:52,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 06:39:52,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 06:39:52,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 06:39:52,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 06:39:52,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 06:39:52,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 06:39:52,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 06:39:52,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 06:39:52,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 06:39:52,719 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 06:39:52,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 06:39:52,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 06:39:52,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 06:39:52,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 06:39:52,990 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 06:39:52,990 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 06:39:52,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/insertion_sort-2.c [2021-05-01 06:39:53,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f99d0e25/52843cfd0a774ee482d14aaeda66eedc/FLAG289ccb193 [2021-05-01 06:39:53,395 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 06:39:53,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-2.c [2021-05-01 06:39:53,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f99d0e25/52843cfd0a774ee482d14aaeda66eedc/FLAG289ccb193 [2021-05-01 06:39:53,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f99d0e25/52843cfd0a774ee482d14aaeda66eedc [2021-05-01 06:39:53,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 06:39:53,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 06:39:53,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 06:39:53,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 06:39:53,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 06:39:53,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:39:53" (1/1) ... [2021-05-01 06:39:53,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a5f770e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53, skipping insertion in model container [2021-05-01 06:39:53,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:39:53" (1/1) ... [2021-05-01 06:39:53,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 06:39:53,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 06:39:53,928 WARN L224 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] [2021-05-01 06:39:53,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:39:53,943 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 06:39:53,951 WARN L224 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] [2021-05-01 06:39:53,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:39:53,965 INFO L208 MainTranslator]: Completed translation [2021-05-01 06:39:53,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53 WrapperNode [2021-05-01 06:39:53,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 06:39:53,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 06:39:53,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 06:39:53,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 06:39:53,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53" (1/1) ... [2021-05-01 06:39:53,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53" (1/1) ... [2021-05-01 06:39:53,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53" (1/1) ... [2021-05-01 06:39:53,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53" (1/1) ... [2021-05-01 06:39:54,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53" (1/1) ... [2021-05-01 06:39:54,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53" (1/1) ... [2021-05-01 06:39:54,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53" (1/1) ... [2021-05-01 06:39:54,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 06:39:54,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 06:39:54,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 06:39:54,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 06:39:54,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53" (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 [2021-05-01 06:39:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 06:39:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 06:39:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 06:39:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 06:39:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 06:39:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 06:39:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 06:39:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 06:39:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 06:39:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 06:39:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-01 06:39:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 06:39:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 06:39:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 06:39:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 06:39:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 06:39:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 06:39:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 06:39:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 06:39:54,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 06:39:54,403 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-05-01 06:39:54,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:39:54 BoogieIcfgContainer [2021-05-01 06:39:54,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 06:39:54,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 06:39:54,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 06:39:54,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 06:39:54,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 06:39:53" (1/3) ... [2021-05-01 06:39:54,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31816c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:39:54, skipping insertion in model container [2021-05-01 06:39:54,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:39:53" (2/3) ... [2021-05-01 06:39:54,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31816c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:39:54, skipping insertion in model container [2021-05-01 06:39:54,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:39:54" (3/3) ... [2021-05-01 06:39:54,410 INFO L111 eAbstractionObserver]: Analyzing ICFG insertion_sort-2.c [2021-05-01 06:39:54,413 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 06:39:54,421 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 06:39:54,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 06:39:54,450 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 06:39:54,450 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 06:39:54,450 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 06:39:54,450 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 06:39:54,450 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 06:39:54,450 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 06:39:54,451 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 06:39:54,451 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 06:39:54,463 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) [2021-05-01 06:39:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-01 06:39:54,472 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:54,473 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:54,473 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:54,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1914549692, now seen corresponding path program 1 times [2021-05-01 06:39:54,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:54,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431766816] [2021-05-01 06:39:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:54,530 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:54,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:54,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:54,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:54,715 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:54,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431766816] [2021-05-01 06:39:54,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1431766816] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:54,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:54,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 06:39:54,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960056071] [2021-05-01 06:39:54,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 06:39:54,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:54,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 06:39:54,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 06:39:54,731 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) [2021-05-01 06:39:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:54,805 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2021-05-01 06:39:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 06:39:54,806 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 [2021-05-01 06:39:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:54,811 INFO L225 Difference]: With dead ends: 54 [2021-05-01 06:39:54,811 INFO L226 Difference]: Without dead ends: 26 [2021-05-01 06:39:54,814 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 06:39:54,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-01 06:39:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-01 06:39:54,840 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) [2021-05-01 06:39:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-05-01 06:39:54,842 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 15 [2021-05-01 06:39:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:54,842 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-05-01 06:39:54,842 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) [2021-05-01 06:39:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-05-01 06:39:54,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-01 06:39:54,843 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:54,843 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:54,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 06:39:54,843 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash 314290466, now seen corresponding path program 1 times [2021-05-01 06:39:54,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:54,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797721571] [2021-05-01 06:39:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:54,846 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:54,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:54,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:54,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:54,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:54,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:54,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:54,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:54,936 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:54,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797721571] [2021-05-01 06:39:54,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1797721571] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:54,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:54,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 06:39:54,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384527124] [2021-05-01 06:39:54,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 06:39:54,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:54,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 06:39:54,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-01 06:39:54,938 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2021-05-01 06:39:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:55,001 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-05-01 06:39:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-01 06:39:55,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 [2021-05-01 06:39:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:55,002 INFO L225 Difference]: With dead ends: 49 [2021-05-01 06:39:55,002 INFO L226 Difference]: Without dead ends: 28 [2021-05-01 06:39:55,003 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-01 06:39:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-01 06:39:55,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-05-01 06:39:55,013 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) [2021-05-01 06:39:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-01 06:39:55,014 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2021-05-01 06:39:55,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:55,014 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-01 06:39:55,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2021-05-01 06:39:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-01 06:39:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 06:39:55,015 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:55,015 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:55,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 06:39:55,015 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:55,016 INFO L82 PathProgramCache]: Analyzing trace with hash 408725728, now seen corresponding path program 1 times [2021-05-01 06:39:55,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:55,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689147434] [2021-05-01 06:39:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:55,028 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:55,029 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:55,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,090 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 06:39:55,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:39:55,124 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.1 percent of original size [2021-05-01 06:39:55,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:39:55,173 INFO L142 QuantifierPusher]: treesize reduction 21, result has 61.8 percent of original size [2021-05-01 06:39:55,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:39:55,188 INFO L142 QuantifierPusher]: treesize reduction 22, result has 66.7 percent of original size [2021-05-01 06:39:55,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:39:55,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:55,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:55,282 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:55,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689147434] [2021-05-01 06:39:55,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1689147434] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:55,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:55,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-01 06:39:55,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045696088] [2021-05-01 06:39:55,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-01 06:39:55,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:55,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-01 06:39:55,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-01 06:39:55,287 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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) [2021-05-01 06:39:55,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:55,434 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-05-01 06:39:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 06:39:55,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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 [2021-05-01 06:39:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:55,435 INFO L225 Difference]: With dead ends: 51 [2021-05-01 06:39:55,436 INFO L226 Difference]: Without dead ends: 30 [2021-05-01 06:39:55,436 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 189.1ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:39:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-01 06:39:55,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-05-01 06:39:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2021-05-01 06:39:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-05-01 06:39:55,455 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 17 [2021-05-01 06:39:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:55,455 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-05-01 06:39:55,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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) [2021-05-01 06:39:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-05-01 06:39:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-01 06:39:55,456 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:55,457 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:39:55,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 06:39:55,457 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:55,458 INFO L82 PathProgramCache]: Analyzing trace with hash 966699294, now seen corresponding path program 2 times [2021-05-01 06:39:55,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:55,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928354731] [2021-05-01 06:39:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:55,464 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:55,468 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:55,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,529 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 06:39:55,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:39:55,544 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-05-01 06:39:55,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:39:55,565 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size [2021-05-01 06:39:55,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:39:55,583 INFO L142 QuantifierPusher]: treesize reduction 20, result has 31.0 percent of original size [2021-05-01 06:39:55,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:39:55,591 INFO L142 QuantifierPusher]: treesize reduction 12, result has 75.0 percent of original size [2021-05-01 06:39:55,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:39:55,611 INFO L142 QuantifierPusher]: treesize reduction 39, result has 2.5 percent of original size [2021-05-01 06:39:55,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:55,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:55,657 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:55,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928354731] [2021-05-01 06:39:55,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1928354731] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:55,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:55,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 06:39:55,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846851064] [2021-05-01 06:39:55,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 06:39:55,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:55,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 06:39:55,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:39:55,659 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-05-01 06:39:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:55,796 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2021-05-01 06:39:55,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-01 06:39:55,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 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 19 [2021-05-01 06:39:55,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:55,798 INFO L225 Difference]: With dead ends: 58 [2021-05-01 06:39:55,798 INFO L226 Difference]: Without dead ends: 47 [2021-05-01 06:39:55,798 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:39:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-01 06:39:55,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2021-05-01 06:39:55,804 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) [2021-05-01 06:39:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-05-01 06:39:55,805 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2021-05-01 06:39:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:55,805 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-05-01 06:39:55,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-05-01 06:39:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-05-01 06:39:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-01 06:39:55,806 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:55,806 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] [2021-05-01 06:39:55,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 06:39:55,806 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:55,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1080556849, now seen corresponding path program 1 times [2021-05-01 06:39:55,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:55,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72785337] [2021-05-01 06:39:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:55,811 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:55,812 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:55,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:55,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:55,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:55,953 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 06:39:55,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:39:55,964 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-05-01 06:39:55,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:39:55,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:55,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:55,970 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:39:55,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:55,974 INFO L142 QuantifierPusher]: treesize reduction 43, result has 47.6 percent of original size [2021-05-01 06:39:55,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:39:55,993 INFO L142 QuantifierPusher]: treesize reduction 35, result has 62.8 percent of original size [2021-05-01 06:39:55,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:39:56,027 INFO L142 QuantifierPusher]: treesize reduction 35, result has 66.3 percent of original size [2021-05-01 06:39:56,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:39:56,073 INFO L142 QuantifierPusher]: treesize reduction 35, result has 65.7 percent of original size [2021-05-01 06:39:56,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:39:56,108 INFO L142 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-05-01 06:39:56,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:39:56,125 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:39:56,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:39:56,136 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-05-01 06:39:56,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:39:56,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:39:56,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:39:56,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:56,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:56,221 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:56,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72785337] [2021-05-01 06:39:56,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [72785337] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:56,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:56,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-01 06:39:56,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200643746] [2021-05-01 06:39:56,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-01 06:39:56,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:56,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-01 06:39:56,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-05-01 06:39:56,222 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) [2021-05-01 06:39:56,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:56,668 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2021-05-01 06:39:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-01 06:39:56,669 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 [2021-05-01 06:39:56,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:56,670 INFO L225 Difference]: With dead ends: 67 [2021-05-01 06:39:56,670 INFO L226 Difference]: Without dead ends: 65 [2021-05-01 06:39:56,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 428.3ms TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:39:56,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-01 06:39:56,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 44. [2021-05-01 06:39:56,678 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) [2021-05-01 06:39:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2021-05-01 06:39:56,678 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 25 [2021-05-01 06:39:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:56,678 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2021-05-01 06:39:56,679 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) [2021-05-01 06:39:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2021-05-01 06:39:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-01 06:39:56,679 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:56,679 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] [2021-05-01 06:39:56,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-01 06:39:56,679 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:56,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:56,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1781621427, now seen corresponding path program 1 times [2021-05-01 06:39:56,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:56,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659827507] [2021-05-01 06:39:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:56,684 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:56,685 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:56,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:56,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:39:56,703 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-05-01 06:39:56,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:39:56,708 INFO L142 QuantifierPusher]: treesize reduction 6, result has 45.5 percent of original size [2021-05-01 06:39:56,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:39:56,713 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 06:39:56,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:56,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:56,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:56,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:56,734 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:56,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659827507] [2021-05-01 06:39:56,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1659827507] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:56,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:56,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 06:39:56,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006586243] [2021-05-01 06:39:56,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 06:39:56,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:56,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 06:39:56,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-01 06:39:56,735 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) [2021-05-01 06:39:56,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:56,792 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2021-05-01 06:39:56,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-01 06:39:56,793 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 [2021-05-01 06:39:56,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:56,794 INFO L225 Difference]: With dead ends: 88 [2021-05-01 06:39:56,794 INFO L226 Difference]: Without dead ends: 57 [2021-05-01 06:39:56,795 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-01 06:39:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-01 06:39:56,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2021-05-01 06:39:56,801 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) [2021-05-01 06:39:56,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2021-05-01 06:39:56,801 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 25 [2021-05-01 06:39:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:56,802 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2021-05-01 06:39:56,802 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) [2021-05-01 06:39:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2021-05-01 06:39:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-01 06:39:56,802 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:56,802 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] [2021-05-01 06:39:56,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-01 06:39:56,803 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:56,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1755898038, now seen corresponding path program 1 times [2021-05-01 06:39:56,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:56,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921622761] [2021-05-01 06:39:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:56,807 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:56,808 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:56,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:56,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:56,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:39:56,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:56,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:56,865 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:39:56,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:56,870 INFO L142 QuantifierPusher]: treesize reduction 14, result has 51.7 percent of original size [2021-05-01 06:39:56,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:39:56,878 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-05-01 06:39:56,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:39:56,892 INFO L142 QuantifierPusher]: treesize reduction 16, result has 69.2 percent of original size [2021-05-01 06:39:56,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:39:56,910 INFO L142 QuantifierPusher]: treesize reduction 40, result has 48.1 percent of original size [2021-05-01 06:39:56,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:39:56,930 INFO L142 QuantifierPusher]: treesize reduction 30, result has 67.4 percent of original size [2021-05-01 06:39:56,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:39:56,963 INFO L142 QuantifierPusher]: treesize reduction 30, result has 67.0 percent of original size [2021-05-01 06:39:56,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:39:57,008 INFO L142 QuantifierPusher]: treesize reduction 18, result has 51.4 percent of original size [2021-05-01 06:39:57,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:39:57,025 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:39:57,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:39:57,026 INFO L142 QuantifierPusher]: treesize reduction 41, result has 48.1 percent of original size [2021-05-01 06:39:57,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:39:57,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:39:57,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:39:57,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:39:57,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:57,113 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:57,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921622761] [2021-05-01 06:39:57,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1921622761] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:57,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:57,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 06:39:57,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771167884] [2021-05-01 06:39:57,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 06:39:57,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:57,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 06:39:57,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:39:57,115 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) [2021-05-01 06:39:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:57,701 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2021-05-01 06:39:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-01 06:39:57,702 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 [2021-05-01 06:39:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:57,702 INFO L225 Difference]: With dead ends: 123 [2021-05-01 06:39:57,703 INFO L226 Difference]: Without dead ends: 92 [2021-05-01 06:39:57,703 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 481.1ms TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2021-05-01 06:39:57,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-01 06:39:57,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 49. [2021-05-01 06:39:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 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) [2021-05-01 06:39:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-05-01 06:39:57,712 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 28 [2021-05-01 06:39:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:57,712 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-05-01 06:39:57,713 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) [2021-05-01 06:39:57,713 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-05-01 06:39:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-01 06:39:57,713 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:57,713 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] [2021-05-01 06:39:57,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 06:39:57,713 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:57,714 INFO L82 PathProgramCache]: Analyzing trace with hash -990333180, now seen corresponding path program 2 times [2021-05-01 06:39:57,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:57,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833869271] [2021-05-01 06:39:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:57,718 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:57,719 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:57,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:57,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:57,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:39:57,763 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.0 percent of original size [2021-05-01 06:39:57,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:39:57,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:39:57,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:57,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:57,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:57,805 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:57,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833869271] [2021-05-01 06:39:57,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [833869271] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:57,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:57,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 06:39:57,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804496903] [2021-05-01 06:39:57,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 06:39:57,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:57,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 06:39:57,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:39:57,809 INFO L87 Difference]: Start difference. First operand 49 states and 57 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) [2021-05-01 06:39:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:57,931 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2021-05-01 06:39:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-01 06:39:57,932 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 [2021-05-01 06:39:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:57,934 INFO L225 Difference]: With dead ends: 125 [2021-05-01 06:39:57,934 INFO L226 Difference]: Without dead ends: 91 [2021-05-01 06:39:57,935 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 61.9ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:39:57,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-01 06:39:57,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 62. [2021-05-01 06:39:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 55 states have internal predecessors, (65), 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) [2021-05-01 06:39:57,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-05-01 06:39:57,958 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 31 [2021-05-01 06:39:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:57,958 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-05-01 06:39:57,958 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) [2021-05-01 06:39:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-05-01 06:39:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 06:39:57,961 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:57,961 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] [2021-05-01 06:39:57,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-01 06:39:57,962 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash -405243253, now seen corresponding path program 1 times [2021-05-01 06:39:57,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:57,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004784709] [2021-05-01 06:39:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:57,966 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:57,967 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:58,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:58,012 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-05-01 06:39:58,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:39:58,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:39:58,030 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-05-01 06:39:58,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:39:58,037 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.2 percent of original size [2021-05-01 06:39:58,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:39:58,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-05-01 06:39:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:58,085 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:58,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004784709] [2021-05-01 06:39:58,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2004784709] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:58,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:58,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 06:39:58,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216430882] [2021-05-01 06:39:58,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 06:39:58,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 06:39:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:39:58,087 INFO L87 Difference]: Start difference. First operand 62 states and 72 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) [2021-05-01 06:39:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:58,213 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2021-05-01 06:39:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-01 06:39:58,213 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 [2021-05-01 06:39:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:58,214 INFO L225 Difference]: With dead ends: 100 [2021-05-01 06:39:58,214 INFO L226 Difference]: Without dead ends: 73 [2021-05-01 06:39:58,215 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-05-01 06:39:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-01 06:39:58,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58. [2021-05-01 06:39:58,227 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) [2021-05-01 06:39:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-05-01 06:39:58,229 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 33 [2021-05-01 06:39:58,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:58,229 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-05-01 06:39:58,229 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) [2021-05-01 06:39:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-05-01 06:39:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 06:39:58,229 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:58,229 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] [2021-05-01 06:39:58,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-01 06:39:58,229 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:58,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1306424002, now seen corresponding path program 3 times [2021-05-01 06:39:58,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:58,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533771879] [2021-05-01 06:39:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:58,234 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:58,235 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:58,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:39:58,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:58,304 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:39:58,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:58,308 INFO L142 QuantifierPusher]: treesize reduction 54, result has 29.9 percent of original size [2021-05-01 06:39:58,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:39:58,319 INFO L142 QuantifierPusher]: treesize reduction 64, result has 34.0 percent of original size [2021-05-01 06:39:58,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:39:58,341 INFO L142 QuantifierPusher]: treesize reduction 64, result has 39.6 percent of original size [2021-05-01 06:39:58,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:39:58,366 INFO L142 QuantifierPusher]: treesize reduction 64, result has 38.5 percent of original size [2021-05-01 06:39:58,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:39:58,388 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.0 percent of original size [2021-05-01 06:39:58,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:39:58,407 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:39:58,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:39:58,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:39:58,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:39:58,435 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:39:58,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:39:58,446 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-05-01 06:39:58,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:39:58,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:58,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:39:58,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:39:58,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:58,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:58,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:58,518 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:58,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533771879] [2021-05-01 06:39:58,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [533771879] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:58,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:58,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 06:39:58,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150702180] [2021-05-01 06:39:58,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-01 06:39:58,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:58,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-01 06:39:58,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-05-01 06:39:58,519 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 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) [2021-05-01 06:39:58,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:39:58,963 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2021-05-01 06:39:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-01 06:39:58,963 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 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 [2021-05-01 06:39:58,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:39:58,965 INFO L225 Difference]: With dead ends: 83 [2021-05-01 06:39:58,965 INFO L226 Difference]: Without dead ends: 81 [2021-05-01 06:39:58,967 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 375.7ms TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-05-01 06:39:58,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-01 06:39:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 68. [2021-05-01 06:39:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 61 states have internal predecessors, (74), 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) [2021-05-01 06:39:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2021-05-01 06:39:58,978 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 33 [2021-05-01 06:39:58,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:39:58,978 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2021-05-01 06:39:58,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 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) [2021-05-01 06:39:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2021-05-01 06:39:58,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-01 06:39:58,982 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:39:58,982 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] [2021-05-01 06:39:58,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-01 06:39:58,983 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:39:58,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:39:58,983 INFO L82 PathProgramCache]: Analyzing trace with hash -350564349, now seen corresponding path program 1 times [2021-05-01 06:39:58,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:39:58,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339998884] [2021-05-01 06:39:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:39:58,987 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:39:58,988 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:39:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:59,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:59,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:59,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:59,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:59,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:59,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:39:59,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:59,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:59,077 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:39:59,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:59,079 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:39:59,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:59,098 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:39:59,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:39:59,106 INFO L142 QuantifierPusher]: treesize reduction 30, result has 47.4 percent of original size [2021-05-01 06:39:59,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:39:59,126 INFO L142 QuantifierPusher]: treesize reduction 22, result has 66.7 percent of original size [2021-05-01 06:39:59,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:39:59,142 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.1 percent of original size [2021-05-01 06:39:59,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:39:59,164 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-05-01 06:39:59,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:39:59,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:39:59,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:39:59,193 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:39:59,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:39:59,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:59,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:39:59,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:59,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:39:59,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:59,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:39:59,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:59,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:59,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:39:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:39:59,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:39:59,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:39:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:39:59,262 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:39:59,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339998884] [2021-05-01 06:39:59,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1339998884] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:39:59,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:39:59,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 06:39:59,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000258969] [2021-05-01 06:39:59,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 06:39:59,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:39:59,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 06:39:59,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:39:59,263 INFO L87 Difference]: Start difference. First operand 68 states and 81 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) [2021-05-01 06:40:00,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:00,071 INFO L93 Difference]: Finished difference Result 158 states and 199 transitions. [2021-05-01 06:40:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-01 06:40:00,072 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 [2021-05-01 06:40:00,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:00,074 INFO L225 Difference]: With dead ends: 158 [2021-05-01 06:40:00,074 INFO L226 Difference]: Without dead ends: 156 [2021-05-01 06:40:00,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 661.9ms TimeCoverageRelationStatistics Valid=445, Invalid=1717, Unknown=0, NotChecked=0, Total=2162 [2021-05-01 06:40:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-05-01 06:40:00,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 77. [2021-05-01 06:40:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 69 states have (on average 1.289855072463768) internal successors, (89), 70 states have internal predecessors, (89), 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) [2021-05-01 06:40:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 96 transitions. [2021-05-01 06:40:00,092 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 96 transitions. Word has length 36 [2021-05-01 06:40:00,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:00,092 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 96 transitions. [2021-05-01 06:40:00,093 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) [2021-05-01 06:40:00,093 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 96 transitions. [2021-05-01 06:40:00,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-01 06:40:00,093 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:00,093 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] [2021-05-01 06:40:00,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-01 06:40:00,094 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:00,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:00,095 INFO L82 PathProgramCache]: Analyzing trace with hash 350500229, now seen corresponding path program 2 times [2021-05-01 06:40:00,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:00,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472904555] [2021-05-01 06:40:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:00,099 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:00,101 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:00,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:00,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:00,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:00,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:00,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:00,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:00,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:00,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:00,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:00,168 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:00,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472904555] [2021-05-01 06:40:00,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [472904555] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:00,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:00,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-01 06:40:00,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441716484] [2021-05-01 06:40:00,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-01 06:40:00,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:00,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-01 06:40:00,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-01 06:40:00,169 INFO L87 Difference]: Start difference. First operand 77 states and 96 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) [2021-05-01 06:40:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:00,312 INFO L93 Difference]: Finished difference Result 151 states and 193 transitions. [2021-05-01 06:40:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-01 06:40:00,312 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 [2021-05-01 06:40:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:00,314 INFO L225 Difference]: With dead ends: 151 [2021-05-01 06:40:00,314 INFO L226 Difference]: Without dead ends: 110 [2021-05-01 06:40:00,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 58.3ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-05-01 06:40:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-01 06:40:00,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 83. [2021-05-01 06:40:00,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 76 states have internal predecessors, (92), 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) [2021-05-01 06:40:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2021-05-01 06:40:00,330 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 36 [2021-05-01 06:40:00,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:00,330 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2021-05-01 06:40:00,330 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) [2021-05-01 06:40:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2021-05-01 06:40:00,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-01 06:40:00,331 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:00,331 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] [2021-05-01 06:40:00,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-01 06:40:00,331 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:00,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:00,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1169352267, now seen corresponding path program 3 times [2021-05-01 06:40:00,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:00,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619296455] [2021-05-01 06:40:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:00,336 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:00,338 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:00,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:00,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:00,383 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-05-01 06:40:00,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:00,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:00,391 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:40:00,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:00,394 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-05-01 06:40:00,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:00,401 INFO L142 QuantifierPusher]: treesize reduction 18, result has 51.4 percent of original size [2021-05-01 06:40:00,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:00,415 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.8 percent of original size [2021-05-01 06:40:00,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:00,444 INFO L142 QuantifierPusher]: treesize reduction 44, result has 47.6 percent of original size [2021-05-01 06:40:00,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:00,466 INFO L142 QuantifierPusher]: treesize reduction 58, result has 45.3 percent of original size [2021-05-01 06:40:00,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:00,507 INFO L142 QuantifierPusher]: treesize reduction 58, result has 43.7 percent of original size [2021-05-01 06:40:00,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:00,540 INFO L142 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-05-01 06:40:00,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:00,572 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.0 percent of original size [2021-05-01 06:40:00,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:00,592 INFO L142 QuantifierPusher]: treesize reduction 14, result has 70.8 percent of original size [2021-05-01 06:40:00,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:00,607 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:00,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:00,622 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-05-01 06:40:00,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:00,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:00,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:00,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:00,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:00,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:00,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:00,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:00,729 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:00,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619296455] [2021-05-01 06:40:00,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1619296455] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:00,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:00,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 06:40:00,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645790170] [2021-05-01 06:40:00,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-01 06:40:00,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:00,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-01 06:40:00,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-05-01 06:40:00,730 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 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) [2021-05-01 06:40:01,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:01,220 INFO L93 Difference]: Finished difference Result 109 states and 129 transitions. [2021-05-01 06:40:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-01 06:40:01,221 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 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 [2021-05-01 06:40:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:01,221 INFO L225 Difference]: With dead ends: 109 [2021-05-01 06:40:01,221 INFO L226 Difference]: Without dead ends: 107 [2021-05-01 06:40:01,222 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 479.3ms TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2021-05-01 06:40:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-01 06:40:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2021-05-01 06:40:01,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 76 states have internal predecessors, (92), 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) [2021-05-01 06:40:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2021-05-01 06:40:01,233 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 36 [2021-05-01 06:40:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:01,233 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2021-05-01 06:40:01,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 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) [2021-05-01 06:40:01,234 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2021-05-01 06:40:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-01 06:40:01,234 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:01,234 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] [2021-05-01 06:40:01,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-01 06:40:01,234 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:01,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:01,235 INFO L82 PathProgramCache]: Analyzing trace with hash -930331484, now seen corresponding path program 4 times [2021-05-01 06:40:01,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:01,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799842438] [2021-05-01 06:40:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:01,239 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:01,240 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:01,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:01,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:01,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:01,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:01,283 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-05-01 06:40:01,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:01,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:01,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:01,292 INFO L142 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-05-01 06:40:01,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:01,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-05-01 06:40:01,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:01,303 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-05-01 06:40:01,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:01,309 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-05-01 06:40:01,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:40:01,318 INFO L142 QuantifierPusher]: treesize reduction 15, result has 50.0 percent of original size [2021-05-01 06:40:01,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:40:01,330 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 06:40:01,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:40:01,349 INFO L142 QuantifierPusher]: treesize reduction 39, result has 48.7 percent of original size [2021-05-01 06:40:01,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:40:01,368 INFO L142 QuantifierPusher]: treesize reduction 29, result has 68.1 percent of original size [2021-05-01 06:40:01,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:40:01,398 INFO L142 QuantifierPusher]: treesize reduction 29, result has 67.8 percent of original size [2021-05-01 06:40:01,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:40:01,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:01,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:01,440 INFO L142 QuantifierPusher]: treesize reduction 41, result has 48.1 percent of original size [2021-05-01 06:40:01,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:01,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:01,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:01,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:01,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:01,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:01,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:01,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:01,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:01,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:01,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:01,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:01,529 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:01,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799842438] [2021-05-01 06:40:01,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [799842438] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:01,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:01,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-01 06:40:01,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998038531] [2021-05-01 06:40:01,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 06:40:01,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:01,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 06:40:01,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-05-01 06:40:01,530 INFO L87 Difference]: Start difference. First operand 83 states and 99 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) [2021-05-01 06:40:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:02,546 INFO L93 Difference]: Finished difference Result 188 states and 229 transitions. [2021-05-01 06:40:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-01 06:40:02,547 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 [2021-05-01 06:40:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:02,549 INFO L225 Difference]: With dead ends: 188 [2021-05-01 06:40:02,549 INFO L226 Difference]: Without dead ends: 146 [2021-05-01 06:40:02,550 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 741.6ms TimeCoverageRelationStatistics Valid=297, Invalid=1343, Unknown=0, NotChecked=0, Total=1640 [2021-05-01 06:40:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-01 06:40:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 80. [2021-05-01 06:40:02,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 73 states have internal predecessors, (87), 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) [2021-05-01 06:40:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2021-05-01 06:40:02,564 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 39 [2021-05-01 06:40:02,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:02,564 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2021-05-01 06:40:02,564 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) [2021-05-01 06:40:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2021-05-01 06:40:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-01 06:40:02,565 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:02,565 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] [2021-05-01 06:40:02,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-01 06:40:02,565 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:02,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:02,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1624035100, now seen corresponding path program 2 times [2021-05-01 06:40:02,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:02,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534202068] [2021-05-01 06:40:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:02,570 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:02,571 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:02,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:02,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:02,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:02,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:02,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:02,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:02,634 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-05-01 06:40:02,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:02,639 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-05-01 06:40:02,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:02,646 INFO L142 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-05-01 06:40:02,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:02,656 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-05-01 06:40:02,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:02,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:40:02,672 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-05-01 06:40:02,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:02,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:40:02,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:02,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:02,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:02,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:02,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:02,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:02,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-01 06:40:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:02,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:02,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:02,747 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:02,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534202068] [2021-05-01 06:40:02,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [534202068] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:02,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:02,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-01 06:40:02,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250555658] [2021-05-01 06:40:02,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 06:40:02,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:02,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 06:40:02,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-05-01 06:40:02,748 INFO L87 Difference]: Start difference. First operand 80 states and 94 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) [2021-05-01 06:40:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:03,217 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2021-05-01 06:40:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-01 06:40:03,217 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 [2021-05-01 06:40:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:03,218 INFO L225 Difference]: With dead ends: 121 [2021-05-01 06:40:03,218 INFO L226 Difference]: Without dead ends: 119 [2021-05-01 06:40:03,218 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 319.5ms TimeCoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2021-05-01 06:40:03,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-01 06:40:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 97. [2021-05-01 06:40:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 86 states have (on average 1.197674418604651) internal successors, (103), 88 states have internal predecessors, (103), 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) [2021-05-01 06:40:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 114 transitions. [2021-05-01 06:40:03,233 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 114 transitions. Word has length 41 [2021-05-01 06:40:03,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:03,233 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 114 transitions. [2021-05-01 06:40:03,233 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) [2021-05-01 06:40:03,234 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 114 transitions. [2021-05-01 06:40:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-01 06:40:03,234 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:03,235 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, 1] [2021-05-01 06:40:03,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-01 06:40:03,235 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:03,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:03,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1436661232, now seen corresponding path program 2 times [2021-05-01 06:40:03,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:03,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168393181] [2021-05-01 06:40:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:03,239 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:03,239 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:03,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:03,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:03,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:03,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:03,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:03,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:40:03,290 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.0 percent of original size [2021-05-01 06:40:03,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:03,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:03,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:03,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:03,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:03,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:03,357 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:03,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168393181] [2021-05-01 06:40:03,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [168393181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:03,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:03,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-01 06:40:03,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232843222] [2021-05-01 06:40:03,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 06:40:03,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:03,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 06:40:03,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-05-01 06:40:03,358 INFO L87 Difference]: Start difference. First operand 97 states and 114 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 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) [2021-05-01 06:40:03,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:03,586 INFO L93 Difference]: Finished difference Result 218 states and 264 transitions. [2021-05-01 06:40:03,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-01 06:40:03,587 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 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 42 [2021-05-01 06:40:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:03,588 INFO L225 Difference]: With dead ends: 218 [2021-05-01 06:40:03,588 INFO L226 Difference]: Without dead ends: 173 [2021-05-01 06:40:03,588 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 101.1ms TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-05-01 06:40:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-01 06:40:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 125. [2021-05-01 06:40:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 116 states have internal predecessors, (135), 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) [2021-05-01 06:40:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2021-05-01 06:40:03,608 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 42 [2021-05-01 06:40:03,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:03,608 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2021-05-01 06:40:03,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 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) [2021-05-01 06:40:03,608 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2021-05-01 06:40:03,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-01 06:40:03,609 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:03,609 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] [2021-05-01 06:40:03,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-01 06:40:03,609 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:03,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:03,609 INFO L82 PathProgramCache]: Analyzing trace with hash -2084807843, now seen corresponding path program 1 times [2021-05-01 06:40:03,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:03,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771916958] [2021-05-01 06:40:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:03,613 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:03,613 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:03,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:03,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:03,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:03,650 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:40:03,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:40:03,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:40:03,659 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-05-01 06:40:03,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:03,662 INFO L142 QuantifierPusher]: treesize reduction 28, result has 15.2 percent of original size [2021-05-01 06:40:03,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:03,665 INFO L142 QuantifierPusher]: treesize reduction 28, result has 15.2 percent of original size [2021-05-01 06:40:03,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:03,669 INFO L142 QuantifierPusher]: treesize reduction 28, result has 44.0 percent of original size [2021-05-01 06:40:03,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:40:03,678 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-05-01 06:40:03,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:03,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:03,694 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size [2021-05-01 06:40:03,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:03,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:40:03,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:03,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:03,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:03,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:03,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:03,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-01 06:40:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:03,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:03,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:03,786 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:03,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771916958] [2021-05-01 06:40:03,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1771916958] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:03,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:03,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-01 06:40:03,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687596042] [2021-05-01 06:40:03,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 06:40:03,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:03,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 06:40:03,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-05-01 06:40:03,787 INFO L87 Difference]: Start difference. First operand 125 states and 146 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) [2021-05-01 06:40:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:04,250 INFO L93 Difference]: Finished difference Result 164 states and 191 transitions. [2021-05-01 06:40:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-01 06:40:04,251 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 [2021-05-01 06:40:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:04,252 INFO L225 Difference]: With dead ends: 164 [2021-05-01 06:40:04,252 INFO L226 Difference]: Without dead ends: 162 [2021-05-01 06:40:04,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 287.5ms TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:40:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-01 06:40:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2021-05-01 06:40:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 115 states have (on average 1.191304347826087) internal successors, (137), 117 states have internal predecessors, (137), 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) [2021-05-01 06:40:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2021-05-01 06:40:04,272 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 44 [2021-05-01 06:40:04,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:04,272 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2021-05-01 06:40:04,272 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) [2021-05-01 06:40:04,272 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2021-05-01 06:40:04,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-01 06:40:04,272 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:04,272 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] [2021-05-01 06:40:04,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-01 06:40:04,273 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:04,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:04,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1979815022, now seen corresponding path program 3 times [2021-05-01 06:40:04,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:04,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128727199] [2021-05-01 06:40:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:04,276 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:04,277 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:04,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:04,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:04,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:04,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:04,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:04,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:04,333 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:40:04,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:40:04,343 INFO L142 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-05-01 06:40:04,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:04,347 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-05-01 06:40:04,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:04,350 INFO L142 QuantifierPusher]: treesize reduction 39, result has 44.3 percent of original size [2021-05-01 06:40:04,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:04,367 INFO L142 QuantifierPusher]: treesize reduction 40, result has 55.6 percent of original size [2021-05-01 06:40:04,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:40:04,403 INFO L142 QuantifierPusher]: treesize reduction 40, result has 60.0 percent of original size [2021-05-01 06:40:04,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:40:04,427 INFO L142 QuantifierPusher]: treesize reduction 40, result has 58.8 percent of original size [2021-05-01 06:40:04,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:40:04,449 INFO L142 QuantifierPusher]: treesize reduction 20, result has 58.3 percent of original size [2021-05-01 06:40:04,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:40:04,471 INFO L142 QuantifierPusher]: treesize reduction 28, result has 52.5 percent of original size [2021-05-01 06:40:04,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:04,491 INFO L142 QuantifierPusher]: treesize reduction 21, result has 76.9 percent of original size [2021-05-01 06:40:04,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:40:04,524 INFO L142 QuantifierPusher]: treesize reduction 23, result has 63.5 percent of original size [2021-05-01 06:40:04,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:04,537 INFO L142 QuantifierPusher]: treesize reduction 24, result has 62.5 percent of original size [2021-05-01 06:40:04,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:04,564 INFO L142 QuantifierPusher]: treesize reduction 45, result has 66.2 percent of original size [2021-05-01 06:40:04,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:40:04,602 INFO L142 QuantifierPusher]: treesize reduction 31, result has 63.5 percent of original size [2021-05-01 06:40:04,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:40:04,631 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-05-01 06:40:04,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:04,646 INFO L142 QuantifierPusher]: treesize reduction 22, result has 62.1 percent of original size [2021-05-01 06:40:04,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:04,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:04,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:04,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:04,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:04,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:04,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:04,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:04,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:04,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:04,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:04,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:04,733 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:04,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128727199] [2021-05-01 06:40:04,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1128727199] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:04,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:04,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-01 06:40:04,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096495505] [2021-05-01 06:40:04,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-01 06:40:04,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:04,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-01 06:40:04,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-05-01 06:40:04,735 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 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) [2021-05-01 06:40:05,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:05,720 INFO L93 Difference]: Finished difference Result 212 states and 251 transitions. [2021-05-01 06:40:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-01 06:40:05,720 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 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 [2021-05-01 06:40:05,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:05,721 INFO L225 Difference]: With dead ends: 212 [2021-05-01 06:40:05,721 INFO L226 Difference]: Without dead ends: 210 [2021-05-01 06:40:05,722 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 730.1ms TimeCoverageRelationStatistics Valid=189, Invalid=1143, Unknown=0, NotChecked=0, Total=1332 [2021-05-01 06:40:05,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-01 06:40:05,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 136. [2021-05-01 06:40:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 125 states have (on average 1.2) internal successors, (150), 127 states have internal predecessors, (150), 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) [2021-05-01 06:40:05,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2021-05-01 06:40:05,744 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 44 [2021-05-01 06:40:05,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:05,744 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2021-05-01 06:40:05,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 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) [2021-05-01 06:40:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2021-05-01 06:40:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-01 06:40:05,744 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:05,744 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] [2021-05-01 06:40:05,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-01 06:40:05,744 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:05,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:05,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1128449496, now seen corresponding path program 4 times [2021-05-01 06:40:05,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:05,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146654742] [2021-05-01 06:40:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:05,748 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:05,749 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:05,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:05,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:05,796 INFO L142 QuantifierPusher]: treesize reduction 18, result has 59.1 percent of original size [2021-05-01 06:40:05,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:05,805 INFO L142 QuantifierPusher]: treesize reduction 12, result has 68.4 percent of original size [2021-05-01 06:40:05,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:05,817 INFO L142 QuantifierPusher]: treesize reduction 54, result has 32.5 percent of original size [2021-05-01 06:40:05,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:05,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:05,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:05,840 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:40:05,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:05,843 INFO L142 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-05-01 06:40:05,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:05,850 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.5 percent of original size [2021-05-01 06:40:05,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:05,871 INFO L142 QuantifierPusher]: treesize reduction 55, result has 40.9 percent of original size [2021-05-01 06:40:05,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:05,891 INFO L142 QuantifierPusher]: treesize reduction 47, result has 53.9 percent of original size [2021-05-01 06:40:05,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:40:05,913 INFO L142 QuantifierPusher]: treesize reduction 47, result has 58.0 percent of original size [2021-05-01 06:40:05,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:40:05,939 INFO L142 QuantifierPusher]: treesize reduction 47, result has 57.3 percent of original size [2021-05-01 06:40:05,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:40:05,962 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-05-01 06:40:05,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:05,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-05-01 06:40:05,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:05,991 INFO L142 QuantifierPusher]: treesize reduction 28, result has 72.3 percent of original size [2021-05-01 06:40:05,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:40:06,026 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:40:06,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:06,041 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:40:06,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:06,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:06,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:06,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:06,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:06,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:06,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:06,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:06,140 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:06,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146654742] [2021-05-01 06:40:06,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [146654742] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:06,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:06,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-01 06:40:06,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441573273] [2021-05-01 06:40:06,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-01 06:40:06,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:06,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-01 06:40:06,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-05-01 06:40:06,141 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 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) [2021-05-01 06:40:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:07,593 INFO L93 Difference]: Finished difference Result 265 states and 319 transitions. [2021-05-01 06:40:07,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-01 06:40:07,593 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 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 [2021-05-01 06:40:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:07,600 INFO L225 Difference]: With dead ends: 265 [2021-05-01 06:40:07,600 INFO L226 Difference]: Without dead ends: 226 [2021-05-01 06:40:07,601 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1066.5ms TimeCoverageRelationStatistics Valid=278, Invalid=1614, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 06:40:07,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-05-01 06:40:07,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 158. [2021-05-01 06:40:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 147 states have (on average 1.2244897959183674) internal successors, (180), 149 states have internal predecessors, (180), 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) [2021-05-01 06:40:07,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 191 transitions. [2021-05-01 06:40:07,629 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 191 transitions. Word has length 44 [2021-05-01 06:40:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:07,630 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 191 transitions. [2021-05-01 06:40:07,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 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) [2021-05-01 06:40:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 191 transitions. [2021-05-01 06:40:07,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-01 06:40:07,630 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:07,630 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] [2021-05-01 06:40:07,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-01 06:40:07,630 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:07,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:07,631 INFO L82 PathProgramCache]: Analyzing trace with hash -172816864, now seen corresponding path program 5 times [2021-05-01 06:40:07,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:07,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815962665] [2021-05-01 06:40:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:07,634 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:07,635 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:07,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:07,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:07,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:07,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:07,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:07,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:07,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:07,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:07,698 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:40:07,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:07,701 INFO L142 QuantifierPusher]: treesize reduction 27, result has 62.5 percent of original size [2021-05-01 06:40:07,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:07,715 INFO L142 QuantifierPusher]: treesize reduction 28, result has 69.6 percent of original size [2021-05-01 06:40:07,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:40:07,733 INFO L142 QuantifierPusher]: treesize reduction 28, result has 73.3 percent of original size [2021-05-01 06:40:07,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:40:07,761 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.8 percent of original size [2021-05-01 06:40:07,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:07,968 INFO L142 QuantifierPusher]: treesize reduction 17, result has 76.4 percent of original size [2021-05-01 06:40:07,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:40:07,985 INFO L142 QuantifierPusher]: treesize reduction 17, result has 75.7 percent of original size [2021-05-01 06:40:07,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:07,992 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.3 percent of original size [2021-05-01 06:40:07,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:40:08,011 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.3 percent of original size [2021-05-01 06:40:08,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:40:08,027 INFO L142 QuantifierPusher]: treesize reduction 14, result has 80.6 percent of original size [2021-05-01 06:40:08,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:40:08,050 INFO L142 QuantifierPusher]: treesize reduction 14, result has 81.1 percent of original size [2021-05-01 06:40:08,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:40:08,063 INFO L142 QuantifierPusher]: treesize reduction 14, result has 80.3 percent of original size [2021-05-01 06:40:08,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:40:08,075 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:40:08,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:08,094 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:40:08,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:08,112 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:40:08,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:08,126 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:08,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:08,140 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-05-01 06:40:08,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:08,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:08,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:08,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:08,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:08,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:08,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:08,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:08,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:08,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:08,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:08,233 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:08,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815962665] [2021-05-01 06:40:08,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1815962665] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:08,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:08,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 06:40:08,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331142635] [2021-05-01 06:40:08,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 06:40:08,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:08,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 06:40:08,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:40:08,235 INFO L87 Difference]: Start difference. First operand 158 states and 191 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 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) [2021-05-01 06:40:09,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:09,007 INFO L93 Difference]: Finished difference Result 214 states and 256 transitions. [2021-05-01 06:40:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-01 06:40:09,007 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 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 [2021-05-01 06:40:09,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:09,008 INFO L225 Difference]: With dead ends: 214 [2021-05-01 06:40:09,008 INFO L226 Difference]: Without dead ends: 212 [2021-05-01 06:40:09,016 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 786.3ms TimeCoverageRelationStatistics Valid=189, Invalid=1001, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 06:40:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-05-01 06:40:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 183. [2021-05-01 06:40:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 170 states have (on average 1.2176470588235293) internal successors, (207), 173 states have internal predecessors, (207), 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) [2021-05-01 06:40:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 220 transitions. [2021-05-01 06:40:09,058 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 220 transitions. Word has length 44 [2021-05-01 06:40:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:09,058 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 220 transitions. [2021-05-01 06:40:09,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 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) [2021-05-01 06:40:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 220 transitions. [2021-05-01 06:40:09,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-01 06:40:09,064 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:09,064 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] [2021-05-01 06:40:09,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-01 06:40:09,064 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:09,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:09,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1585209602, now seen corresponding path program 1 times [2021-05-01 06:40:09,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:09,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787680697] [2021-05-01 06:40:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:09,080 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:09,091 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:09,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:09,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:09,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:09,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:09,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:09,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:09,265 INFO L142 QuantifierPusher]: treesize reduction 27, result has 56.5 percent of original size [2021-05-01 06:40:09,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:09,275 INFO L142 QuantifierPusher]: treesize reduction 19, result has 64.8 percent of original size [2021-05-01 06:40:09,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:09,276 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-05-01 06:40:09,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:09,301 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-05-01 06:40:09,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:09,303 INFO L142 QuantifierPusher]: treesize reduction 40, result has 7.0 percent of original size [2021-05-01 06:40:09,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:09,307 INFO L142 QuantifierPusher]: treesize reduction 41, result has 14.6 percent of original size [2021-05-01 06:40:09,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:09,310 INFO L142 QuantifierPusher]: treesize reduction 61, result has 50.4 percent of original size [2021-05-01 06:40:09,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:40:09,326 INFO L142 QuantifierPusher]: treesize reduction 61, result has 54.8 percent of original size [2021-05-01 06:40:09,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:40:09,374 INFO L142 QuantifierPusher]: treesize reduction 61, result has 57.9 percent of original size [2021-05-01 06:40:09,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:40:09,422 INFO L142 QuantifierPusher]: treesize reduction 60, result has 57.7 percent of original size [2021-05-01 06:40:09,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:40:09,476 INFO L142 QuantifierPusher]: treesize reduction 28, result has 60.6 percent of original size [2021-05-01 06:40:09,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:40:09,511 INFO L142 QuantifierPusher]: treesize reduction 29, result has 65.9 percent of original size [2021-05-01 06:40:09,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:40:09,553 INFO L142 QuantifierPusher]: treesize reduction 27, result has 76.1 percent of original size [2021-05-01 06:40:09,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:40:09,589 INFO L142 QuantifierPusher]: treesize reduction 53, result has 58.3 percent of original size [2021-05-01 06:40:09,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:40:09,636 INFO L142 QuantifierPusher]: treesize reduction 51, result has 64.8 percent of original size [2021-05-01 06:40:09,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 06:40:09,677 INFO L142 QuantifierPusher]: treesize reduction 53, result has 62.9 percent of original size [2021-05-01 06:40:09,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 06:40:09,724 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-05-01 06:40:09,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:40:09,760 INFO L142 QuantifierPusher]: treesize reduction 8, result has 82.2 percent of original size [2021-05-01 06:40:09,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:40:09,784 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:40:09,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:09,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:09,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:09,830 INFO L142 QuantifierPusher]: treesize reduction 12, result has 64.7 percent of original size [2021-05-01 06:40:09,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:40:09,855 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:40:09,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:09,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:09,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:09,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:09,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:09,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:09,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:09,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:09,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:09,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:09,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:09,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:09,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-05-01 06:40:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:09,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:09,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:09,967 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:09,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787680697] [2021-05-01 06:40:09,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [787680697] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:09,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:09,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:40:09,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126967480] [2021-05-01 06:40:09,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:40:09,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:09,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:40:09,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:40:09,969 INFO L87 Difference]: Start difference. First operand 183 states and 220 transitions. Second operand has 26 states, 25 states have (on average 1.64) internal successors, (41), 24 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) [2021-05-01 06:40:11,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:11,999 INFO L93 Difference]: Finished difference Result 314 states and 377 transitions. [2021-05-01 06:40:11,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-01 06:40:12,000 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.64) internal successors, (41), 24 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 [2021-05-01 06:40:12,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:12,001 INFO L225 Difference]: With dead ends: 314 [2021-05-01 06:40:12,001 INFO L226 Difference]: Without dead ends: 312 [2021-05-01 06:40:12,002 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 1691.5ms TimeCoverageRelationStatistics Valid=514, Invalid=3392, Unknown=0, NotChecked=0, Total=3906 [2021-05-01 06:40:12,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-05-01 06:40:12,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 233. [2021-05-01 06:40:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 215 states have (on average 1.2093023255813953) internal successors, (260), 221 states have internal predecessors, (260), 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) [2021-05-01 06:40:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 281 transitions. [2021-05-01 06:40:12,047 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 281 transitions. Word has length 47 [2021-05-01 06:40:12,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:12,047 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 281 transitions. [2021-05-01 06:40:12,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 1.64) internal successors, (41), 24 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) [2021-05-01 06:40:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 281 transitions. [2021-05-01 06:40:12,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-01 06:40:12,048 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:12,048 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] [2021-05-01 06:40:12,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-01 06:40:12,048 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:12,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:12,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1571697014, now seen corresponding path program 3 times [2021-05-01 06:40:12,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:12,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971752393] [2021-05-01 06:40:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:12,052 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:12,053 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:12,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:12,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:12,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:12,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:12,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:12,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:40:12,097 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-05-01 06:40:12,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:40:12,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:12,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:12,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:12,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:12,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:12,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-01 06:40:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:12,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-01 06:40:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:12,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:12,154 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:12,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971752393] [2021-05-01 06:40:12,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1971752393] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:12,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:12,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-01 06:40:12,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241640540] [2021-05-01 06:40:12,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 06:40:12,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:12,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 06:40:12,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-05-01 06:40:12,155 INFO L87 Difference]: Start difference. First operand 233 states and 281 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) [2021-05-01 06:40:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:12,412 INFO L93 Difference]: Finished difference Result 283 states and 339 transitions. [2021-05-01 06:40:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-01 06:40:12,413 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 [2021-05-01 06:40:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:12,415 INFO L225 Difference]: With dead ends: 283 [2021-05-01 06:40:12,415 INFO L226 Difference]: Without dead ends: 228 [2021-05-01 06:40:12,416 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:40:12,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-05-01 06:40:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 210. [2021-05-01 06:40:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 194 states have (on average 1.190721649484536) internal successors, (231), 199 states have internal predecessors, (231), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-01 06:40:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 249 transitions. [2021-05-01 06:40:12,459 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 249 transitions. Word has length 49 [2021-05-01 06:40:12,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:12,459 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 249 transitions. [2021-05-01 06:40:12,459 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) [2021-05-01 06:40:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 249 transitions. [2021-05-01 06:40:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-01 06:40:12,460 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:12,460 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] [2021-05-01 06:40:12,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-01 06:40:12,460 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:12,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:12,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1212783309, now seen corresponding path program 5 times [2021-05-01 06:40:12,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:12,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434624701] [2021-05-01 06:40:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:12,464 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:12,464 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:12,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:12,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:12,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:12,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:12,531 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:40:12,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:12,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:12,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:12,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:12,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:12,558 INFO L142 QuantifierPusher]: treesize reduction 30, result has 46.4 percent of original size [2021-05-01 06:40:12,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:12,571 INFO L142 QuantifierPusher]: treesize reduction 22, result has 66.7 percent of original size [2021-05-01 06:40:12,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:40:12,585 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.1 percent of original size [2021-05-01 06:40:12,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:40:12,605 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-05-01 06:40:12,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:40:12,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:40:12,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:12,632 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:40:12,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:12,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:12,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:12,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:12,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:12,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:12,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:12,725 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:12,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434624701] [2021-05-01 06:40:12,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [434624701] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:12,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:12,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-01 06:40:12,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730257496] [2021-05-01 06:40:12,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 06:40:12,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:12,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 06:40:12,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-05-01 06:40:12,726 INFO L87 Difference]: Start difference. First operand 210 states and 249 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) [2021-05-01 06:40:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:13,997 INFO L93 Difference]: Finished difference Result 322 states and 389 transitions. [2021-05-01 06:40:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-01 06:40:13,997 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 [2021-05-01 06:40:13,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:14,000 INFO L225 Difference]: With dead ends: 322 [2021-05-01 06:40:14,002 INFO L226 Difference]: Without dead ends: 320 [2021-05-01 06:40:14,003 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 880.1ms TimeCoverageRelationStatistics Valid=658, Invalid=2422, Unknown=0, NotChecked=0, Total=3080 [2021-05-01 06:40:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-05-01 06:40:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 230. [2021-05-01 06:40:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 212 states have (on average 1.1981132075471699) internal successors, (254), 218 states have internal predecessors, (254), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-01 06:40:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 274 transitions. [2021-05-01 06:40:14,095 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 274 transitions. Word has length 47 [2021-05-01 06:40:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:14,095 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 274 transitions. [2021-05-01 06:40:14,095 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) [2021-05-01 06:40:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 274 transitions. [2021-05-01 06:40:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-01 06:40:14,095 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:14,095 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] [2021-05-01 06:40:14,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-01 06:40:14,095 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:14,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:14,096 INFO L82 PathProgramCache]: Analyzing trace with hash -511718731, now seen corresponding path program 6 times [2021-05-01 06:40:14,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:14,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600116795] [2021-05-01 06:40:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:14,107 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:14,108 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:14,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:14,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:14,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:14,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:14,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:14,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:14,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:14,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:14,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:14,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:14,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:14,205 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:14,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600116795] [2021-05-01 06:40:14,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [600116795] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:14,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:14,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 06:40:14,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094160727] [2021-05-01 06:40:14,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-01 06:40:14,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:14,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-01 06:40:14,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:40:14,206 INFO L87 Difference]: Start difference. First operand 230 states and 274 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) [2021-05-01 06:40:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:14,569 INFO L93 Difference]: Finished difference Result 379 states and 463 transitions. [2021-05-01 06:40:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 06:40:14,569 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 [2021-05-01 06:40:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:14,570 INFO L225 Difference]: With dead ends: 379 [2021-05-01 06:40:14,570 INFO L226 Difference]: Without dead ends: 287 [2021-05-01 06:40:14,572 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-05-01 06:40:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-05-01 06:40:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 238. [2021-05-01 06:40:14,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 220 states have (on average 1.2) internal successors, (264), 226 states have internal predecessors, (264), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-01 06:40:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 284 transitions. [2021-05-01 06:40:14,648 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 284 transitions. Word has length 47 [2021-05-01 06:40:14,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:14,648 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 284 transitions. [2021-05-01 06:40:14,648 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) [2021-05-01 06:40:14,649 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 284 transitions. [2021-05-01 06:40:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-01 06:40:14,652 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:14,652 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] [2021-05-01 06:40:14,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-01 06:40:14,652 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:14,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:14,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1895537965, now seen corresponding path program 6 times [2021-05-01 06:40:14,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:14,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976068636] [2021-05-01 06:40:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:14,657 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:14,659 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:14,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:14,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:14,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:14,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:14,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:14,813 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:40:14,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:14,816 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-05-01 06:40:14,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:40:14,826 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.0 percent of original size [2021-05-01 06:40:14,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:14,844 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.1 percent of original size [2021-05-01 06:40:14,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:40:14,868 INFO L142 QuantifierPusher]: treesize reduction 30, result has 70.9 percent of original size [2021-05-01 06:40:14,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:40:14,902 INFO L142 QuantifierPusher]: treesize reduction 30, result has 73.9 percent of original size [2021-05-01 06:40:14,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-05-01 06:40:14,954 INFO L142 QuantifierPusher]: treesize reduction 30, result has 73.2 percent of original size [2021-05-01 06:40:14,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:40:14,992 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.8 percent of original size [2021-05-01 06:40:14,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:15,014 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.8 percent of original size [2021-05-01 06:40:15,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:15,036 INFO L142 QuantifierPusher]: treesize reduction 35, result has 74.3 percent of original size [2021-05-01 06:40:15,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 06:40:15,075 INFO L142 QuantifierPusher]: treesize reduction 23, result has 70.5 percent of original size [2021-05-01 06:40:15,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:40:15,111 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-05-01 06:40:15,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:15,126 INFO L142 QuantifierPusher]: treesize reduction 22, result has 62.1 percent of original size [2021-05-01 06:40:15,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:15,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:15,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:15,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:15,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:15,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:15,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:15,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:15,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:15,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:15,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:15,225 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:15,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976068636] [2021-05-01 06:40:15,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [976068636] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:15,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:15,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 06:40:15,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060577113] [2021-05-01 06:40:15,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 06:40:15,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:15,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 06:40:15,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:40:15,226 INFO L87 Difference]: Start difference. First operand 238 states and 284 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 19 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) [2021-05-01 06:40:16,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:16,157 INFO L93 Difference]: Finished difference Result 283 states and 336 transitions. [2021-05-01 06:40:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-01 06:40:16,158 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 19 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 [2021-05-01 06:40:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:16,159 INFO L225 Difference]: With dead ends: 283 [2021-05-01 06:40:16,159 INFO L226 Difference]: Without dead ends: 281 [2021-05-01 06:40:16,159 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 707.6ms TimeCoverageRelationStatistics Valid=171, Invalid=1019, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 06:40:16,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-05-01 06:40:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 241. [2021-05-01 06:40:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 223 states have (on average 1.201793721973094) internal successors, (268), 229 states have internal predecessors, (268), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-01 06:40:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 288 transitions. [2021-05-01 06:40:16,205 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 288 transitions. Word has length 47 [2021-05-01 06:40:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:16,205 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 288 transitions. [2021-05-01 06:40:16,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 19 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) [2021-05-01 06:40:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 288 transitions. [2021-05-01 06:40:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-01 06:40:16,205 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:16,205 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] [2021-05-01 06:40:16,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-01 06:40:16,206 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:16,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:16,206 INFO L82 PathProgramCache]: Analyzing trace with hash -879512715, now seen corresponding path program 7 times [2021-05-01 06:40:16,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:16,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483951031] [2021-05-01 06:40:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:16,212 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:16,213 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:16,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:16,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:16,252 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-05-01 06:40:16,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:16,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:16,260 INFO L142 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-05-01 06:40:16,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:16,262 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-05-01 06:40:16,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:16,268 INFO L142 QuantifierPusher]: treesize reduction 10, result has 61.5 percent of original size [2021-05-01 06:40:16,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:40:16,277 INFO L142 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-05-01 06:40:16,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:16,288 INFO L142 QuantifierPusher]: treesize reduction 15, result has 57.1 percent of original size [2021-05-01 06:40:16,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:40:16,304 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.8 percent of original size [2021-05-01 06:40:16,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:16,327 INFO L142 QuantifierPusher]: treesize reduction 39, result has 50.6 percent of original size [2021-05-01 06:40:16,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:16,351 INFO L142 QuantifierPusher]: treesize reduction 18, result has 82.0 percent of original size [2021-05-01 06:40:16,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:40:16,392 INFO L142 QuantifierPusher]: treesize reduction 20, result has 79.8 percent of original size [2021-05-01 06:40:16,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:40:16,427 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.7 percent of original size [2021-05-01 06:40:16,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:16,449 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.7 percent of original size [2021-05-01 06:40:16,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:16,472 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-05-01 06:40:16,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:16,492 INFO L142 QuantifierPusher]: treesize reduction 8, result has 82.6 percent of original size [2021-05-01 06:40:16,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:16,512 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:40:16,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:16,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:16,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:16,548 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-05-01 06:40:16,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:16,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:16,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:16,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:16,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:16,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:16,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:16,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:16,639 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:16,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483951031] [2021-05-01 06:40:16,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1483951031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:16,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:16,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 06:40:16,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944985456] [2021-05-01 06:40:16,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 06:40:16,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:16,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 06:40:16,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2021-05-01 06:40:16,641 INFO L87 Difference]: Start difference. First operand 241 states and 288 transitions. Second operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 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) [2021-05-01 06:40:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:18,179 INFO L93 Difference]: Finished difference Result 409 states and 492 transitions. [2021-05-01 06:40:18,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-01 06:40:18,180 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), 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 [2021-05-01 06:40:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:18,181 INFO L225 Difference]: With dead ends: 409 [2021-05-01 06:40:18,181 INFO L226 Difference]: Without dead ends: 311 [2021-05-01 06:40:18,182 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1240.0ms TimeCoverageRelationStatistics Valid=482, Invalid=2598, Unknown=0, NotChecked=0, Total=3080 [2021-05-01 06:40:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-05-01 06:40:18,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 238. [2021-05-01 06:40:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 221 states have (on average 1.2036199095022624) internal successors, (266), 226 states have internal predecessors, (266), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-01 06:40:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 284 transitions. [2021-05-01 06:40:18,232 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 284 transitions. Word has length 47 [2021-05-01 06:40:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:18,232 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 284 transitions. [2021-05-01 06:40:18,232 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), 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) [2021-05-01 06:40:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 284 transitions. [2021-05-01 06:40:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-01 06:40:18,233 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:18,233 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] [2021-05-01 06:40:18,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-01 06:40:18,233 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:18,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:18,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2050746395, now seen corresponding path program 8 times [2021-05-01 06:40:18,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:18,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452820337] [2021-05-01 06:40:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:18,237 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:18,238 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:18,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:18,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:18,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:18,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:18,296 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-05-01 06:40:18,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:18,299 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 06:40:18,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:18,314 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-05-01 06:40:18,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:18,319 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-05-01 06:40:18,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:18,343 INFO L142 QuantifierPusher]: treesize reduction 39, result has 50.6 percent of original size [2021-05-01 06:40:18,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:18,362 INFO L142 QuantifierPusher]: treesize reduction 53, result has 47.5 percent of original size [2021-05-01 06:40:18,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:18,395 INFO L142 QuantifierPusher]: treesize reduction 53, result has 45.9 percent of original size [2021-05-01 06:40:18,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:18,424 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-05-01 06:40:18,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:18,442 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.0 percent of original size [2021-05-01 06:40:18,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:18,463 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.6 percent of original size [2021-05-01 06:40:18,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:40:18,486 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:40:18,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:18,487 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:40:18,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:18,511 INFO L142 QuantifierPusher]: treesize reduction 15, result has 83.7 percent of original size [2021-05-01 06:40:18,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:40:18,536 INFO L142 QuantifierPusher]: treesize reduction 13, result has 72.3 percent of original size [2021-05-01 06:40:18,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:18,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:18,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:18,576 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-05-01 06:40:18,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:18,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:18,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:18,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:18,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:18,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:18,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:18,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:18,659 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:18,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452820337] [2021-05-01 06:40:18,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [452820337] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:18,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:18,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-01 06:40:18,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604101638] [2021-05-01 06:40:18,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-01 06:40:18,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:18,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-01 06:40:18,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-05-01 06:40:18,660 INFO L87 Difference]: Start difference. First operand 238 states and 284 transitions. Second operand has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 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) [2021-05-01 06:40:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:19,340 INFO L93 Difference]: Finished difference Result 288 states and 342 transitions. [2021-05-01 06:40:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-01 06:40:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 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 [2021-05-01 06:40:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:19,341 INFO L225 Difference]: With dead ends: 288 [2021-05-01 06:40:19,341 INFO L226 Difference]: Without dead ends: 286 [2021-05-01 06:40:19,342 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 529.2ms TimeCoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 06:40:19,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-05-01 06:40:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 238. [2021-05-01 06:40:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 221 states have (on average 1.2036199095022624) internal successors, (266), 226 states have internal predecessors, (266), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-01 06:40:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 284 transitions. [2021-05-01 06:40:19,386 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 284 transitions. Word has length 47 [2021-05-01 06:40:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:19,386 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 284 transitions. [2021-05-01 06:40:19,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 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) [2021-05-01 06:40:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 284 transitions. [2021-05-01 06:40:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-01 06:40:19,387 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:19,387 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] [2021-05-01 06:40:19,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-01 06:40:19,387 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:19,387 INFO L82 PathProgramCache]: Analyzing trace with hash -42029369, now seen corresponding path program 2 times [2021-05-01 06:40:19,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:19,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007582900] [2021-05-01 06:40:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:19,391 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:19,391 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:19,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:19,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:19,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:19,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:19,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:19,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:19,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:19,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:19,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:19,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:19,456 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:40:19,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:19,460 INFO L142 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size [2021-05-01 06:40:19,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:40:19,475 INFO L142 QuantifierPusher]: treesize reduction 27, result has 68.6 percent of original size [2021-05-01 06:40:19,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:40:19,503 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.7 percent of original size [2021-05-01 06:40:19,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:40:19,546 INFO L142 QuantifierPusher]: treesize reduction 21, result has 78.1 percent of original size [2021-05-01 06:40:19,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:40:19,575 INFO L142 QuantifierPusher]: treesize reduction 21, result has 77.7 percent of original size [2021-05-01 06:40:19,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:40:19,588 INFO L142 QuantifierPusher]: treesize reduction 21, result has 77.2 percent of original size [2021-05-01 06:40:19,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:40:19,600 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.7 percent of original size [2021-05-01 06:40:19,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:19,624 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.0 percent of original size [2021-05-01 06:40:19,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:40:19,647 INFO L142 QuantifierPusher]: treesize reduction 44, result has 60.7 percent of original size [2021-05-01 06:40:19,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:40:19,672 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.1 percent of original size [2021-05-01 06:40:19,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:40:19,696 INFO L142 QuantifierPusher]: treesize reduction 22, result has 73.2 percent of original size [2021-05-01 06:40:19,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:40:19,727 INFO L142 QuantifierPusher]: treesize reduction 22, result has 72.2 percent of original size [2021-05-01 06:40:19,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:40:19,756 INFO L142 QuantifierPusher]: treesize reduction 37, result has 63.4 percent of original size [2021-05-01 06:40:19,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:40:19,787 INFO L142 QuantifierPusher]: treesize reduction 27, result has 76.3 percent of original size [2021-05-01 06:40:19,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:40:19,825 INFO L142 QuantifierPusher]: treesize reduction 27, result has 75.9 percent of original size [2021-05-01 06:40:19,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-05-01 06:40:19,874 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 06:40:19,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:19,892 INFO L142 QuantifierPusher]: treesize reduction 12, result has 66.7 percent of original size [2021-05-01 06:40:19,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:19,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-05-01 06:40:19,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:19,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:19,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:19,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:19,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:19,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:19,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:19,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:19,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:20,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:20,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:20,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:20,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-01 06:40:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:20,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:20,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:20,016 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:20,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007582900] [2021-05-01 06:40:20,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2007582900] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:20,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:20,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:40:20,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486697980] [2021-05-01 06:40:20,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:40:20,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:20,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:40:20,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:40:20,017 INFO L87 Difference]: Start difference. First operand 238 states and 284 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) [2021-05-01 06:40:21,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:21,402 INFO L93 Difference]: Finished difference Result 248 states and 293 transitions. [2021-05-01 06:40:21,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-01 06:40:21,403 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 [2021-05-01 06:40:21,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:21,404 INFO L225 Difference]: With dead ends: 248 [2021-05-01 06:40:21,404 INFO L226 Difference]: Without dead ends: 208 [2021-05-01 06:40:21,404 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1316.1ms TimeCoverageRelationStatistics Valid=370, Invalid=2282, Unknown=0, NotChecked=0, Total=2652 [2021-05-01 06:40:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-05-01 06:40:21,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2021-05-01 06:40:21,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 190 states have (on average 1.2263157894736842) internal successors, (233), 194 states have internal predecessors, (233), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:40:21,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 248 transitions. [2021-05-01 06:40:21,441 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 248 transitions. Word has length 50 [2021-05-01 06:40:21,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:21,441 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 248 transitions. [2021-05-01 06:40:21,441 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) [2021-05-01 06:40:21,441 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 248 transitions. [2021-05-01 06:40:21,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-01 06:40:21,441 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:21,441 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] [2021-05-01 06:40:21,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-01 06:40:21,442 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:21,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:21,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1165803103, now seen corresponding path program 7 times [2021-05-01 06:40:21,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:21,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718399030] [2021-05-01 06:40:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:21,446 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:21,446 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:21,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:21,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:21,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:21,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:21,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:21,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:21,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:40:21,500 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.0 percent of original size [2021-05-01 06:40:21,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:21,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:21,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:21,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:21,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:21,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:21,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:21,589 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:21,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718399030] [2021-05-01 06:40:21,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [718399030] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:21,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:21,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-01 06:40:21,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405702676] [2021-05-01 06:40:21,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 06:40:21,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:21,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 06:40:21,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-05-01 06:40:21,590 INFO L87 Difference]: Start difference. First operand 204 states and 248 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) [2021-05-01 06:40:21,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:21,989 INFO L93 Difference]: Finished difference Result 489 states and 603 transitions. [2021-05-01 06:40:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-01 06:40:21,990 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 [2021-05-01 06:40:21,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:21,992 INFO L225 Difference]: With dead ends: 489 [2021-05-01 06:40:21,992 INFO L226 Difference]: Without dead ends: 376 [2021-05-01 06:40:21,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 183.2ms TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-05-01 06:40:21,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-05-01 06:40:22,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 289. [2021-05-01 06:40:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 275 states have (on average 1.2072727272727273) internal successors, (332), 279 states have internal predecessors, (332), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:40:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 347 transitions. [2021-05-01 06:40:22,053 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 347 transitions. Word has length 50 [2021-05-01 06:40:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:22,053 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 347 transitions. [2021-05-01 06:40:22,053 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) [2021-05-01 06:40:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 347 transitions. [2021-05-01 06:40:22,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-01 06:40:22,054 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:22,054 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] [2021-05-01 06:40:22,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-01 06:40:22,054 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:22,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:22,054 INFO L82 PathProgramCache]: Analyzing trace with hash 904028532, now seen corresponding path program 9 times [2021-05-01 06:40:22,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:22,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562260489] [2021-05-01 06:40:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:22,058 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:22,059 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:22,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:22,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:22,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:22,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:22,130 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:40:22,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:22,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:22,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:22,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:22,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:22,157 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-05-01 06:40:22,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:40:22,167 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-05-01 06:40:22,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:40:22,180 INFO L142 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-05-01 06:40:22,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:40:22,199 INFO L142 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-05-01 06:40:22,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:40:22,219 INFO L142 QuantifierPusher]: treesize reduction 19, result has 76.5 percent of original size [2021-05-01 06:40:22,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:40:22,260 INFO L142 QuantifierPusher]: treesize reduction 19, result has 76.3 percent of original size [2021-05-01 06:40:22,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:40:22,294 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:22,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:22,308 INFO L142 QuantifierPusher]: treesize reduction 41, result has 48.1 percent of original size [2021-05-01 06:40:22,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:22,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:22,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:22,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:22,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:22,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:22,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:22,400 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:22,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562260489] [2021-05-01 06:40:22,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1562260489] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:22,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:22,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 06:40:22,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014283132] [2021-05-01 06:40:22,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 06:40:22,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:22,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 06:40:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:40:22,401 INFO L87 Difference]: Start difference. First operand 289 states and 347 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) [2021-05-01 06:40:23,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:23,459 INFO L93 Difference]: Finished difference Result 500 states and 608 transitions. [2021-05-01 06:40:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-01 06:40:23,460 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 [2021-05-01 06:40:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:23,462 INFO L225 Difference]: With dead ends: 500 [2021-05-01 06:40:23,463 INFO L226 Difference]: Without dead ends: 392 [2021-05-01 06:40:23,464 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 809.0ms TimeCoverageRelationStatistics Valid=489, Invalid=2061, Unknown=0, NotChecked=0, Total=2550 [2021-05-01 06:40:23,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-05-01 06:40:23,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 290. [2021-05-01 06:40:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 276 states have (on average 1.1992753623188406) internal successors, (331), 280 states have internal predecessors, (331), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:40:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 346 transitions. [2021-05-01 06:40:23,521 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 346 transitions. Word has length 50 [2021-05-01 06:40:23,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:23,521 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 346 transitions. [2021-05-01 06:40:23,521 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) [2021-05-01 06:40:23,521 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 346 transitions. [2021-05-01 06:40:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-01 06:40:23,522 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:23,522 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] [2021-05-01 06:40:23,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-01 06:40:23,522 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:23,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:23,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1297158544, now seen corresponding path program 10 times [2021-05-01 06:40:23,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:23,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088175472] [2021-05-01 06:40:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:23,526 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:23,527 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:23,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:23,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:23,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:23,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:23,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:23,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:23,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:23,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:23,608 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:40:23,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:23,611 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-05-01 06:40:23,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:23,619 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:40:23,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:23,631 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-05-01 06:40:23,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:23,644 INFO L142 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-05-01 06:40:23,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:23,651 INFO L142 QuantifierPusher]: treesize reduction 14, result has 76.3 percent of original size [2021-05-01 06:40:23,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:23,675 INFO L142 QuantifierPusher]: treesize reduction 39, result has 59.8 percent of original size [2021-05-01 06:40:23,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:40:23,721 INFO L142 QuantifierPusher]: treesize reduction 29, result has 75.0 percent of original size [2021-05-01 06:40:23,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:40:23,765 INFO L142 QuantifierPusher]: treesize reduction 29, result has 74.3 percent of original size [2021-05-01 06:40:23,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:40:23,802 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:40:23,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:23,824 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:40:23,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:23,845 INFO L142 QuantifierPusher]: treesize reduction 15, result has 83.7 percent of original size [2021-05-01 06:40:23,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:40:23,890 INFO L142 QuantifierPusher]: treesize reduction 13, result has 72.3 percent of original size [2021-05-01 06:40:23,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:23,910 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:23,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:23,926 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-05-01 06:40:23,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:23,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:23,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:23,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:23,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:23,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:23,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:23,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:23,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:24,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:24,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:24,011 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:24,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088175472] [2021-05-01 06:40:24,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2088175472] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:24,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:24,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-01 06:40:24,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927285430] [2021-05-01 06:40:24,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-01 06:40:24,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:24,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-01 06:40:24,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-05-01 06:40:24,012 INFO L87 Difference]: Start difference. First operand 290 states and 346 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 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) [2021-05-01 06:40:24,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:24,824 INFO L93 Difference]: Finished difference Result 356 states and 424 transitions. [2021-05-01 06:40:24,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-01 06:40:24,824 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 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 [2021-05-01 06:40:24,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:24,827 INFO L225 Difference]: With dead ends: 356 [2021-05-01 06:40:24,827 INFO L226 Difference]: Without dead ends: 354 [2021-05-01 06:40:24,828 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 676.4ms TimeCoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2021-05-01 06:40:24,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-05-01 06:40:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 281. [2021-05-01 06:40:24,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 267 states have (on average 1.198501872659176) internal successors, (320), 271 states have internal predecessors, (320), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 06:40:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 335 transitions. [2021-05-01 06:40:24,886 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 335 transitions. Word has length 50 [2021-05-01 06:40:24,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:24,886 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 335 transitions. [2021-05-01 06:40:24,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 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) [2021-05-01 06:40:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 335 transitions. [2021-05-01 06:40:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-01 06:40:24,887 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:24,887 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] [2021-05-01 06:40:24,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-01 06:40:24,887 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:24,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:24,887 INFO L82 PathProgramCache]: Analyzing trace with hash -787548180, now seen corresponding path program 2 times [2021-05-01 06:40:24,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:24,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460044520] [2021-05-01 06:40:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:24,892 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:24,893 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:24,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:24,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:24,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:24,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:24,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:24,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:24,941 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-05-01 06:40:24,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:24,944 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-05-01 06:40:24,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:24,948 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-05-01 06:40:24,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:24,953 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-05-01 06:40:24,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:24,960 INFO L142 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-05-01 06:40:24,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:24,972 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-05-01 06:40:24,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:24,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:24,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:40:24,992 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-05-01 06:40:24,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:25,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:40:25,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:25,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:25,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:25,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:25,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:25,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:25,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-01 06:40:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:25,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:25,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:25,093 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:25,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460044520] [2021-05-01 06:40:25,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [460044520] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:25,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:25,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 06:40:25,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384321196] [2021-05-01 06:40:25,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 06:40:25,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:25,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 06:40:25,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:40:25,095 INFO L87 Difference]: Start difference. First operand 281 states and 335 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 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) [2021-05-01 06:40:26,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:26,094 INFO L93 Difference]: Finished difference Result 394 states and 470 transitions. [2021-05-01 06:40:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-01 06:40:26,095 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 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 [2021-05-01 06:40:26,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:26,097 INFO L225 Difference]: With dead ends: 394 [2021-05-01 06:40:26,097 INFO L226 Difference]: Without dead ends: 392 [2021-05-01 06:40:26,098 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 563.1ms TimeCoverageRelationStatistics Valid=221, Invalid=1671, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 06:40:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-05-01 06:40:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 313. [2021-05-01 06:40:26,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 295 states have (on average 1.193220338983051) internal successors, (352), 301 states have internal predecessors, (352), 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) [2021-05-01 06:40:26,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 373 transitions. [2021-05-01 06:40:26,172 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 373 transitions. Word has length 52 [2021-05-01 06:40:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:26,172 INFO L480 AbstractCegarLoop]: Abstraction has 313 states and 373 transitions. [2021-05-01 06:40:26,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 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) [2021-05-01 06:40:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 373 transitions. [2021-05-01 06:40:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-01 06:40:26,173 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:26,174 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] [2021-05-01 06:40:26,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-01 06:40:26,174 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:26,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1609585614, now seen corresponding path program 3 times [2021-05-01 06:40:26,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:26,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076593118] [2021-05-01 06:40:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:26,178 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:26,179 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:26,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:26,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:26,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:26,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:26,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:26,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:26,243 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:40:26,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:40:26,254 INFO L142 QuantifierPusher]: treesize reduction 30, result has 62.5 percent of original size [2021-05-01 06:40:26,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:40:26,275 INFO L142 QuantifierPusher]: treesize reduction 24, result has 11.1 percent of original size [2021-05-01 06:40:26,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:26,280 INFO L142 QuantifierPusher]: treesize reduction 25, result has 21.9 percent of original size [2021-05-01 06:40:26,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:26,283 INFO L142 QuantifierPusher]: treesize reduction 37, result has 30.2 percent of original size [2021-05-01 06:40:26,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:40:26,297 INFO L142 QuantifierPusher]: treesize reduction 28, result has 57.6 percent of original size [2021-05-01 06:40:26,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:26,321 INFO L142 QuantifierPusher]: treesize reduction 28, result has 65.9 percent of original size [2021-05-01 06:40:26,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:40:26,359 INFO L142 QuantifierPusher]: treesize reduction 20, result has 73.7 percent of original size [2021-05-01 06:40:26,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:40:26,404 INFO L142 QuantifierPusher]: treesize reduction 20, result has 72.6 percent of original size [2021-05-01 06:40:26,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:26,435 INFO L142 QuantifierPusher]: treesize reduction 20, result has 71.0 percent of original size [2021-05-01 06:40:26,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:40:26,471 INFO L142 QuantifierPusher]: treesize reduction 20, result has 63.0 percent of original size [2021-05-01 06:40:26,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:40:26,491 INFO L142 QuantifierPusher]: treesize reduction 21, result has 62.5 percent of original size [2021-05-01 06:40:26,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:26,514 INFO L142 QuantifierPusher]: treesize reduction 31, result has 69.0 percent of original size [2021-05-01 06:40:26,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:40:26,542 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 06:40:26,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:26,572 INFO L142 QuantifierPusher]: treesize reduction 24, result has 56.4 percent of original size [2021-05-01 06:40:26,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:26,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-05-01 06:40:26,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:26,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:26,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:26,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:26,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:26,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:26,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:26,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:26,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:26,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:26,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:26,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:26,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-01 06:40:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:26,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:26,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:26,691 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:26,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076593118] [2021-05-01 06:40:26,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2076593118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:26,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:26,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-01 06:40:26,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053701759] [2021-05-01 06:40:26,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-01 06:40:26,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:26,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-01 06:40:26,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-05-01 06:40:26,692 INFO L87 Difference]: Start difference. First operand 313 states and 373 transitions. Second operand has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 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) [2021-05-01 06:40:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:27,910 INFO L93 Difference]: Finished difference Result 401 states and 476 transitions. [2021-05-01 06:40:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-01 06:40:27,911 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 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 [2021-05-01 06:40:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:27,912 INFO L225 Difference]: With dead ends: 401 [2021-05-01 06:40:27,912 INFO L226 Difference]: Without dead ends: 399 [2021-05-01 06:40:27,913 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 933.2ms TimeCoverageRelationStatistics Valid=258, Invalid=1634, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 06:40:27,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-05-01 06:40:27,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 307. [2021-05-01 06:40:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 289 states have (on average 1.193771626297578) internal successors, (345), 295 states have internal predecessors, (345), 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) [2021-05-01 06:40:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 366 transitions. [2021-05-01 06:40:27,981 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 366 transitions. Word has length 52 [2021-05-01 06:40:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:27,981 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 366 transitions. [2021-05-01 06:40:27,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 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) [2021-05-01 06:40:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 366 transitions. [2021-05-01 06:40:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-01 06:40:27,981 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:27,982 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] [2021-05-01 06:40:27,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-01 06:40:27,982 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:27,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:27,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1574158879, now seen corresponding path program 8 times [2021-05-01 06:40:27,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:27,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894089851] [2021-05-01 06:40:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:27,987 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:27,988 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:28,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:28,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:28,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:28,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:28,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:28,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:28,062 INFO L142 QuantifierPusher]: treesize reduction 28, result has 59.4 percent of original size [2021-05-01 06:40:28,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:28,075 INFO L142 QuantifierPusher]: treesize reduction 28, result has 54.1 percent of original size [2021-05-01 06:40:28,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:28,079 INFO L142 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size [2021-05-01 06:40:28,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:28,093 INFO L142 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size [2021-05-01 06:40:28,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:28,094 INFO L142 QuantifierPusher]: treesize reduction 24, result has 63.1 percent of original size [2021-05-01 06:40:28,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:28,109 INFO L142 QuantifierPusher]: treesize reduction 24, result has 57.9 percent of original size [2021-05-01 06:40:28,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:28,115 INFO L142 QuantifierPusher]: treesize reduction 52, result has 38.8 percent of original size [2021-05-01 06:40:28,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:28,129 INFO L142 QuantifierPusher]: treesize reduction 44, result has 42.9 percent of original size [2021-05-01 06:40:28,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:28,130 INFO L142 QuantifierPusher]: treesize reduction 35, result has 34.0 percent of original size [2021-05-01 06:40:28,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:28,139 INFO L142 QuantifierPusher]: treesize reduction 60, result has 30.2 percent of original size [2021-05-01 06:40:28,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:28,143 INFO L142 QuantifierPusher]: treesize reduction 88, result has 37.6 percent of original size [2021-05-01 06:40:28,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:28,160 INFO L142 QuantifierPusher]: treesize reduction 81, result has 46.7 percent of original size [2021-05-01 06:40:28,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:40:28,183 INFO L142 QuantifierPusher]: treesize reduction 81, result has 50.3 percent of original size [2021-05-01 06:40:28,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:40:28,213 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-05-01 06:40:28,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:40:28,239 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.6 percent of original size [2021-05-01 06:40:28,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:28,263 INFO L142 QuantifierPusher]: treesize reduction 22, result has 73.8 percent of original size [2021-05-01 06:40:28,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:40:28,292 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.0 percent of original size [2021-05-01 06:40:28,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:40:28,329 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.7 percent of original size [2021-05-01 06:40:28,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:28,341 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.7 percent of original size [2021-05-01 06:40:28,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:28,369 INFO L142 QuantifierPusher]: treesize reduction 52, result has 64.6 percent of original size [2021-05-01 06:40:28,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 06:40:28,437 INFO L142 QuantifierPusher]: treesize reduction 34, result has 48.5 percent of original size [2021-05-01 06:40:28,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:28,449 INFO L142 QuantifierPusher]: treesize reduction 34, result has 47.7 percent of original size [2021-05-01 06:40:28,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:28,473 INFO L142 QuantifierPusher]: treesize reduction 31, result has 64.0 percent of original size [2021-05-01 06:40:28,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:40:28,495 INFO L142 QuantifierPusher]: treesize reduction 43, result has 62.9 percent of original size [2021-05-01 06:40:28,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:40:28,534 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-05-01 06:40:28,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:28,550 INFO L142 QuantifierPusher]: treesize reduction 56, result has 39.1 percent of original size [2021-05-01 06:40:28,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:28,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:28,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:28,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:28,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:28,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:28,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:28,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:28,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:28,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:28,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:28,653 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:28,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894089851] [2021-05-01 06:40:28,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1894089851] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:28,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:28,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:40:28,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712854585] [2021-05-01 06:40:28,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:40:28,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:28,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:40:28,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:40:28,654 INFO L87 Difference]: Start difference. First operand 307 states and 366 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) [2021-05-01 06:40:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:30,101 INFO L93 Difference]: Finished difference Result 601 states and 733 transitions. [2021-05-01 06:40:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-01 06:40:30,102 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 [2021-05-01 06:40:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:30,104 INFO L225 Difference]: With dead ends: 601 [2021-05-01 06:40:30,104 INFO L226 Difference]: Without dead ends: 502 [2021-05-01 06:40:30,104 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 977.5ms TimeCoverageRelationStatistics Valid=224, Invalid=1668, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 06:40:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-05-01 06:40:30,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 377. [2021-05-01 06:40:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 359 states have (on average 1.2200557103064067) internal successors, (438), 365 states have internal predecessors, (438), 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) [2021-05-01 06:40:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 459 transitions. [2021-05-01 06:40:30,183 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 459 transitions. Word has length 52 [2021-05-01 06:40:30,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:30,183 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 459 transitions. [2021-05-01 06:40:30,183 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) [2021-05-01 06:40:30,183 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 459 transitions. [2021-05-01 06:40:30,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-01 06:40:30,183 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:30,184 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] [2021-05-01 06:40:30,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-01 06:40:30,184 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:30,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:30,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1534105639, now seen corresponding path program 9 times [2021-05-01 06:40:30,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:30,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901137782] [2021-05-01 06:40:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:30,187 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:30,188 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:30,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:30,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:30,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:30,251 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:40:30,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:30,264 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:40:30,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:30,268 INFO L142 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size [2021-05-01 06:40:30,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:30,282 INFO L142 QuantifierPusher]: treesize reduction 14, result has 73.6 percent of original size [2021-05-01 06:40:30,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:40:30,288 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-05-01 06:40:30,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:30,300 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-05-01 06:40:30,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:30,305 INFO L142 QuantifierPusher]: treesize reduction 18, result has 59.1 percent of original size [2021-05-01 06:40:30,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:30,316 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-05-01 06:40:30,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:30,328 INFO L142 QuantifierPusher]: treesize reduction 20, result has 51.2 percent of original size [2021-05-01 06:40:30,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:30,333 INFO L142 QuantifierPusher]: treesize reduction 44, result has 64.2 percent of original size [2021-05-01 06:40:30,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:40:30,357 INFO L142 QuantifierPusher]: treesize reduction 40, result has 68.5 percent of original size [2021-05-01 06:40:30,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:40:30,386 INFO L142 QuantifierPusher]: treesize reduction 40, result has 65.8 percent of original size [2021-05-01 06:40:30,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:40:30,423 INFO L142 QuantifierPusher]: treesize reduction 40, result has 65.5 percent of original size [2021-05-01 06:40:30,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:40:30,449 INFO L142 QuantifierPusher]: treesize reduction 28, result has 60.0 percent of original size [2021-05-01 06:40:30,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:40:30,469 INFO L142 QuantifierPusher]: treesize reduction 38, result has 51.9 percent of original size [2021-05-01 06:40:30,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:30,501 INFO L142 QuantifierPusher]: treesize reduction 28, result has 71.7 percent of original size [2021-05-01 06:40:30,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:40:30,528 INFO L142 QuantifierPusher]: treesize reduction 30, result has 57.7 percent of original size [2021-05-01 06:40:30,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:30,530 INFO L142 QuantifierPusher]: treesize reduction 30, result has 57.7 percent of original size [2021-05-01 06:40:30,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:30,549 INFO L142 QuantifierPusher]: treesize reduction 25, result has 77.7 percent of original size [2021-05-01 06:40:30,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:40:30,577 INFO L142 QuantifierPusher]: treesize reduction 24, result has 68.8 percent of original size [2021-05-01 06:40:30,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:40:30,603 INFO L142 QuantifierPusher]: treesize reduction 20, result has 64.3 percent of original size [2021-05-01 06:40:30,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:30,625 INFO L142 QuantifierPusher]: treesize reduction 20, result has 64.3 percent of original size [2021-05-01 06:40:30,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:30,659 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:40:30,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:30,676 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:40:30,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:30,690 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-05-01 06:40:30,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:30,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:30,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:30,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:30,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:30,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:30,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:30,794 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:30,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901137782] [2021-05-01 06:40:30,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1901137782] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:30,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:30,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-01 06:40:30,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658560087] [2021-05-01 06:40:30,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-01 06:40:30,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:30,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-01 06:40:30,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2021-05-01 06:40:30,795 INFO L87 Difference]: Start difference. First operand 377 states and 459 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) [2021-05-01 06:40:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:32,006 INFO L93 Difference]: Finished difference Result 528 states and 639 transitions. [2021-05-01 06:40:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-01 06:40:32,006 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 [2021-05-01 06:40:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:32,007 INFO L225 Difference]: With dead ends: 528 [2021-05-01 06:40:32,007 INFO L226 Difference]: Without dead ends: 378 [2021-05-01 06:40:32,008 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 964.5ms TimeCoverageRelationStatistics Valid=334, Invalid=1922, Unknown=0, NotChecked=0, Total=2256 [2021-05-01 06:40:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-05-01 06:40:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 305. [2021-05-01 06:40:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 286 states have (on average 1.1783216783216783) internal successors, (337), 292 states have internal predecessors, (337), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (10), 4 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-01 06:40:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 358 transitions. [2021-05-01 06:40:32,076 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 358 transitions. Word has length 52 [2021-05-01 06:40:32,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:32,076 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 358 transitions. [2021-05-01 06:40:32,076 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) [2021-05-01 06:40:32,076 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 358 transitions. [2021-05-01 06:40:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-01 06:40:32,077 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:32,077 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] [2021-05-01 06:40:32,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-01 06:40:32,077 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:32,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:32,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2038277613, now seen corresponding path program 10 times [2021-05-01 06:40:32,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:32,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310688305] [2021-05-01 06:40:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:32,081 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:32,081 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:32,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:32,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:32,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:32,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:32,146 INFO L142 QuantifierPusher]: treesize reduction 18, result has 59.1 percent of original size [2021-05-01 06:40:32,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:32,157 INFO L142 QuantifierPusher]: treesize reduction 18, result has 59.1 percent of original size [2021-05-01 06:40:32,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:32,168 INFO L142 QuantifierPusher]: treesize reduction 66, result has 35.3 percent of original size [2021-05-01 06:40:32,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:32,180 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-05-01 06:40:32,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:32,192 INFO L142 QuantifierPusher]: treesize reduction 16, result has 15.8 percent of original size [2021-05-01 06:40:32,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:32,206 INFO L142 QuantifierPusher]: treesize reduction 17, result has 29.2 percent of original size [2021-05-01 06:40:32,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:32,209 INFO L142 QuantifierPusher]: treesize reduction 14, result has 63.2 percent of original size [2021-05-01 06:40:32,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:32,289 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-05-01 06:40:32,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:32,309 INFO L142 QuantifierPusher]: treesize reduction 56, result has 47.7 percent of original size [2021-05-01 06:40:32,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:40:32,336 INFO L142 QuantifierPusher]: treesize reduction 48, result has 60.7 percent of original size [2021-05-01 06:40:32,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:40:32,349 INFO L142 QuantifierPusher]: treesize reduction 48, result has 63.9 percent of original size [2021-05-01 06:40:32,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-05-01 06:40:32,399 INFO L142 QuantifierPusher]: treesize reduction 48, result has 63.4 percent of original size [2021-05-01 06:40:32,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:40:32,433 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-05-01 06:40:32,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:32,455 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-05-01 06:40:32,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:32,484 INFO L142 QuantifierPusher]: treesize reduction 38, result has 69.4 percent of original size [2021-05-01 06:40:32,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:40:32,525 INFO L142 QuantifierPusher]: treesize reduction 10, result has 74.4 percent of original size [2021-05-01 06:40:32,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:32,546 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:40:32,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:40:32,567 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:40:32,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:32,584 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:40:32,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:32,599 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:40:32,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:32,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:32,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:32,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:32,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:32,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:32,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:32,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:32,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:32,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:32,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:32,706 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:32,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310688305] [2021-05-01 06:40:32,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1310688305] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:32,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:32,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 06:40:32,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787492532] [2021-05-01 06:40:32,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 06:40:32,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:32,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 06:40:32,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-05-01 06:40:32,707 INFO L87 Difference]: Start difference. First operand 305 states and 358 transitions. Second operand has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 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) [2021-05-01 06:40:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:33,835 INFO L93 Difference]: Finished difference Result 441 states and 523 transitions. [2021-05-01 06:40:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-01 06:40:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 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 [2021-05-01 06:40:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:33,837 INFO L225 Difference]: With dead ends: 441 [2021-05-01 06:40:33,837 INFO L226 Difference]: Without dead ends: 439 [2021-05-01 06:40:33,838 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 916.5ms TimeCoverageRelationStatistics Valid=233, Invalid=1249, Unknown=0, NotChecked=0, Total=1482 [2021-05-01 06:40:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-05-01 06:40:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 311. [2021-05-01 06:40:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 292 states have (on average 1.178082191780822) internal successors, (344), 298 states have internal predecessors, (344), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (10), 4 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-01 06:40:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 365 transitions. [2021-05-01 06:40:33,922 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 365 transitions. Word has length 52 [2021-05-01 06:40:33,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:33,922 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 365 transitions. [2021-05-01 06:40:33,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 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) [2021-05-01 06:40:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 365 transitions. [2021-05-01 06:40:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 06:40:33,923 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:33,923 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] [2021-05-01 06:40:33,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-01 06:40:33,923 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash 650625165, now seen corresponding path program 4 times [2021-05-01 06:40:33,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:33,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213597524] [2021-05-01 06:40:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:33,973 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:33,974 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:34,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:34,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:34,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:34,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:34,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:34,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:34,081 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-05-01 06:40:34,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:34,085 INFO L142 QuantifierPusher]: treesize reduction 16, result has 23.8 percent of original size [2021-05-01 06:40:34,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:34,089 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-05-01 06:40:34,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:34,095 INFO L142 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-05-01 06:40:34,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:34,101 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-05-01 06:40:34,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:40:34,114 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-05-01 06:40:34,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:34,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:34,137 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size [2021-05-01 06:40:34,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:34,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:40:34,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:34,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:34,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:34,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:34,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:34,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-01 06:40:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:34,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:34,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:34,225 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:34,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213597524] [2021-05-01 06:40:34,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1213597524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:34,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:34,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 06:40:34,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168834063] [2021-05-01 06:40:34,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 06:40:34,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:34,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 06:40:34,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:40:34,226 INFO L87 Difference]: Start difference. First operand 311 states and 365 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) [2021-05-01 06:40:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:35,330 INFO L93 Difference]: Finished difference Result 411 states and 485 transitions. [2021-05-01 06:40:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-01 06:40:35,330 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 [2021-05-01 06:40:35,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:35,332 INFO L225 Difference]: With dead ends: 411 [2021-05-01 06:40:35,332 INFO L226 Difference]: Without dead ends: 409 [2021-05-01 06:40:35,332 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 564.4ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-05-01 06:40:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-05-01 06:40:35,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 311. [2021-05-01 06:40:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 292 states have (on average 1.178082191780822) internal successors, (344), 298 states have internal predecessors, (344), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (10), 4 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-01 06:40:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 365 transitions. [2021-05-01 06:40:35,414 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 365 transitions. Word has length 55 [2021-05-01 06:40:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:35,414 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 365 transitions. [2021-05-01 06:40:35,414 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) [2021-05-01 06:40:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 365 transitions. [2021-05-01 06:40:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-01 06:40:35,415 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:35,415 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] [2021-05-01 06:40:35,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-01 06:40:35,415 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:35,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1147005369, now seen corresponding path program 4 times [2021-05-01 06:40:35,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:35,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233663178] [2021-05-01 06:40:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:35,421 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:35,422 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:35,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:35,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:35,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:35,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:35,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:35,483 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:40:35,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:35,486 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-05-01 06:40:35,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:40:35,489 INFO L142 QuantifierPusher]: treesize reduction 8, result has 78.4 percent of original size [2021-05-01 06:40:35,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:35,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:35,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:40:35,529 INFO L142 QuantifierPusher]: treesize reduction 19, result has 75.9 percent of original size [2021-05-01 06:40:35,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:40:35,556 INFO L142 QuantifierPusher]: treesize reduction 19, result has 74.0 percent of original size [2021-05-01 06:40:35,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:40:35,590 INFO L142 QuantifierPusher]: treesize reduction 19, result has 73.2 percent of original size [2021-05-01 06:40:35,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:40:35,618 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:40:35,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:35,630 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 06:40:35,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:40:35,644 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-05-01 06:40:35,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:35,660 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:40:35,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:40:35,678 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-05-01 06:40:35,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:35,681 INFO L142 QuantifierPusher]: treesize reduction 27, result has 70.3 percent of original size [2021-05-01 06:40:35,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:40:35,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:35,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:35,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:35,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:35,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:35,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-01 06:40:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:35,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-05-01 06:40:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:35,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:35,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:35,773 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:35,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233663178] [2021-05-01 06:40:35,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1233663178] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:35,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:35,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 06:40:35,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469181342] [2021-05-01 06:40:35,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-01 06:40:35,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:35,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-01 06:40:35,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-05-01 06:40:35,774 INFO L87 Difference]: Start difference. First operand 311 states and 365 transitions. Second operand has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 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) [2021-05-01 06:40:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:36,515 INFO L93 Difference]: Finished difference Result 385 states and 454 transitions. [2021-05-01 06:40:36,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-01 06:40:36,515 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 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 [2021-05-01 06:40:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:36,516 INFO L225 Difference]: With dead ends: 385 [2021-05-01 06:40:36,516 INFO L226 Difference]: Without dead ends: 383 [2021-05-01 06:40:36,517 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 539.4ms TimeCoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 06:40:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-05-01 06:40:36,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 358. [2021-05-01 06:40:36,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 330 states have (on average 1.1666666666666667) internal successors, (385), 340 states have internal predecessors, (385), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 8 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-01 06:40:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 422 transitions. [2021-05-01 06:40:36,609 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 422 transitions. Word has length 57 [2021-05-01 06:40:36,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:36,610 INFO L480 AbstractCegarLoop]: Abstraction has 358 states and 422 transitions. [2021-05-01 06:40:36,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 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) [2021-05-01 06:40:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 422 transitions. [2021-05-01 06:40:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 06:40:36,610 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:36,610 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] [2021-05-01 06:40:36,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-01 06:40:36,611 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:36,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1946369156, now seen corresponding path program 11 times [2021-05-01 06:40:36,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:36,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703476173] [2021-05-01 06:40:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:36,616 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:36,616 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:36,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:36,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:36,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:36,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:36,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:36,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:36,728 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:40:36,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:36,741 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:40:36,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:36,744 INFO L142 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-05-01 06:40:36,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:40:36,758 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.1 percent of original size [2021-05-01 06:40:36,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:40:36,763 INFO L142 QuantifierPusher]: treesize reduction 21, result has 66.1 percent of original size [2021-05-01 06:40:36,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:36,778 INFO L142 QuantifierPusher]: treesize reduction 21, result has 61.1 percent of original size [2021-05-01 06:40:36,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:36,784 INFO L142 QuantifierPusher]: treesize reduction 42, result has 47.5 percent of original size [2021-05-01 06:40:36,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:36,800 INFO L142 QuantifierPusher]: treesize reduction 42, result has 41.7 percent of original size [2021-05-01 06:40:36,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:40:36,806 INFO L142 QuantifierPusher]: treesize reduction 38, result has 32.1 percent of original size [2021-05-01 06:40:36,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:36,815 INFO L142 QuantifierPusher]: treesize reduction 40, result has 34.4 percent of original size [2021-05-01 06:40:36,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:36,819 INFO L142 QuantifierPusher]: treesize reduction 82, result has 34.4 percent of original size [2021-05-01 06:40:36,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:40:36,836 INFO L142 QuantifierPusher]: treesize reduction 74, result has 45.6 percent of original size [2021-05-01 06:40:36,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:40:36,874 INFO L142 QuantifierPusher]: treesize reduction 74, result has 49.3 percent of original size [2021-05-01 06:40:36,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:40:37,034 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2021-05-01 06:40:37,036 INFO L142 QuantifierPusher]: treesize reduction 74, result has 48.6 percent of original size [2021-05-01 06:40:37,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:40:37,075 INFO L142 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-05-01 06:40:37,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:40:37,099 INFO L142 QuantifierPusher]: treesize reduction 51, result has 52.3 percent of original size [2021-05-01 06:40:37,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:40:37,134 INFO L142 QuantifierPusher]: treesize reduction 41, result has 69.9 percent of original size [2021-05-01 06:40:37,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 06:40:37,179 INFO L142 QuantifierPusher]: treesize reduction 43, result has 60.2 percent of original size [2021-05-01 06:40:37,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:40:37,195 INFO L142 QuantifierPusher]: treesize reduction 44, result has 59.6 percent of original size [2021-05-01 06:40:37,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:40:37,228 INFO L142 QuantifierPusher]: treesize reduction 75, result has 62.5 percent of original size [2021-05-01 06:40:37,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-05-01 06:40:37,290 INFO L142 QuantifierPusher]: treesize reduction 56, result has 54.8 percent of original size [2021-05-01 06:40:37,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:40:37,308 INFO L142 QuantifierPusher]: treesize reduction 55, result has 54.9 percent of original size [2021-05-01 06:40:37,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:40:37,344 INFO L142 QuantifierPusher]: treesize reduction 41, result has 68.9 percent of original size [2021-05-01 06:40:37,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 06:40:37,384 INFO L142 QuantifierPusher]: treesize reduction 57, result has 63.9 percent of original size [2021-05-01 06:40:37,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 06:40:37,444 INFO L142 QuantifierPusher]: treesize reduction 28, result has 66.3 percent of original size [2021-05-01 06:40:37,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:40:37,486 INFO L142 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-05-01 06:40:37,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:37,504 INFO L142 QuantifierPusher]: treesize reduction 29, result has 55.4 percent of original size [2021-05-01 06:40:37,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:37,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:37,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:37,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:37,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:37,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:37,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:37,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:37,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:37,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:37,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:37,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:37,610 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:37,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703476173] [2021-05-01 06:40:37,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1703476173] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:37,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:37,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-01 06:40:37,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491860675] [2021-05-01 06:40:37,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-01 06:40:37,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:37,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-01 06:40:37,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2021-05-01 06:40:37,612 INFO L87 Difference]: Start difference. First operand 358 states and 422 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) [2021-05-01 06:40:39,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:39,223 INFO L93 Difference]: Finished difference Result 540 states and 643 transitions. [2021-05-01 06:40:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-01 06:40:39,223 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 [2021-05-01 06:40:39,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:39,225 INFO L225 Difference]: With dead ends: 540 [2021-05-01 06:40:39,225 INFO L226 Difference]: Without dead ends: 538 [2021-05-01 06:40:39,226 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 1467.2ms TimeCoverageRelationStatistics Valid=303, Invalid=2453, Unknown=0, NotChecked=0, Total=2756 [2021-05-01 06:40:39,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-05-01 06:40:39,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 397. [2021-05-01 06:40:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 365 states have (on average 1.16986301369863) internal successors, (427), 377 states have internal predecessors, (427), 21 states have call successors, (21), 11 states have call predecessors, (21), 10 states have return successors, (20), 8 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-01 06:40:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 468 transitions. [2021-05-01 06:40:39,330 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 468 transitions. Word has length 55 [2021-05-01 06:40:39,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:39,330 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 468 transitions. [2021-05-01 06:40:39,330 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) [2021-05-01 06:40:39,330 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 468 transitions. [2021-05-01 06:40:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 06:40:39,331 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:39,331 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] [2021-05-01 06:40:39,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-01 06:40:39,331 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:39,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:39,332 INFO L82 PathProgramCache]: Analyzing trace with hash -426979644, now seen corresponding path program 12 times [2021-05-01 06:40:39,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:39,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703438215] [2021-05-01 06:40:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:39,335 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:39,336 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:39,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:39,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:39,380 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:40:39,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:39,391 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:40:39,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:39,403 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:40:39,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:39,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-05-01 06:40:39,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:39,430 INFO L142 QuantifierPusher]: treesize reduction 16, result has 15.8 percent of original size [2021-05-01 06:40:39,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:39,436 INFO L142 QuantifierPusher]: treesize reduction 17, result has 29.2 percent of original size [2021-05-01 06:40:39,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:39,439 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-05-01 06:40:39,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:40:39,451 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-05-01 06:40:39,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:40:39,465 INFO L142 QuantifierPusher]: treesize reduction 12, result has 68.4 percent of original size [2021-05-01 06:40:39,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:39,487 INFO L142 QuantifierPusher]: treesize reduction 12, result has 68.4 percent of original size [2021-05-01 06:40:39,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:39,515 INFO L142 QuantifierPusher]: treesize reduction 41, result has 55.4 percent of original size [2021-05-01 06:40:39,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:40:39,548 INFO L142 QuantifierPusher]: treesize reduction 33, result has 67.3 percent of original size [2021-05-01 06:40:39,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:40:39,574 INFO L142 QuantifierPusher]: treesize reduction 33, result has 70.3 percent of original size [2021-05-01 06:40:39,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 06:40:39,606 INFO L142 QuantifierPusher]: treesize reduction 33, result has 69.7 percent of original size [2021-05-01 06:40:39,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:40:39,635 INFO L142 QuantifierPusher]: treesize reduction 10, result has 74.4 percent of original size [2021-05-01 06:40:39,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:40:39,657 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:40:39,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:40:39,681 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:40:39,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:39,701 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:40:39,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:39,731 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:40:39,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:39,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:39,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:39,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:39,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:39,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:39,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:39,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:39,846 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:39,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703438215] [2021-05-01 06:40:39,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [703438215] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:39,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:39,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 06:40:39,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586127934] [2021-05-01 06:40:39,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 06:40:39,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:39,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 06:40:39,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-05-01 06:40:39,847 INFO L87 Difference]: Start difference. First operand 397 states and 468 transitions. Second operand has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 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) [2021-05-01 06:40:41,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:41,494 INFO L93 Difference]: Finished difference Result 498 states and 590 transitions. [2021-05-01 06:40:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-01 06:40:41,494 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 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 [2021-05-01 06:40:41,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:41,496 INFO L225 Difference]: With dead ends: 498 [2021-05-01 06:40:41,496 INFO L226 Difference]: Without dead ends: 496 [2021-05-01 06:40:41,497 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1218.2ms TimeCoverageRelationStatistics Valid=440, Invalid=2640, Unknown=0, NotChecked=0, Total=3080 [2021-05-01 06:40:41,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-05-01 06:40:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 406. [2021-05-01 06:40:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 374 states have (on average 1.1737967914438503) internal successors, (439), 386 states have internal predecessors, (439), 21 states have call successors, (21), 11 states have call predecessors, (21), 10 states have return successors, (20), 8 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-01 06:40:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 480 transitions. [2021-05-01 06:40:41,609 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 480 transitions. Word has length 55 [2021-05-01 06:40:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:41,610 INFO L480 AbstractCegarLoop]: Abstraction has 406 states and 480 transitions. [2021-05-01 06:40:41,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 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) [2021-05-01 06:40:41,610 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 480 transitions. [2021-05-01 06:40:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 06:40:41,611 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:41,611 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] [2021-05-01 06:40:41,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-01 06:40:41,611 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:41,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:41,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1046366456, now seen corresponding path program 13 times [2021-05-01 06:40:41,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:41,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114366318] [2021-05-01 06:40:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:41,614 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:41,615 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:41,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:41,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:41,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:41,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:41,665 INFO L142 QuantifierPusher]: treesize reduction 18, result has 59.1 percent of original size [2021-05-01 06:40:41,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:41,675 INFO L142 QuantifierPusher]: treesize reduction 18, result has 59.1 percent of original size [2021-05-01 06:40:41,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:41,686 INFO L142 QuantifierPusher]: treesize reduction 66, result has 35.3 percent of original size [2021-05-01 06:40:41,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:41,698 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-05-01 06:40:41,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:41,710 INFO L142 QuantifierPusher]: treesize reduction 16, result has 15.8 percent of original size [2021-05-01 06:40:41,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:41,716 INFO L142 QuantifierPusher]: treesize reduction 17, result has 29.2 percent of original size [2021-05-01 06:40:41,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:41,719 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:41,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:41,723 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-05-01 06:40:41,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:41,740 INFO L142 QuantifierPusher]: treesize reduction 57, result has 50.0 percent of original size [2021-05-01 06:40:41,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:40:41,769 INFO L142 QuantifierPusher]: treesize reduction 43, result has 63.6 percent of original size [2021-05-01 06:40:41,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:40:41,801 INFO L142 QuantifierPusher]: treesize reduction 43, result has 66.7 percent of original size [2021-05-01 06:40:41,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:40:41,838 INFO L142 QuantifierPusher]: treesize reduction 43, result has 65.9 percent of original size [2021-05-01 06:40:41,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:40:41,880 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-05-01 06:40:41,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:41,903 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-05-01 06:40:41,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:41,927 INFO L142 QuantifierPusher]: treesize reduction 43, result has 67.4 percent of original size [2021-05-01 06:40:41,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-05-01 06:40:41,973 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-05-01 06:40:41,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:41,975 INFO L142 QuantifierPusher]: treesize reduction 23, result has 57.4 percent of original size [2021-05-01 06:40:41,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:41,999 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.4 percent of original size [2021-05-01 06:40:42,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:40:42,029 INFO L142 QuantifierPusher]: treesize reduction 38, result has 65.8 percent of original size [2021-05-01 06:40:42,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:40:42,070 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:40:42,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:42,087 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:40:42,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:42,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:42,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:42,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:42,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:42,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:42,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:42,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:42,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:42,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:42,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:42,193 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:42,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114366318] [2021-05-01 06:40:42,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [114366318] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:42,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:42,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 06:40:42,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616826898] [2021-05-01 06:40:42,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 06:40:42,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:42,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 06:40:42,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2021-05-01 06:40:42,194 INFO L87 Difference]: Start difference. First operand 406 states and 480 transitions. Second operand has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 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) [2021-05-01 06:40:43,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:43,742 INFO L93 Difference]: Finished difference Result 525 states and 623 transitions. [2021-05-01 06:40:43,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-01 06:40:43,743 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 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 [2021-05-01 06:40:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:43,744 INFO L225 Difference]: With dead ends: 525 [2021-05-01 06:40:43,744 INFO L226 Difference]: Without dead ends: 523 [2021-05-01 06:40:43,745 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1101.4ms TimeCoverageRelationStatistics Valid=254, Invalid=1816, Unknown=0, NotChecked=0, Total=2070 [2021-05-01 06:40:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-05-01 06:40:43,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 403. [2021-05-01 06:40:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 372 states have (on average 1.1774193548387097) internal successors, (438), 383 states have internal predecessors, (438), 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) [2021-05-01 06:40:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 477 transitions. [2021-05-01 06:40:43,849 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 477 transitions. Word has length 55 [2021-05-01 06:40:43,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:43,849 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 477 transitions. [2021-05-01 06:40:43,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 2.125) internal successors, (51), 23 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) [2021-05-01 06:40:43,850 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 477 transitions. [2021-05-01 06:40:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 06:40:43,850 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:43,850 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] [2021-05-01 06:40:43,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-01 06:40:43,851 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:43,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:43,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1524488624, now seen corresponding path program 11 times [2021-05-01 06:40:43,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:43,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358101438] [2021-05-01 06:40:43,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:43,855 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:43,856 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:43,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:43,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:43,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:43,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:43,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:43,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:43,928 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-05-01 06:40:43,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:43,941 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-05-01 06:40:43,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:43,945 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-05-01 06:40:43,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:43,956 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:40:43,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:43,960 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-05-01 06:40:43,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:43,972 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:40:43,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:43,977 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:40:43,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:43,988 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 06:40:43,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:43,996 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-05-01 06:40:43,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:44,000 INFO L142 QuantifierPusher]: treesize reduction 37, result has 71.1 percent of original size [2021-05-01 06:40:44,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 06:40:44,021 INFO L142 QuantifierPusher]: treesize reduction 38, result has 73.4 percent of original size [2021-05-01 06:40:44,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-05-01 06:40:44,049 INFO L142 QuantifierPusher]: treesize reduction 38, result has 75.5 percent of original size [2021-05-01 06:40:44,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 06:40:44,080 INFO L142 QuantifierPusher]: treesize reduction 18, result has 83.9 percent of original size [2021-05-01 06:40:44,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 06:40:44,113 INFO L142 QuantifierPusher]: treesize reduction 24, result has 79.7 percent of original size [2021-05-01 06:40:44,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 06:40:44,153 INFO L142 QuantifierPusher]: treesize reduction 24, result has 79.5 percent of original size [2021-05-01 06:40:44,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:40:44,190 INFO L142 QuantifierPusher]: treesize reduction 13, result has 86.6 percent of original size [2021-05-01 06:40:44,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:40:44,217 INFO L142 QuantifierPusher]: treesize reduction 13, result has 87.3 percent of original size [2021-05-01 06:40:44,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-05-01 06:40:44,255 INFO L142 QuantifierPusher]: treesize reduction 12, result has 89.2 percent of original size [2021-05-01 06:40:44,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-05-01 06:40:44,287 INFO L142 QuantifierPusher]: treesize reduction 8, result has 90.0 percent of original size [2021-05-01 06:40:44,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:40:44,315 INFO L142 QuantifierPusher]: treesize reduction 8, result has 90.0 percent of original size [2021-05-01 06:40:44,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:40:44,345 INFO L142 QuantifierPusher]: treesize reduction 8, result has 92.9 percent of original size [2021-05-01 06:40:44,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 06:40:44,378 INFO L142 QuantifierPusher]: treesize reduction 8, result has 90.0 percent of original size [2021-05-01 06:40:44,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:40:44,380 INFO L142 QuantifierPusher]: treesize reduction 8, result has 90.0 percent of original size [2021-05-01 06:40:44,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:40:44,413 INFO L142 QuantifierPusher]: treesize reduction 8, result has 94.4 percent of original size [2021-05-01 06:40:44,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-05-01 06:40:44,445 INFO L142 QuantifierPusher]: treesize reduction 40, result has 45.2 percent of original size [2021-05-01 06:40:44,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:40:44,464 INFO L142 QuantifierPusher]: treesize reduction 24, result has 41.5 percent of original size [2021-05-01 06:40:44,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:44,481 INFO L142 QuantifierPusher]: treesize reduction 54, result has 40.0 percent of original size [2021-05-01 06:40:44,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:44,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:44,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:44,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:44,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:44,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:44,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:44,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:44,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:44,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:44,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:44,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:44,593 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:44,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358101438] [2021-05-01 06:40:44,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [358101438] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:44,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:44,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-01 06:40:44,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106121174] [2021-05-01 06:40:44,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-01 06:40:44,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:44,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-01 06:40:44,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-05-01 06:40:44,595 INFO L87 Difference]: Start difference. First operand 403 states and 477 transitions. Second operand has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2021-05-01 06:40:45,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:45,676 INFO L93 Difference]: Finished difference Result 456 states and 539 transitions. [2021-05-01 06:40:45,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-01 06:40:45,677 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 [2021-05-01 06:40:45,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:45,679 INFO L225 Difference]: With dead ends: 456 [2021-05-01 06:40:45,679 INFO L226 Difference]: Without dead ends: 454 [2021-05-01 06:40:45,679 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 999.8ms TimeCoverageRelationStatistics Valid=323, Invalid=1657, Unknown=0, NotChecked=0, Total=1980 [2021-05-01 06:40:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-05-01 06:40:45,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 419. [2021-05-01 06:40:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 386 states have (on average 1.1787564766839378) internal successors, (455), 398 states have internal predecessors, (455), 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) [2021-05-01 06:40:45,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 496 transitions. [2021-05-01 06:40:45,801 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 496 transitions. Word has length 55 [2021-05-01 06:40:45,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:45,801 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 496 transitions. [2021-05-01 06:40:45,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2021-05-01 06:40:45,801 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 496 transitions. [2021-05-01 06:40:45,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 06:40:45,802 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:45,802 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] [2021-05-01 06:40:45,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-01 06:40:45,802 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:45,802 INFO L82 PathProgramCache]: Analyzing trace with hash 337785846, now seen corresponding path program 12 times [2021-05-01 06:40:45,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:45,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94299509] [2021-05-01 06:40:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:45,805 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:45,806 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:45,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:45,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:45,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:45,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:45,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:45,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:45,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:45,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:45,864 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-05-01 06:40:45,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:45,866 INFO L142 QuantifierPusher]: treesize reduction 18, result has 53.8 percent of original size [2021-05-01 06:40:45,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:45,877 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-05-01 06:40:45,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:45,881 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-05-01 06:40:45,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:45,901 INFO L142 QuantifierPusher]: treesize reduction 39, result has 50.6 percent of original size [2021-05-01 06:40:45,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:45,920 INFO L142 QuantifierPusher]: treesize reduction 27, result has 75.2 percent of original size [2021-05-01 06:40:45,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:40:45,961 INFO L142 QuantifierPusher]: treesize reduction 29, result has 73.1 percent of original size [2021-05-01 06:40:45,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:40:45,996 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-05-01 06:40:45,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:46,015 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.0 percent of original size [2021-05-01 06:40:46,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:46,033 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.6 percent of original size [2021-05-01 06:40:46,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:40:46,058 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:40:46,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:46,059 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:40:46,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:46,080 INFO L142 QuantifierPusher]: treesize reduction 15, result has 86.1 percent of original size [2021-05-01 06:40:46,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:40:46,108 INFO L142 QuantifierPusher]: treesize reduction 14, result has 80.3 percent of original size [2021-05-01 06:40:46,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:40:46,135 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:40:46,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:46,159 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:40:46,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:46,183 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:40:46,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:46,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:46,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:46,219 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-05-01 06:40:46,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:46,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:46,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:46,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:46,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:46,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:46,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:46,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:46,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:46,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:46,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:46,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:46,318 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:46,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94299509] [2021-05-01 06:40:46,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [94299509] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:46,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:46,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 06:40:46,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684673222] [2021-05-01 06:40:46,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 06:40:46,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:46,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 06:40:46,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-05-01 06:40:46,319 INFO L87 Difference]: Start difference. First operand 419 states and 496 transitions. Second operand has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 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) [2021-05-01 06:40:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:47,374 INFO L93 Difference]: Finished difference Result 489 states and 579 transitions. [2021-05-01 06:40:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-01 06:40:47,375 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 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 [2021-05-01 06:40:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:47,376 INFO L225 Difference]: With dead ends: 489 [2021-05-01 06:40:47,376 INFO L226 Difference]: Without dead ends: 487 [2021-05-01 06:40:47,377 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 831.3ms TimeCoverageRelationStatistics Valid=245, Invalid=1477, Unknown=0, NotChecked=0, Total=1722 [2021-05-01 06:40:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-05-01 06:40:47,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 422. [2021-05-01 06:40:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 389 states have (on average 1.179948586118252) internal successors, (459), 401 states have internal predecessors, (459), 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) [2021-05-01 06:40:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 500 transitions. [2021-05-01 06:40:47,495 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 500 transitions. Word has length 55 [2021-05-01 06:40:47,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:47,495 INFO L480 AbstractCegarLoop]: Abstraction has 422 states and 500 transitions. [2021-05-01 06:40:47,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 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) [2021-05-01 06:40:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 500 transitions. [2021-05-01 06:40:47,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-01 06:40:47,496 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:47,496 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] [2021-05-01 06:40:47,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-01 06:40:47,496 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:47,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:47,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1285024718, now seen corresponding path program 3 times [2021-05-01 06:40:47,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:47,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575317158] [2021-05-01 06:40:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:47,500 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:47,501 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:47,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:47,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:47,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:47,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:47,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:47,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:47,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:47,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:47,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:47,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:47,583 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-05-01 06:40:47,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:47,586 INFO L142 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-05-01 06:40:47,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:40:47,611 INFO L142 QuantifierPusher]: treesize reduction 40, result has 70.4 percent of original size [2021-05-01 06:40:47,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 06:40:47,658 INFO L142 QuantifierPusher]: treesize reduction 42, result has 71.4 percent of original size [2021-05-01 06:40:47,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-05-01 06:40:47,705 INFO L142 QuantifierPusher]: treesize reduction 42, result has 71.2 percent of original size [2021-05-01 06:40:47,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 06:40:47,747 INFO L142 QuantifierPusher]: treesize reduction 17, result has 74.2 percent of original size [2021-05-01 06:40:47,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:40:47,769 INFO L142 QuantifierPusher]: treesize reduction 22, result has 58.5 percent of original size [2021-05-01 06:40:47,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:47,788 INFO L142 QuantifierPusher]: treesize reduction 40, result has 62.3 percent of original size [2021-05-01 06:40:47,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:40:47,817 INFO L142 QuantifierPusher]: treesize reduction 40, result has 43.7 percent of original size [2021-05-01 06:40:47,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:47,819 INFO L142 QuantifierPusher]: treesize reduction 41, result has 43.1 percent of original size [2021-05-01 06:40:47,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:47,839 INFO L142 QuantifierPusher]: treesize reduction 41, result has 67.7 percent of original size [2021-05-01 06:40:47,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:40:47,880 INFO L142 QuantifierPusher]: treesize reduction 56, result has 50.0 percent of original size [2021-05-01 06:40:47,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:40:47,909 INFO L142 QuantifierPusher]: treesize reduction 56, result has 50.0 percent of original size [2021-05-01 06:40:47,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:40:47,911 INFO L142 QuantifierPusher]: treesize reduction 54, result has 56.1 percent of original size [2021-05-01 06:40:47,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:40:47,949 INFO L142 QuantifierPusher]: treesize reduction 55, result has 58.6 percent of original size [2021-05-01 06:40:47,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 06:40:47,983 INFO L142 QuantifierPusher]: treesize reduction 55, result has 58.0 percent of original size [2021-05-01 06:40:47,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:40:48,015 INFO L142 QuantifierPusher]: treesize reduction 18, result has 68.4 percent of original size [2021-05-01 06:40:48,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:40:48,037 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-05-01 06:40:48,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:40:48,061 INFO L142 QuantifierPusher]: treesize reduction 19, result has 64.8 percent of original size [2021-05-01 06:40:48,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:48,082 INFO L142 QuantifierPusher]: treesize reduction 19, result has 50.0 percent of original size [2021-05-01 06:40:48,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:48,102 INFO L142 QuantifierPusher]: treesize reduction 31, result has 41.5 percent of original size [2021-05-01 06:40:48,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:40:48,124 INFO L142 QuantifierPusher]: treesize reduction 19, result has 55.8 percent of original size [2021-05-01 06:40:48,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:48,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:48,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:48,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:48,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:48,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:48,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:48,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:48,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:48,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:48,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:48,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-01 06:40:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:48,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:48,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:48,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:48,228 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:48,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575317158] [2021-05-01 06:40:48,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [575317158] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:48,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:48,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-01 06:40:48,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329788] [2021-05-01 06:40:48,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-01 06:40:48,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:48,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-01 06:40:48,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2021-05-01 06:40:48,229 INFO L87 Difference]: Start difference. First operand 422 states and 500 transitions. Second operand has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 27 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) [2021-05-01 06:40:50,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:50,652 INFO L93 Difference]: Finished difference Result 548 states and 646 transitions. [2021-05-01 06:40:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-01 06:40:50,653 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 27 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 [2021-05-01 06:40:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:50,654 INFO L225 Difference]: With dead ends: 548 [2021-05-01 06:40:50,654 INFO L226 Difference]: Without dead ends: 546 [2021-05-01 06:40:50,655 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 2081.0ms TimeCoverageRelationStatistics Valid=644, Invalid=4758, Unknown=0, NotChecked=0, Total=5402 [2021-05-01 06:40:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-05-01 06:40:50,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 442. [2021-05-01 06:40:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 410 states have (on average 1.1829268292682926) internal successors, (485), 422 states have internal predecessors, (485), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 7 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-01 06:40:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 524 transitions. [2021-05-01 06:40:50,772 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 524 transitions. Word has length 58 [2021-05-01 06:40:50,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:50,772 INFO L480 AbstractCegarLoop]: Abstraction has 442 states and 524 transitions. [2021-05-01 06:40:50,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 27 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) [2021-05-01 06:40:50,772 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 524 transitions. [2021-05-01 06:40:50,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-01 06:40:50,773 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:50,773 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] [2021-05-01 06:40:50,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-01 06:40:50,773 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:50,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:50,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1642798748, now seen corresponding path program 4 times [2021-05-01 06:40:50,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:50,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184154633] [2021-05-01 06:40:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:50,783 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:50,784 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:50,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:50,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:50,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:50,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:50,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:50,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:50,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:50,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:50,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:50,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:50,851 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-05-01 06:40:50,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:50,854 INFO L142 QuantifierPusher]: treesize reduction 18, result has 53.8 percent of original size [2021-05-01 06:40:50,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:50,865 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-05-01 06:40:50,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:50,870 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-05-01 06:40:50,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:40:50,895 INFO L142 QuantifierPusher]: treesize reduction 38, result has 51.3 percent of original size [2021-05-01 06:40:50,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:50,932 INFO L142 QuantifierPusher]: treesize reduction 52, result has 48.0 percent of original size [2021-05-01 06:40:50,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:50,968 INFO L142 QuantifierPusher]: treesize reduction 52, result has 46.4 percent of original size [2021-05-01 06:40:50,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:40:50,996 INFO L142 QuantifierPusher]: treesize reduction 19, result has 67.8 percent of original size [2021-05-01 06:40:50,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:40:51,017 INFO L142 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-05-01 06:40:51,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:40:51,038 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.3 percent of original size [2021-05-01 06:40:51,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:40:51,063 INFO L142 QuantifierPusher]: treesize reduction 27, result has 71.9 percent of original size [2021-05-01 06:40:51,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:40:51,091 INFO L142 QuantifierPusher]: treesize reduction 28, result has 73.1 percent of original size [2021-05-01 06:40:51,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:40:51,105 INFO L142 QuantifierPusher]: treesize reduction 28, result has 72.3 percent of original size [2021-05-01 06:40:51,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:40:51,119 INFO L142 QuantifierPusher]: treesize reduction 42, result has 64.1 percent of original size [2021-05-01 06:40:51,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:40:51,156 INFO L142 QuantifierPusher]: treesize reduction 42, result has 67.7 percent of original size [2021-05-01 06:40:51,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:40:51,191 INFO L142 QuantifierPusher]: treesize reduction 42, result has 67.2 percent of original size [2021-05-01 06:40:51,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:40:51,228 INFO L142 QuantifierPusher]: treesize reduction 13, result has 70.5 percent of original size [2021-05-01 06:40:51,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:40:51,253 INFO L142 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-05-01 06:40:51,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:40:51,279 INFO L142 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-05-01 06:40:51,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:51,299 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 06:40:51,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:40:51,318 INFO L142 QuantifierPusher]: treesize reduction 11, result has 68.6 percent of original size [2021-05-01 06:40:51,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:40:51,338 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-05-01 06:40:51,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:51,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:51,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:51,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:51,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:51,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:51,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:51,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:51,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:51,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:51,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:51,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-01 06:40:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:51,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:51,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:51,446 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:51,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184154633] [2021-05-01 06:40:51,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [184154633] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:51,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:51,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-01 06:40:51,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557503602] [2021-05-01 06:40:51,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-01 06:40:51,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:51,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-01 06:40:51,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2021-05-01 06:40:51,447 INFO L87 Difference]: Start difference. First operand 442 states and 524 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) [2021-05-01 06:40:52,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:52,529 INFO L93 Difference]: Finished difference Result 474 states and 561 transitions. [2021-05-01 06:40:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-01 06:40:52,530 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 [2021-05-01 06:40:52,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:52,531 INFO L225 Difference]: With dead ends: 474 [2021-05-01 06:40:52,531 INFO L226 Difference]: Without dead ends: 472 [2021-05-01 06:40:52,532 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 958.5ms TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 06:40:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-05-01 06:40:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 440. [2021-05-01 06:40:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 408 states have (on average 1.1838235294117647) internal successors, (483), 421 states have internal predecessors, (483), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 6 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-01 06:40:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 522 transitions. [2021-05-01 06:40:52,656 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 522 transitions. Word has length 58 [2021-05-01 06:40:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:52,656 INFO L480 AbstractCegarLoop]: Abstraction has 440 states and 522 transitions. [2021-05-01 06:40:52,656 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) [2021-05-01 06:40:52,656 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 522 transitions. [2021-05-01 06:40:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-01 06:40:52,657 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:52,657 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] [2021-05-01 06:40:52,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-01 06:40:52,657 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:52,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:52,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1797092794, now seen corresponding path program 5 times [2021-05-01 06:40:52,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:52,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693971919] [2021-05-01 06:40:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:52,661 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:52,662 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:52,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:52,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:52,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:52,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:52,725 INFO L142 QuantifierPusher]: treesize reduction 21, result has 70.4 percent of original size [2021-05-01 06:40:52,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:40:52,746 INFO L142 QuantifierPusher]: treesize reduction 16, result has 15.8 percent of original size [2021-05-01 06:40:52,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:52,751 INFO L142 QuantifierPusher]: treesize reduction 17, result has 29.2 percent of original size [2021-05-01 06:40:52,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:52,754 INFO L142 QuantifierPusher]: treesize reduction 13, result has 63.9 percent of original size [2021-05-01 06:40:52,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:52,758 INFO L142 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size [2021-05-01 06:40:52,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:40:52,764 INFO L142 QuantifierPusher]: treesize reduction 42, result has 53.8 percent of original size [2021-05-01 06:40:52,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:40:52,786 INFO L142 QuantifierPusher]: treesize reduction 41, result has 61.7 percent of original size [2021-05-01 06:40:52,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:40:52,823 INFO L142 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-05-01 06:40:52,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:52,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:52,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:52,847 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-05-01 06:40:52,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:40:52,861 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:40:52,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:40:52,878 INFO L142 QuantifierPusher]: treesize reduction 26, result has 69.0 percent of original size [2021-05-01 06:40:52,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:40:52,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:52,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:52,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:52,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:52,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:52,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-01 06:40:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:52,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-01 06:40:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:52,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:52,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:52,984 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:52,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693971919] [2021-05-01 06:40:52,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1693971919] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:52,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:52,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 06:40:52,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905999692] [2021-05-01 06:40:52,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-01 06:40:52,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:52,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-01 06:40:52,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-05-01 06:40:52,987 INFO L87 Difference]: Start difference. First operand 440 states and 522 transitions. Second operand has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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) [2021-05-01 06:40:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:53,723 INFO L93 Difference]: Finished difference Result 490 states and 581 transitions. [2021-05-01 06:40:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-01 06:40:53,723 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 [2021-05-01 06:40:53,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:53,725 INFO L225 Difference]: With dead ends: 490 [2021-05-01 06:40:53,725 INFO L226 Difference]: Without dead ends: 488 [2021-05-01 06:40:53,725 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 436.5ms TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2021-05-01 06:40:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-05-01 06:40:53,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 449. [2021-05-01 06:40:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 416 states have (on average 1.1826923076923077) internal successors, (492), 430 states have internal predecessors, (492), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-01 06:40:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 533 transitions. [2021-05-01 06:40:53,846 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 533 transitions. Word has length 60 [2021-05-01 06:40:53,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:53,847 INFO L480 AbstractCegarLoop]: Abstraction has 449 states and 533 transitions. [2021-05-01 06:40:53,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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) [2021-05-01 06:40:53,847 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 533 transitions. [2021-05-01 06:40:53,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-01 06:40:53,847 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:53,848 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:40:53,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-01 06:40:53,848 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:53,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:53,848 INFO L82 PathProgramCache]: Analyzing trace with hash -141469330, now seen corresponding path program 14 times [2021-05-01 06:40:53,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:53,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112940934] [2021-05-01 06:40:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:53,851 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:53,852 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:53,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:53,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:53,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:53,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:53,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:53,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:53,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:53,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:40:53,916 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.0 percent of original size [2021-05-01 06:40:53,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:40:53,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:53,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:53,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:53,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:40:53,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:53,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:54,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:54,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:54,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:54,026 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:54,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112940934] [2021-05-01 06:40:54,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1112940934] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:54,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:54,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-01 06:40:54,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566183168] [2021-05-01 06:40:54,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 06:40:54,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:54,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 06:40:54,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-05-01 06:40:54,027 INFO L87 Difference]: Start difference. First operand 449 states and 533 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) [2021-05-01 06:40:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:54,817 INFO L93 Difference]: Finished difference Result 942 states and 1152 transitions. [2021-05-01 06:40:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-01 06:40:54,818 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 58 [2021-05-01 06:40:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:54,820 INFO L225 Difference]: With dead ends: 942 [2021-05-01 06:40:54,820 INFO L226 Difference]: Without dead ends: 820 [2021-05-01 06:40:54,820 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 312.3ms TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-05-01 06:40:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-05-01 06:40:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 642. [2021-05-01 06:40:54,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 609 states have (on average 1.1986863711001643) internal successors, (730), 623 states have internal predecessors, (730), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-01 06:40:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 771 transitions. [2021-05-01 06:40:54,993 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 771 transitions. Word has length 58 [2021-05-01 06:40:54,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:54,993 INFO L480 AbstractCegarLoop]: Abstraction has 642 states and 771 transitions. [2021-05-01 06:40:54,993 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) [2021-05-01 06:40:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 771 transitions. [2021-05-01 06:40:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-01 06:40:54,994 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:54,995 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] [2021-05-01 06:40:54,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-01 06:40:54,995 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:54,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:54,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1104308479, now seen corresponding path program 15 times [2021-05-01 06:40:54,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:54,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042074545] [2021-05-01 06:40:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:54,998 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:54,999 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:55,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:55,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:55,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:55,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:55,045 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:40:55,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:55,047 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-05-01 06:40:55,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:55,056 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-05-01 06:40:55,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:55,065 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-05-01 06:40:55,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:55,075 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-05-01 06:40:55,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:55,086 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-05-01 06:40:55,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:55,099 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-05-01 06:40:55,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:55,113 INFO L142 QuantifierPusher]: treesize reduction 30, result has 40.0 percent of original size [2021-05-01 06:40:55,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:40:55,129 INFO L142 QuantifierPusher]: treesize reduction 22, result has 66.2 percent of original size [2021-05-01 06:40:55,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:40:55,141 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.4 percent of original size [2021-05-01 06:40:55,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:40:55,183 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-05-01 06:40:55,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:40:55,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:40:55,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:40:55,227 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-05-01 06:40:55,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:40:55,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:55,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:55,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:55,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:55,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:55,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:55,317 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:55,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042074545] [2021-05-01 06:40:55,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1042074545] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:55,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:55,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 06:40:55,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063503835] [2021-05-01 06:40:55,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-01 06:40:55,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:55,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-01 06:40:55,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-05-01 06:40:55,318 INFO L87 Difference]: Start difference. First operand 642 states and 771 transitions. Second operand has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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) [2021-05-01 06:40:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:40:57,562 INFO L93 Difference]: Finished difference Result 1025 states and 1247 transitions. [2021-05-01 06:40:57,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-01 06:40:57,562 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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 [2021-05-01 06:40:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:40:57,565 INFO L225 Difference]: With dead ends: 1025 [2021-05-01 06:40:57,565 INFO L226 Difference]: Without dead ends: 1023 [2021-05-01 06:40:57,566 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 1139.1ms TimeCoverageRelationStatistics Valid=555, Invalid=5607, Unknown=0, NotChecked=0, Total=6162 [2021-05-01 06:40:57,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2021-05-01 06:40:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 660. [2021-05-01 06:40:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 627 states have (on average 1.2073365231259967) internal successors, (757), 641 states have internal predecessors, (757), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-01 06:40:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 798 transitions. [2021-05-01 06:40:57,757 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 798 transitions. Word has length 58 [2021-05-01 06:40:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:40:57,757 INFO L480 AbstractCegarLoop]: Abstraction has 660 states and 798 transitions. [2021-05-01 06:40:57,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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) [2021-05-01 06:40:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 798 transitions. [2021-05-01 06:40:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-01 06:40:57,758 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:40:57,758 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] [2021-05-01 06:40:57,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-01 06:40:57,758 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:40:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:40:57,759 INFO L82 PathProgramCache]: Analyzing trace with hash -266865911, now seen corresponding path program 13 times [2021-05-01 06:40:57,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:40:57,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545591174] [2021-05-01 06:40:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:40:57,762 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:40:57,763 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:40:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:57,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:57,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:57,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:57,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:57,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:57,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:57,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:57,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:57,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:57,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:40:57,831 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:40:57,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:40:57,844 INFO L142 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-05-01 06:40:57,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:40:57,849 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-05-01 06:40:57,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:40:57,852 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-05-01 06:40:57,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:40:57,856 INFO L142 QuantifierPusher]: treesize reduction 19, result has 42.4 percent of original size [2021-05-01 06:40:57,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:40:57,866 INFO L142 QuantifierPusher]: treesize reduction 19, result has 44.1 percent of original size [2021-05-01 06:40:57,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:40:57,869 INFO L142 QuantifierPusher]: treesize reduction 19, result has 38.7 percent of original size [2021-05-01 06:40:57,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:57,873 INFO L142 QuantifierPusher]: treesize reduction 19, result has 38.7 percent of original size [2021-05-01 06:40:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:40:57,878 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-05-01 06:40:57,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:40:57,893 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.9 percent of original size [2021-05-01 06:40:57,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:40:57,911 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 06:40:57,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:40:57,932 INFO L142 QuantifierPusher]: treesize reduction 11, result has 70.3 percent of original size [2021-05-01 06:40:57,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:40:57,943 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-05-01 06:40:57,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:40:57,973 INFO L142 QuantifierPusher]: treesize reduction 34, result has 62.2 percent of original size [2021-05-01 06:40:57,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:40:58,011 INFO L142 QuantifierPusher]: treesize reduction 24, result has 78.0 percent of original size [2021-05-01 06:40:58,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-05-01 06:40:58,064 INFO L142 QuantifierPusher]: treesize reduction 24, result has 77.4 percent of original size [2021-05-01 06:40:58,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:40:58,111 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.1 percent of original size [2021-05-01 06:40:58,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:40:58,139 INFO L142 QuantifierPusher]: treesize reduction 14, result has 75.4 percent of original size [2021-05-01 06:40:58,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:40:58,168 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:40:58,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:40:58,191 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:40:58,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:40:58,210 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-05-01 06:40:58,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:40:58,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:40:58,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:58,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:40:58,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:58,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:40:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:40:58,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:40:58,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:40:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:40:58,320 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:40:58,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545591174] [2021-05-01 06:40:58,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1545591174] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:40:58,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:40:58,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 06:40:58,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227690071] [2021-05-01 06:40:58,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 06:40:58,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:40:58,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 06:40:58,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-05-01 06:40:58,321 INFO L87 Difference]: Start difference. First operand 660 states and 798 transitions. Second operand has 25 states, 24 states have (on average 2.25) internal successors, (54), 23 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) [2021-05-01 06:41:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:00,833 INFO L93 Difference]: Finished difference Result 796 states and 961 transitions. [2021-05-01 06:41:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-01 06:41:00,834 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.25) internal successors, (54), 23 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 [2021-05-01 06:41:00,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:00,836 INFO L225 Difference]: With dead ends: 796 [2021-05-01 06:41:00,836 INFO L226 Difference]: Without dead ends: 794 [2021-05-01 06:41:00,837 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1625.5ms TimeCoverageRelationStatistics Valid=482, Invalid=3940, Unknown=0, NotChecked=0, Total=4422 [2021-05-01 06:41:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-05-01 06:41:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 661. [2021-05-01 06:41:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 629 states have (on average 1.206677265500795) internal successors, (759), 642 states have internal predecessors, (759), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 6 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-01 06:41:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 798 transitions. [2021-05-01 06:41:01,029 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 798 transitions. Word has length 58 [2021-05-01 06:41:01,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:01,029 INFO L480 AbstractCegarLoop]: Abstraction has 661 states and 798 transitions. [2021-05-01 06:41:01,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 2.25) internal successors, (54), 23 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) [2021-05-01 06:41:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 798 transitions. [2021-05-01 06:41:01,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-01 06:41:01,030 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:01,030 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] [2021-05-01 06:41:01,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-01 06:41:01,030 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:01,030 INFO L82 PathProgramCache]: Analyzing trace with hash -441878337, now seen corresponding path program 14 times [2021-05-01 06:41:01,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:01,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434967924] [2021-05-01 06:41:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:01,034 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:01,035 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:01,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:01,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:01,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:01,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:01,097 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-05-01 06:41:01,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:01,103 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-05-01 06:41:01,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:01,110 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-05-01 06:41:01,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:01,117 INFO L142 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-05-01 06:41:01,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:01,131 INFO L142 QuantifierPusher]: treesize reduction 18, result has 14.3 percent of original size [2021-05-01 06:41:01,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:01,137 INFO L142 QuantifierPusher]: treesize reduction 19, result has 26.9 percent of original size [2021-05-01 06:41:01,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:01,140 INFO L142 QuantifierPusher]: treesize reduction 34, result has 39.3 percent of original size [2021-05-01 06:41:01,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:41:01,161 INFO L142 QuantifierPusher]: treesize reduction 38, result has 35.6 percent of original size [2021-05-01 06:41:01,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:01,182 INFO L142 QuantifierPusher]: treesize reduction 38, result has 32.1 percent of original size [2021-05-01 06:41:01,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:41:01,199 INFO L142 QuantifierPusher]: treesize reduction 22, result has 24.1 percent of original size [2021-05-01 06:41:01,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:01,202 INFO L142 QuantifierPusher]: treesize reduction 26, result has 55.9 percent of original size [2021-05-01 06:41:01,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:01,207 INFO L142 QuantifierPusher]: treesize reduction 17, result has 78.2 percent of original size [2021-05-01 06:41:01,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:41:01,232 INFO L142 QuantifierPusher]: treesize reduction 20, result has 74.7 percent of original size [2021-05-01 06:41:01,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:41:01,269 INFO L142 QuantifierPusher]: treesize reduction 84, result has 44.7 percent of original size [2021-05-01 06:41:01,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:41:01,309 INFO L142 QuantifierPusher]: treesize reduction 84, result has 46.8 percent of original size [2021-05-01 06:41:01,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:41:01,358 INFO L142 QuantifierPusher]: treesize reduction 84, result has 50.9 percent of original size [2021-05-01 06:41:01,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:41:01,413 INFO L142 QuantifierPusher]: treesize reduction 49, result has 53.3 percent of original size [2021-05-01 06:41:01,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:41:01,463 INFO L142 QuantifierPusher]: treesize reduction 36, result has 69.7 percent of original size [2021-05-01 06:41:01,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:41:01,526 INFO L142 QuantifierPusher]: treesize reduction 38, result has 67.8 percent of original size [2021-05-01 06:41:01,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 06:41:01,582 INFO L142 QuantifierPusher]: treesize reduction 13, result has 79.7 percent of original size [2021-05-01 06:41:01,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:41:01,614 INFO L142 QuantifierPusher]: treesize reduction 15, result has 76.6 percent of original size [2021-05-01 06:41:01,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:41:01,646 INFO L142 QuantifierPusher]: treesize reduction 46, result has 71.8 percent of original size [2021-05-01 06:41:01,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 06:41:01,709 INFO L142 QuantifierPusher]: treesize reduction 34, result has 64.6 percent of original size [2021-05-01 06:41:01,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:41:01,731 INFO L142 QuantifierPusher]: treesize reduction 33, result has 65.3 percent of original size [2021-05-01 06:41:01,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:41:01,767 INFO L142 QuantifierPusher]: treesize reduction 30, result has 74.4 percent of original size [2021-05-01 06:41:01,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:41:01,808 INFO L142 QuantifierPusher]: treesize reduction 38, result has 66.4 percent of original size [2021-05-01 06:41:01,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:41:01,855 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:41:01,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:41:01,891 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-05-01 06:41:01,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:41:01,923 INFO L142 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-05-01 06:41:01,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:01,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:01,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:01,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:01,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:01,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:01,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:02,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:02,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:02,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:02,011 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:02,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434967924] [2021-05-01 06:41:02,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [434967924] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:02,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:02,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-01 06:41:02,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138180500] [2021-05-01 06:41:02,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-01 06:41:02,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:02,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-01 06:41:02,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2021-05-01 06:41:02,012 INFO L87 Difference]: Start difference. First operand 661 states and 798 transitions. Second operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 29 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) [2021-05-01 06:41:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:04,603 INFO L93 Difference]: Finished difference Result 868 states and 1051 transitions. [2021-05-01 06:41:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-01 06:41:04,605 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 29 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 [2021-05-01 06:41:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:04,607 INFO L225 Difference]: With dead ends: 868 [2021-05-01 06:41:04,607 INFO L226 Difference]: Without dead ends: 866 [2021-05-01 06:41:04,608 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 2201.7ms TimeCoverageRelationStatistics Valid=497, Invalid=4333, Unknown=0, NotChecked=0, Total=4830 [2021-05-01 06:41:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-05-01 06:41:04,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 680. [2021-05-01 06:41:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 645 states have (on average 1.206201550387597) internal successors, (778), 660 states have internal predecessors, (778), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 6 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-01 06:41:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 821 transitions. [2021-05-01 06:41:04,799 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 821 transitions. Word has length 58 [2021-05-01 06:41:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:04,800 INFO L480 AbstractCegarLoop]: Abstraction has 680 states and 821 transitions. [2021-05-01 06:41:04,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 29 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) [2021-05-01 06:41:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 821 transitions. [2021-05-01 06:41:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-01 06:41:04,801 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:04,801 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] [2021-05-01 06:41:04,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-01 06:41:04,801 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:04,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:04,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2022038101, now seen corresponding path program 15 times [2021-05-01 06:41:04,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:04,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195215927] [2021-05-01 06:41:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:04,805 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:04,805 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:04,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:04,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:04,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:04,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:04,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:04,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:04,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:04,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:04,872 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:41:04,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:04,875 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-05-01 06:41:04,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:41:04,889 INFO L142 QuantifierPusher]: treesize reduction 28, result has 64.1 percent of original size [2021-05-01 06:41:04,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:04,908 INFO L142 QuantifierPusher]: treesize reduction 28, result has 69.2 percent of original size [2021-05-01 06:41:04,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:41:04,932 INFO L142 QuantifierPusher]: treesize reduction 12, result has 77.8 percent of original size [2021-05-01 06:41:04,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:41:04,953 INFO L142 QuantifierPusher]: treesize reduction 16, result has 75.8 percent of original size [2021-05-01 06:41:04,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:04,984 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-05-01 06:41:04,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:04,992 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.1 percent of original size [2021-05-01 06:41:04,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:41:05,016 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.0 percent of original size [2021-05-01 06:41:05,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:41:05,036 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.6 percent of original size [2021-05-01 06:41:05,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:41:05,062 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:41:05,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:41:05,063 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:41:05,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:41:05,084 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.3 percent of original size [2021-05-01 06:41:05,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:41:05,108 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:41:05,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:41:05,109 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:41:05,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:41:05,133 INFO L142 QuantifierPusher]: treesize reduction 20, result has 79.4 percent of original size [2021-05-01 06:41:05,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:41:05,160 INFO L142 QuantifierPusher]: treesize reduction 15, result has 83.7 percent of original size [2021-05-01 06:41:05,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:41:05,190 INFO L142 QuantifierPusher]: treesize reduction 13, result has 72.3 percent of original size [2021-05-01 06:41:05,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:05,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:41:05,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:41:05,229 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-05-01 06:41:05,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:41:05,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:05,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:05,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:05,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:05,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:05,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:05,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:05,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:05,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:05,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:05,332 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:05,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195215927] [2021-05-01 06:41:05,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [195215927] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:05,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:05,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 06:41:05,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550681413] [2021-05-01 06:41:05,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 06:41:05,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:05,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 06:41:05,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-05-01 06:41:05,333 INFO L87 Difference]: Start difference. First operand 680 states and 821 transitions. Second operand has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 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) [2021-05-01 06:41:07,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:07,042 INFO L93 Difference]: Finished difference Result 847 states and 1021 transitions. [2021-05-01 06:41:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-01 06:41:07,044 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 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 [2021-05-01 06:41:07,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:07,046 INFO L225 Difference]: With dead ends: 847 [2021-05-01 06:41:07,046 INFO L226 Difference]: Without dead ends: 845 [2021-05-01 06:41:07,047 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 971.0ms TimeCoverageRelationStatistics Valid=240, Invalid=1830, Unknown=0, NotChecked=0, Total=2070 [2021-05-01 06:41:07,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-05-01 06:41:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 671. [2021-05-01 06:41:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 636 states have (on average 1.2044025157232705) internal successors, (766), 651 states have internal predecessors, (766), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 6 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-01 06:41:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 809 transitions. [2021-05-01 06:41:07,246 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 809 transitions. Word has length 58 [2021-05-01 06:41:07,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:07,246 INFO L480 AbstractCegarLoop]: Abstraction has 671 states and 809 transitions. [2021-05-01 06:41:07,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 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) [2021-05-01 06:41:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 809 transitions. [2021-05-01 06:41:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-01 06:41:07,247 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:07,247 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] [2021-05-01 06:41:07,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-01 06:41:07,247 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:07,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1349061435, now seen corresponding path program 6 times [2021-05-01 06:41:07,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:07,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756477257] [2021-05-01 06:41:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:07,256 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:07,257 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:07,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:07,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:07,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:07,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:07,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:07,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:07,318 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:41:07,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:07,329 INFO L142 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-05-01 06:41:07,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:41:07,346 INFO L142 QuantifierPusher]: treesize reduction 28, result has 36.4 percent of original size [2021-05-01 06:41:07,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:07,359 INFO L142 QuantifierPusher]: treesize reduction 33, result has 8.3 percent of original size [2021-05-01 06:41:07,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:07,366 INFO L142 QuantifierPusher]: treesize reduction 34, result has 17.1 percent of original size [2021-05-01 06:41:07,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:07,369 INFO L142 QuantifierPusher]: treesize reduction 43, result has 38.6 percent of original size [2021-05-01 06:41:07,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:07,391 INFO L142 QuantifierPusher]: treesize reduction 43, result has 35.8 percent of original size [2021-05-01 06:41:07,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:07,413 INFO L142 QuantifierPusher]: treesize reduction 45, result has 30.8 percent of original size [2021-05-01 06:41:07,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:07,429 INFO L142 QuantifierPusher]: treesize reduction 39, result has 15.2 percent of original size [2021-05-01 06:41:07,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:07,433 INFO L142 QuantifierPusher]: treesize reduction 41, result has 44.6 percent of original size [2021-05-01 06:41:07,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:07,437 INFO L142 QuantifierPusher]: treesize reduction 46, result has 54.0 percent of original size [2021-05-01 06:41:07,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:07,461 INFO L142 QuantifierPusher]: treesize reduction 46, result has 51.1 percent of original size [2021-05-01 06:41:07,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:07,504 INFO L142 QuantifierPusher]: treesize reduction 46, result has 50.0 percent of original size [2021-05-01 06:41:07,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:41:07,533 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.1 percent of original size [2021-05-01 06:41:07,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:41:07,555 INFO L142 QuantifierPusher]: treesize reduction 37, result has 47.1 percent of original size [2021-05-01 06:41:07,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:07,580 INFO L142 QuantifierPusher]: treesize reduction 55, result has 59.9 percent of original size [2021-05-01 06:41:07,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:41:07,624 INFO L142 QuantifierPusher]: treesize reduction 47, result has 41.3 percent of original size [2021-05-01 06:41:07,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:07,625 INFO L142 QuantifierPusher]: treesize reduction 46, result has 41.8 percent of original size [2021-05-01 06:41:07,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:07,649 INFO L142 QuantifierPusher]: treesize reduction 31, result has 67.7 percent of original size [2021-05-01 06:41:07,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:41:07,680 INFO L142 QuantifierPusher]: treesize reduction 41, result has 61.7 percent of original size [2021-05-01 06:41:07,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:41:07,710 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:41:07,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:41:07,729 INFO L142 QuantifierPusher]: treesize reduction 24, result has 54.7 percent of original size [2021-05-01 06:41:07,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:41:07,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:41:07,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:07,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:07,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:07,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:07,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:07,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:07,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:07,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:07,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:07,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:07,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:07,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:07,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-01 06:41:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:07,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:07,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:07,861 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:07,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756477257] [2021-05-01 06:41:07,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [756477257] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:07,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:07,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-01 06:41:07,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14529924] [2021-05-01 06:41:07,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-01 06:41:07,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-01 06:41:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-05-01 06:41:07,863 INFO L87 Difference]: Start difference. First operand 671 states and 809 transitions. Second operand has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 states have internal predecessors, (54), 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) [2021-05-01 06:41:09,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:09,365 INFO L93 Difference]: Finished difference Result 806 states and 969 transitions. [2021-05-01 06:41:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-01 06:41:09,366 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), 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 [2021-05-01 06:41:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:09,368 INFO L225 Difference]: With dead ends: 806 [2021-05-01 06:41:09,368 INFO L226 Difference]: Without dead ends: 804 [2021-05-01 06:41:09,369 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1003.5ms TimeCoverageRelationStatistics Valid=229, Invalid=1841, Unknown=0, NotChecked=0, Total=2070 [2021-05-01 06:41:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-05-01 06:41:09,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 697. [2021-05-01 06:41:09,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 659 states have (on average 1.2033383915022762) internal successors, (793), 675 states have internal predecessors, (793), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (23), 7 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-01 06:41:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 840 transitions. [2021-05-01 06:41:09,581 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 840 transitions. Word has length 60 [2021-05-01 06:41:09,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:09,582 INFO L480 AbstractCegarLoop]: Abstraction has 697 states and 840 transitions. [2021-05-01 06:41:09,582 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), 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) [2021-05-01 06:41:09,582 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 840 transitions. [2021-05-01 06:41:09,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-01 06:41:09,583 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:09,583 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] [2021-05-01 06:41:09,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-01 06:41:09,583 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:09,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:09,583 INFO L82 PathProgramCache]: Analyzing trace with hash 527024001, now seen corresponding path program 7 times [2021-05-01 06:41:09,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:09,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662541839] [2021-05-01 06:41:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:09,587 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:09,588 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:09,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:09,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:09,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:09,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:09,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:09,650 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:41:09,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:09,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:41:09,662 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-05-01 06:41:09,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:09,664 INFO L142 QuantifierPusher]: treesize reduction 18, result has 53.8 percent of original size [2021-05-01 06:41:09,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:09,680 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-05-01 06:41:09,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:41:09,710 INFO L142 QuantifierPusher]: treesize reduction 20, result has 41.2 percent of original size [2021-05-01 06:41:09,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:41:09,724 INFO L142 QuantifierPusher]: treesize reduction 19, result has 13.6 percent of original size [2021-05-01 06:41:09,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:09,727 INFO L142 QuantifierPusher]: treesize reduction 33, result has 13.2 percent of original size [2021-05-01 06:41:09,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:09,731 INFO L142 QuantifierPusher]: treesize reduction 33, result has 13.2 percent of original size [2021-05-01 06:41:09,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:09,734 INFO L142 QuantifierPusher]: treesize reduction 33, result has 13.2 percent of original size [2021-05-01 06:41:09,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:09,738 INFO L142 QuantifierPusher]: treesize reduction 35, result has 12.5 percent of original size [2021-05-01 06:41:09,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:09,742 INFO L142 QuantifierPusher]: treesize reduction 22, result has 48.8 percent of original size [2021-05-01 06:41:09,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:09,757 INFO L142 QuantifierPusher]: treesize reduction 25, result has 43.2 percent of original size [2021-05-01 06:41:09,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:41:09,774 INFO L142 QuantifierPusher]: treesize reduction 25, result has 56.1 percent of original size [2021-05-01 06:41:09,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:41:09,798 INFO L142 QuantifierPusher]: treesize reduction 25, result has 54.5 percent of original size [2021-05-01 06:41:09,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:41:09,819 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-05-01 06:41:09,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:09,837 INFO L142 QuantifierPusher]: treesize reduction 4, result has 86.2 percent of original size [2021-05-01 06:41:09,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:09,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:41:09,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:41:09,886 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-05-01 06:41:09,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:09,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:09,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:09,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:09,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:09,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:09,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:09,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:09,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:10,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:10,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-01 06:41:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:10,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:10,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:10,002 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:10,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662541839] [2021-05-01 06:41:10,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [662541839] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:10,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:10,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 06:41:10,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059967394] [2021-05-01 06:41:10,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 06:41:10,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:10,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 06:41:10,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2021-05-01 06:41:10,003 INFO L87 Difference]: Start difference. First operand 697 states and 840 transitions. Second operand has 24 states, 23 states have (on average 2.347826086956522) internal successors, (54), 22 states have internal predecessors, (54), 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) [2021-05-01 06:41:11,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:11,421 INFO L93 Difference]: Finished difference Result 826 states and 995 transitions. [2021-05-01 06:41:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-01 06:41:11,422 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), 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 [2021-05-01 06:41:11,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:11,424 INFO L225 Difference]: With dead ends: 826 [2021-05-01 06:41:11,424 INFO L226 Difference]: Without dead ends: 824 [2021-05-01 06:41:11,424 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 773.5ms TimeCoverageRelationStatistics Valid=224, Invalid=1668, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 06:41:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2021-05-01 06:41:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 742. [2021-05-01 06:41:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 702 states have (on average 1.2065527065527066) internal successors, (847), 720 states have internal predecessors, (847), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (25), 7 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-01 06:41:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 898 transitions. [2021-05-01 06:41:11,657 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 898 transitions. Word has length 60 [2021-05-01 06:41:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:11,657 INFO L480 AbstractCegarLoop]: Abstraction has 742 states and 898 transitions. [2021-05-01 06:41:11,657 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), 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) [2021-05-01 06:41:11,658 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 898 transitions. [2021-05-01 06:41:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-01 06:41:11,659 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:11,659 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] [2021-05-01 06:41:11,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-01 06:41:11,659 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:11,659 INFO L82 PathProgramCache]: Analyzing trace with hash 117942087, now seen corresponding path program 8 times [2021-05-01 06:41:11,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:11,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632381819] [2021-05-01 06:41:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:11,673 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:11,674 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:11,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:11,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:11,720 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:41:11,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:11,729 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-05-01 06:41:11,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:11,735 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-05-01 06:41:11,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:11,746 INFO L142 QuantifierPusher]: treesize reduction 16, result has 5.9 percent of original size [2021-05-01 06:41:11,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,746 INFO L142 QuantifierPusher]: treesize reduction 19, result has 13.6 percent of original size [2021-05-01 06:41:11,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:11,749 INFO L142 QuantifierPusher]: treesize reduction 28, result has 31.7 percent of original size [2021-05-01 06:41:11,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:11,761 INFO L142 QuantifierPusher]: treesize reduction 25, result has 57.6 percent of original size [2021-05-01 06:41:11,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:11,784 INFO L142 QuantifierPusher]: treesize reduction 25, result has 67.1 percent of original size [2021-05-01 06:41:11,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:41:11,822 INFO L142 QuantifierPusher]: treesize reduction 22, result has 66.2 percent of original size [2021-05-01 06:41:11,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:41:11,849 INFO L142 QuantifierPusher]: treesize reduction 22, result has 64.5 percent of original size [2021-05-01 06:41:11,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:41:11,875 INFO L142 QuantifierPusher]: treesize reduction 22, result has 62.7 percent of original size [2021-05-01 06:41:11,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:41:11,897 INFO L142 QuantifierPusher]: treesize reduction 17, result has 62.2 percent of original size [2021-05-01 06:41:11,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:11,915 INFO L142 QuantifierPusher]: treesize reduction 19, result has 60.4 percent of original size [2021-05-01 06:41:11,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:41:11,935 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.8 percent of original size [2021-05-01 06:41:11,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:41:11,961 INFO L142 QuantifierPusher]: treesize reduction 5, result has 84.4 percent of original size [2021-05-01 06:41:11,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:11,992 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size [2021-05-01 06:41:11,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:12,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:12,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:12,051 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size [2021-05-01 06:41:12,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:12,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:41:12,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:12,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:12,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:12,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:12,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-01 06:41:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:12,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:12,210 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:12,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632381819] [2021-05-01 06:41:12,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1632381819] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:12,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:12,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:41:12,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369827333] [2021-05-01 06:41:12,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:41:12,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:12,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:41:12,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:41:12,211 INFO L87 Difference]: Start difference. First operand 742 states and 898 transitions. Second operand has 26 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 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) [2021-05-01 06:41:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:14,046 INFO L93 Difference]: Finished difference Result 833 states and 1004 transitions. [2021-05-01 06:41:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-01 06:41:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 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 [2021-05-01 06:41:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:14,049 INFO L225 Difference]: With dead ends: 833 [2021-05-01 06:41:14,049 INFO L226 Difference]: Without dead ends: 831 [2021-05-01 06:41:14,049 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1105.6ms TimeCoverageRelationStatistics Valid=288, Invalid=2262, Unknown=0, NotChecked=0, Total=2550 [2021-05-01 06:41:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-05-01 06:41:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 717. [2021-05-01 06:41:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 680 states have (on average 1.2088235294117646) internal successors, (822), 696 states have internal predecessors, (822), 24 states have call successors, (24), 13 states have call predecessors, (24), 12 states have return successors, (23), 7 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-01 06:41:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 869 transitions. [2021-05-01 06:41:14,269 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 869 transitions. Word has length 60 [2021-05-01 06:41:14,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:14,269 INFO L480 AbstractCegarLoop]: Abstraction has 717 states and 869 transitions. [2021-05-01 06:41:14,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 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) [2021-05-01 06:41:14,269 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 869 transitions. [2021-05-01 06:41:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-01 06:41:14,270 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:14,270 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] [2021-05-01 06:41:14,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-01 06:41:14,270 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:14,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:14,271 INFO L82 PathProgramCache]: Analyzing trace with hash 470069801, now seen corresponding path program 5 times [2021-05-01 06:41:14,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:14,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519147360] [2021-05-01 06:41:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:14,280 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:14,281 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:14,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:14,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:14,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:14,346 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:41:14,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:14,360 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:41:14,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:14,364 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-05-01 06:41:14,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:14,379 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-05-01 06:41:14,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:14,384 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:41:14,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:14,396 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 06:41:14,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:41:14,414 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-05-01 06:41:14,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:14,419 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:41:14,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:14,422 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-05-01 06:41:14,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:14,426 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-05-01 06:41:14,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:14,430 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-05-01 06:41:14,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:14,434 INFO L142 QuantifierPusher]: treesize reduction 24, result has 56.4 percent of original size [2021-05-01 06:41:14,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:41:14,438 INFO L142 QuantifierPusher]: treesize reduction 27, result has 51.8 percent of original size [2021-05-01 06:41:14,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:41:14,455 INFO L142 QuantifierPusher]: treesize reduction 56, result has 45.6 percent of original size [2021-05-01 06:41:14,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:41:14,490 INFO L142 QuantifierPusher]: treesize reduction 48, result has 59.3 percent of original size [2021-05-01 06:41:14,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:41:14,533 INFO L142 QuantifierPusher]: treesize reduction 48, result has 62.8 percent of original size [2021-05-01 06:41:14,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 06:41:14,571 INFO L142 QuantifierPusher]: treesize reduction 48, result has 62.2 percent of original size [2021-05-01 06:41:14,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:41:14,606 INFO L142 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-05-01 06:41:14,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:14,625 INFO L142 QuantifierPusher]: treesize reduction 30, result has 48.3 percent of original size [2021-05-01 06:41:14,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:14,644 INFO L142 QuantifierPusher]: treesize reduction 37, result has 65.1 percent of original size [2021-05-01 06:41:14,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:41:14,670 INFO L142 QuantifierPusher]: treesize reduction 29, result has 64.2 percent of original size [2021-05-01 06:41:14,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:14,695 INFO L142 QuantifierPusher]: treesize reduction 20, result has 77.3 percent of original size [2021-05-01 06:41:14,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:41:14,723 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.7 percent of original size [2021-05-01 06:41:14,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:41:14,740 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.0 percent of original size [2021-05-01 06:41:14,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:41:14,760 INFO L142 QuantifierPusher]: treesize reduction 44, result has 58.5 percent of original size [2021-05-01 06:41:14,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:41:14,795 INFO L142 QuantifierPusher]: treesize reduction 32, result has 72.9 percent of original size [2021-05-01 06:41:14,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:41:14,846 INFO L142 QuantifierPusher]: treesize reduction 34, result has 70.9 percent of original size [2021-05-01 06:41:14,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:41:14,892 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:41:14,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:41:14,912 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-05-01 06:41:14,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:41:14,935 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:41:14,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:14,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:14,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:14,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:14,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:15,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:15,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:15,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-01 06:41:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:15,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:15,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:15,049 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:15,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519147360] [2021-05-01 06:41:15,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [519147360] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:15,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:15,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-01 06:41:15,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982960113] [2021-05-01 06:41:15,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-01 06:41:15,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:15,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-01 06:41:15,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-05-01 06:41:15,050 INFO L87 Difference]: Start difference. First operand 717 states and 869 transitions. Second operand has 27 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 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) [2021-05-01 06:41:17,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:17,344 INFO L93 Difference]: Finished difference Result 892 states and 1081 transitions. [2021-05-01 06:41:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-01 06:41:17,344 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 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 [2021-05-01 06:41:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:17,347 INFO L225 Difference]: With dead ends: 892 [2021-05-01 06:41:17,347 INFO L226 Difference]: Without dead ends: 890 [2021-05-01 06:41:17,347 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 6 SyntacticMatches, 10 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 1613.4ms TimeCoverageRelationStatistics Valid=459, Invalid=3447, Unknown=0, NotChecked=0, Total=3906 [2021-05-01 06:41:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-05-01 06:41:17,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 747. [2021-05-01 06:41:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 709 states have (on average 1.2073342736248236) internal successors, (856), 726 states have internal predecessors, (856), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 7 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-01 06:41:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 905 transitions. [2021-05-01 06:41:17,587 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 905 transitions. Word has length 61 [2021-05-01 06:41:17,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:17,588 INFO L480 AbstractCegarLoop]: Abstraction has 747 states and 905 transitions. [2021-05-01 06:41:17,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 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) [2021-05-01 06:41:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 905 transitions. [2021-05-01 06:41:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-01 06:41:17,589 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:17,589 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] [2021-05-01 06:41:17,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-01 06:41:17,589 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:17,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:17,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1495534305, now seen corresponding path program 6 times [2021-05-01 06:41:17,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:17,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062638085] [2021-05-01 06:41:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:17,599 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:17,600 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:17,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:17,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:17,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:17,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:17,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:17,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:17,659 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:41:17,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:17,670 INFO L142 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-05-01 06:41:17,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:17,674 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-05-01 06:41:17,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:17,677 INFO L142 QuantifierPusher]: treesize reduction 39, result has 29.1 percent of original size [2021-05-01 06:41:17,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:17,686 INFO L142 QuantifierPusher]: treesize reduction 33, result has 45.9 percent of original size [2021-05-01 06:41:17,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:17,692 INFO L142 QuantifierPusher]: treesize reduction 31, result has 58.1 percent of original size [2021-05-01 06:41:17,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:41:17,718 INFO L142 QuantifierPusher]: treesize reduction 43, result has 52.7 percent of original size [2021-05-01 06:41:17,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:17,746 INFO L142 QuantifierPusher]: treesize reduction 57, result has 49.6 percent of original size [2021-05-01 06:41:17,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:41:17,785 INFO L142 QuantifierPusher]: treesize reduction 57, result has 48.2 percent of original size [2021-05-01 06:41:17,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:41:17,820 INFO L142 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-05-01 06:41:17,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:17,846 INFO L142 QuantifierPusher]: treesize reduction 41, result has 54.9 percent of original size [2021-05-01 06:41:17,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:17,872 INFO L142 QuantifierPusher]: treesize reduction 32, result has 70.4 percent of original size [2021-05-01 06:41:17,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:41:17,905 INFO L142 QuantifierPusher]: treesize reduction 31, result has 61.7 percent of original size [2021-05-01 06:41:17,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:17,906 INFO L142 QuantifierPusher]: treesize reduction 32, result has 61.0 percent of original size [2021-05-01 06:41:17,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:17,933 INFO L142 QuantifierPusher]: treesize reduction 28, result has 74.5 percent of original size [2021-05-01 06:41:17,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:41:17,967 INFO L142 QuantifierPusher]: treesize reduction 39, result has 57.1 percent of original size [2021-05-01 06:41:17,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:18,001 INFO L142 QuantifierPusher]: treesize reduction 31, result has 69.9 percent of original size [2021-05-01 06:41:18,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:41:18,036 INFO L142 QuantifierPusher]: treesize reduction 40, result has 66.9 percent of original size [2021-05-01 06:41:18,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 06:41:18,071 INFO L142 QuantifierPusher]: treesize reduction 40, result has 66.1 percent of original size [2021-05-01 06:41:18,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 06:41:18,104 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-05-01 06:41:18,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:18,125 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-05-01 06:41:18,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:41:18,147 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-05-01 06:41:18,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:41:18,167 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 06:41:18,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:18,187 INFO L142 QuantifierPusher]: treesize reduction 11, result has 68.6 percent of original size [2021-05-01 06:41:18,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:18,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-05-01 06:41:18,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:18,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:18,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:18,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:18,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:18,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:18,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:18,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:18,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:18,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:18,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:18,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:18,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-01 06:41:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:18,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:18,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:18,325 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:18,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062638085] [2021-05-01 06:41:18,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1062638085] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:18,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:18,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 06:41:18,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005855014] [2021-05-01 06:41:18,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 06:41:18,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:18,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 06:41:18,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2021-05-01 06:41:18,327 INFO L87 Difference]: Start difference. First operand 747 states and 905 transitions. Second operand has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 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) [2021-05-01 06:41:21,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:21,263 INFO L93 Difference]: Finished difference Result 895 states and 1081 transitions. [2021-05-01 06:41:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-01 06:41:21,264 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 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 [2021-05-01 06:41:21,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:21,267 INFO L225 Difference]: With dead ends: 895 [2021-05-01 06:41:21,268 INFO L226 Difference]: Without dead ends: 893 [2021-05-01 06:41:21,268 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 2062.1ms TimeCoverageRelationStatistics Valid=624, Invalid=3666, Unknown=0, NotChecked=0, Total=4290 [2021-05-01 06:41:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-05-01 06:41:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 762. [2021-05-01 06:41:21,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 724 states have (on average 1.207182320441989) internal successors, (874), 741 states have internal predecessors, (874), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 7 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-01 06:41:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 923 transitions. [2021-05-01 06:41:21,551 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 923 transitions. Word has length 61 [2021-05-01 06:41:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:21,551 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 923 transitions. [2021-05-01 06:41:21,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 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) [2021-05-01 06:41:21,551 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 923 transitions. [2021-05-01 06:41:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-01 06:41:21,565 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:21,565 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:21,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-01 06:41:21,565 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:21,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1930573552, now seen corresponding path program 16 times [2021-05-01 06:41:21,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:21,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45913113] [2021-05-01 06:41:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:21,585 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:21,586 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:21,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:21,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:21,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:21,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:21,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:21,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:21,721 INFO L142 QuantifierPusher]: treesize reduction 29, result has 25.6 percent of original size [2021-05-01 06:41:21,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:21,728 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-05-01 06:41:21,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:21,753 INFO L142 QuantifierPusher]: treesize reduction 52, result has 31.6 percent of original size [2021-05-01 06:41:21,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:21,768 INFO L142 QuantifierPusher]: treesize reduction 66, result has 19.5 percent of original size [2021-05-01 06:41:21,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:21,785 INFO L142 QuantifierPusher]: treesize reduction 54, result has 5.3 percent of original size [2021-05-01 06:41:21,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:21,794 INFO L142 QuantifierPusher]: treesize reduction 67, result has 15.2 percent of original size [2021-05-01 06:41:21,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:41:21,800 INFO L142 QuantifierPusher]: treesize reduction 101, result has 42.0 percent of original size [2021-05-01 06:41:21,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:41:21,843 INFO L142 QuantifierPusher]: treesize reduction 93, result has 50.8 percent of original size [2021-05-01 06:41:21,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 06:41:21,898 INFO L142 QuantifierPusher]: treesize reduction 93, result has 53.5 percent of original size [2021-05-01 06:41:21,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-01 06:41:21,983 INFO L142 QuantifierPusher]: treesize reduction 93, result has 53.0 percent of original size [2021-05-01 06:41:21,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-05-01 06:41:22,045 INFO L142 QuantifierPusher]: treesize reduction 101, result has 35.3 percent of original size [2021-05-01 06:41:22,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:41:22,089 INFO L142 QuantifierPusher]: treesize reduction 72, result has 59.3 percent of original size [2021-05-01 06:41:22,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-05-01 06:41:22,148 INFO L142 QuantifierPusher]: treesize reduction 52, result has 72.5 percent of original size [2021-05-01 06:41:22,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-05-01 06:41:22,212 INFO L142 QuantifierPusher]: treesize reduction 36, result has 75.8 percent of original size [2021-05-01 06:41:22,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-05-01 06:41:22,248 INFO L142 QuantifierPusher]: treesize reduction 32, result has 64.0 percent of original size [2021-05-01 06:41:22,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:41:22,262 INFO L142 QuantifierPusher]: treesize reduction 34, result has 61.8 percent of original size [2021-05-01 06:41:22,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:41:22,294 INFO L142 QuantifierPusher]: treesize reduction 48, result has 67.1 percent of original size [2021-05-01 06:41:22,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-05-01 06:41:22,379 INFO L142 QuantifierPusher]: treesize reduction 34, result has 59.0 percent of original size [2021-05-01 06:41:22,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:41:22,416 INFO L142 QuantifierPusher]: treesize reduction 35, result has 56.8 percent of original size [2021-05-01 06:41:22,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:41:22,472 INFO L142 QuantifierPusher]: treesize reduction 35, result has 63.9 percent of original size [2021-05-01 06:41:22,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:41:22,553 INFO L142 QuantifierPusher]: treesize reduction 35, result has 56.8 percent of original size [2021-05-01 06:41:22,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:41:22,555 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-05-01 06:41:22,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:41:22,603 INFO L142 QuantifierPusher]: treesize reduction 24, result has 72.4 percent of original size [2021-05-01 06:41:22,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:41:22,647 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:41:22,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:22,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:41:22,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:22,729 INFO L142 QuantifierPusher]: treesize reduction 19, result has 65.5 percent of original size [2021-05-01 06:41:22,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:41:22,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:22,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:22,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:22,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:22,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:22,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:22,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:22,853 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:22,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45913113] [2021-05-01 06:41:22,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [45913113] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:22,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:22,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 06:41:22,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660237823] [2021-05-01 06:41:22,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 06:41:22,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:22,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 06:41:22,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2021-05-01 06:41:22,854 INFO L87 Difference]: Start difference. First operand 762 states and 923 transitions. Second operand has 30 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 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) [2021-05-01 06:41:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:26,912 INFO L93 Difference]: Finished difference Result 1175 states and 1434 transitions. [2021-05-01 06:41:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-01 06:41:26,913 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 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 60 [2021-05-01 06:41:26,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:26,916 INFO L225 Difference]: With dead ends: 1175 [2021-05-01 06:41:26,916 INFO L226 Difference]: Without dead ends: 1173 [2021-05-01 06:41:26,917 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 3118.3ms TimeCoverageRelationStatistics Valid=756, Invalid=3936, Unknown=0, NotChecked=0, Total=4692 [2021-05-01 06:41:26,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-05-01 06:41:27,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 807. [2021-05-01 06:41:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 765 states have (on average 1.2078431372549019) internal successors, (924), 784 states have internal predecessors, (924), 27 states have call successors, (27), 15 states have call predecessors, (27), 14 states have return successors, (26), 7 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-01 06:41:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 977 transitions. [2021-05-01 06:41:27,177 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 977 transitions. Word has length 60 [2021-05-01 06:41:27,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:27,177 INFO L480 AbstractCegarLoop]: Abstraction has 807 states and 977 transitions. [2021-05-01 06:41:27,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 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) [2021-05-01 06:41:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 977 transitions. [2021-05-01 06:41:27,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-01 06:41:27,178 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:27,178 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] [2021-05-01 06:41:27,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-01 06:41:27,178 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:27,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:27,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1750933991, now seen corresponding path program 9 times [2021-05-01 06:41:27,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:27,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294036937] [2021-05-01 06:41:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:27,182 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:27,183 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:27,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:27,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:27,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:27,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:27,242 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:41:27,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:27,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:27,255 INFO L142 QuantifierPusher]: treesize reduction 32, result has 62.4 percent of original size [2021-05-01 06:41:27,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:41:27,277 INFO L142 QuantifierPusher]: treesize reduction 21, result has 72.0 percent of original size [2021-05-01 06:41:27,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:27,285 INFO L142 QuantifierPusher]: treesize reduction 16, result has 55.6 percent of original size [2021-05-01 06:41:27,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:27,297 INFO L142 QuantifierPusher]: treesize reduction 30, result has 48.3 percent of original size [2021-05-01 06:41:27,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:27,303 INFO L142 QuantifierPusher]: treesize reduction 77, result has 45.8 percent of original size [2021-05-01 06:41:27,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:41:27,326 INFO L142 QuantifierPusher]: treesize reduction 44, result has 53.2 percent of original size [2021-05-01 06:41:27,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:27,332 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-05-01 06:41:27,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:27,338 INFO L142 QuantifierPusher]: treesize reduction 43, result has 52.7 percent of original size [2021-05-01 06:41:27,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:27,364 INFO L142 QuantifierPusher]: treesize reduction 43, result has 59.0 percent of original size [2021-05-01 06:41:27,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:41:27,401 INFO L142 QuantifierPusher]: treesize reduction 43, result has 57.8 percent of original size [2021-05-01 06:41:27,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:41:27,432 INFO L142 QuantifierPusher]: treesize reduction 28, result has 64.6 percent of original size [2021-05-01 06:41:27,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:41:27,459 INFO L142 QuantifierPusher]: treesize reduction 31, result has 62.7 percent of original size [2021-05-01 06:41:27,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:27,487 INFO L142 QuantifierPusher]: treesize reduction 69, result has 55.5 percent of original size [2021-05-01 06:41:27,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:41:27,531 INFO L142 QuantifierPusher]: treesize reduction 28, result has 63.2 percent of original size [2021-05-01 06:41:27,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:27,558 INFO L142 QuantifierPusher]: treesize reduction 28, result has 63.2 percent of original size [2021-05-01 06:41:27,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:27,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:41:27,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:27,579 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:41:27,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:27,597 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 06:41:27,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:27,617 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-05-01 06:41:27,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:27,641 INFO L142 QuantifierPusher]: treesize reduction 26, result has 68.3 percent of original size [2021-05-01 06:41:27,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:41:27,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:27,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:27,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:27,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:27,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:27,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-01 06:41:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:27,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-05-01 06:41:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:27,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:27,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:27,757 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:27,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294036937] [2021-05-01 06:41:27,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [294036937] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:27,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:27,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 06:41:27,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554510489] [2021-05-01 06:41:27,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 06:41:27,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:27,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 06:41:27,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-05-01 06:41:27,758 INFO L87 Difference]: Start difference. First operand 807 states and 977 transitions. Second operand has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 22 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) [2021-05-01 06:41:29,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:29,164 INFO L93 Difference]: Finished difference Result 914 states and 1107 transitions. [2021-05-01 06:41:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-01 06:41:29,164 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), 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 [2021-05-01 06:41:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:29,167 INFO L225 Difference]: With dead ends: 914 [2021-05-01 06:41:29,167 INFO L226 Difference]: Without dead ends: 912 [2021-05-01 06:41:29,167 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 808.5ms TimeCoverageRelationStatistics Valid=174, Invalid=1308, Unknown=0, NotChecked=0, Total=1482 [2021-05-01 06:41:29,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-05-01 06:41:29,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 849. [2021-05-01 06:41:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 804 states have (on average 1.2077114427860696) internal successors, (971), 824 states have internal predecessors, (971), 30 states have call successors, (30), 15 states have call predecessors, (30), 14 states have return successors, (29), 9 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-01 06:41:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1030 transitions. [2021-05-01 06:41:29,453 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1030 transitions. Word has length 63 [2021-05-01 06:41:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:29,453 INFO L480 AbstractCegarLoop]: Abstraction has 849 states and 1030 transitions. [2021-05-01 06:41:29,453 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), 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) [2021-05-01 06:41:29,454 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1030 transitions. [2021-05-01 06:41:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-01 06:41:29,454 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:29,455 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] [2021-05-01 06:41:29,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-01 06:41:29,455 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:29,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:29,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1961217892, now seen corresponding path program 17 times [2021-05-01 06:41:29,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:29,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119795187] [2021-05-01 06:41:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:29,459 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:29,460 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:29,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:29,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:29,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:29,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:29,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:29,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:29,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:29,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:29,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:29,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:29,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-05-01 06:41:29,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:29,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:29,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:29,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:29,558 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:29,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119795187] [2021-05-01 06:41:29,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1119795187] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:29,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:29,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-01 06:41:29,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072563477] [2021-05-01 06:41:29,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 06:41:29,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:29,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 06:41:29,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-05-01 06:41:29,559 INFO L87 Difference]: Start difference. First operand 849 states and 1030 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 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) [2021-05-01 06:41:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:30,449 INFO L93 Difference]: Finished difference Result 1070 states and 1305 transitions. [2021-05-01 06:41:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-01 06:41:30,450 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 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 [2021-05-01 06:41:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:30,453 INFO L225 Difference]: With dead ends: 1070 [2021-05-01 06:41:30,453 INFO L226 Difference]: Without dead ends: 1037 [2021-05-01 06:41:30,453 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 228.1ms TimeCoverageRelationStatistics Valid=327, Invalid=665, Unknown=0, NotChecked=0, Total=992 [2021-05-01 06:41:30,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-05-01 06:41:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 850. [2021-05-01 06:41:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 805 states have (on average 1.204968944099379) internal successors, (970), 825 states have internal predecessors, (970), 30 states have call successors, (30), 15 states have call predecessors, (30), 14 states have return successors, (29), 9 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-01 06:41:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1029 transitions. [2021-05-01 06:41:30,743 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1029 transitions. Word has length 61 [2021-05-01 06:41:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:30,743 INFO L480 AbstractCegarLoop]: Abstraction has 850 states and 1029 transitions. [2021-05-01 06:41:30,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 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) [2021-05-01 06:41:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1029 transitions. [2021-05-01 06:41:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-01 06:41:30,745 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:30,745 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] [2021-05-01 06:41:30,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-01 06:41:30,745 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:30,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1632684826, now seen corresponding path program 16 times [2021-05-01 06:41:30,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:30,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898219666] [2021-05-01 06:41:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:30,749 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:30,750 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:30,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:30,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:30,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:30,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:30,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:30,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:30,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:30,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:30,795 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:41:30,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:30,798 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-05-01 06:41:30,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:30,804 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-05-01 06:41:30,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:30,811 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-05-01 06:41:30,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:30,818 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-05-01 06:41:30,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:30,827 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-05-01 06:41:30,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:30,849 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-05-01 06:41:30,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:30,858 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-05-01 06:41:30,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:30,876 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-05-01 06:41:30,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:41:30,885 INFO L142 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-05-01 06:41:30,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:30,915 INFO L142 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-05-01 06:41:30,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:41:30,943 INFO L142 QuantifierPusher]: treesize reduction 19, result has 76.5 percent of original size [2021-05-01 06:41:30,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:41:30,986 INFO L142 QuantifierPusher]: treesize reduction 19, result has 76.3 percent of original size [2021-05-01 06:41:30,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:41:31,025 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:41:31,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:41:31,044 INFO L142 QuantifierPusher]: treesize reduction 41, result has 48.1 percent of original size [2021-05-01 06:41:31,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:41:31,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:31,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:31,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:31,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:31,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:31,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:31,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:31,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:31,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:31,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:31,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:31,138 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:31,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898219666] [2021-05-01 06:41:31,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1898219666] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:31,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:31,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-01 06:41:31,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406557995] [2021-05-01 06:41:31,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-01 06:41:31,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:31,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-01 06:41:31,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-05-01 06:41:31,139 INFO L87 Difference]: Start difference. First operand 850 states and 1029 transitions. Second operand has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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) [2021-05-01 06:41:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:34,345 INFO L93 Difference]: Finished difference Result 1231 states and 1496 transitions. [2021-05-01 06:41:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-01 06:41:34,346 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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 [2021-05-01 06:41:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:34,350 INFO L225 Difference]: With dead ends: 1231 [2021-05-01 06:41:34,350 INFO L226 Difference]: Without dead ends: 1229 [2021-05-01 06:41:34,350 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 1305.2ms TimeCoverageRelationStatistics Valid=490, Invalid=5362, Unknown=0, NotChecked=0, Total=5852 [2021-05-01 06:41:34,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-05-01 06:41:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 897. [2021-05-01 06:41:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 849 states have (on average 1.2061248527679622) internal successors, (1024), 871 states have internal predecessors, (1024), 32 states have call successors, (32), 16 states have call predecessors, (32), 15 states have return successors, (31), 9 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-01 06:41:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1087 transitions. [2021-05-01 06:41:34,665 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1087 transitions. Word has length 61 [2021-05-01 06:41:34,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:34,665 INFO L480 AbstractCegarLoop]: Abstraction has 897 states and 1087 transitions. [2021-05-01 06:41:34,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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) [2021-05-01 06:41:34,665 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1087 transitions. [2021-05-01 06:41:34,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-01 06:41:34,666 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:34,666 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] [2021-05-01 06:41:34,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-01 06:41:34,666 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:34,666 INFO L82 PathProgramCache]: Analyzing trace with hash -171237983, now seen corresponding path program 5 times [2021-05-01 06:41:34,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:34,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231193115] [2021-05-01 06:41:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:34,675 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:34,676 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:34,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:34,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:34,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:34,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:34,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:34,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:34,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:34,729 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-05-01 06:41:34,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:34,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:41:34,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:41:34,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:34,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:34,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:34,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:34,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-01 06:41:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:34,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:34,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-05-01 06:41:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:34,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-05-01 06:41:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:34,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:34,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:34,824 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:34,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231193115] [2021-05-01 06:41:34,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [231193115] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:34,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:34,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-01 06:41:34,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848398669] [2021-05-01 06:41:34,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 06:41:34,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:34,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 06:41:34,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-05-01 06:41:34,825 INFO L87 Difference]: Start difference. First operand 897 states and 1087 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) [2021-05-01 06:41:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:35,595 INFO L93 Difference]: Finished difference Result 954 states and 1153 transitions. [2021-05-01 06:41:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-01 06:41:35,595 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 [2021-05-01 06:41:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:35,597 INFO L225 Difference]: With dead ends: 954 [2021-05-01 06:41:35,597 INFO L226 Difference]: Without dead ends: 871 [2021-05-01 06:41:35,598 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 225.5ms TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-05-01 06:41:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-05-01 06:41:35,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 821. [2021-05-01 06:41:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 783 states have (on average 1.1826309067688379) internal successors, (926), 797 states have internal predecessors, (926), 26 states have call successors, (26), 12 states have call predecessors, (26), 11 states have return successors, (24), 11 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-01 06:41:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 976 transitions. [2021-05-01 06:41:35,887 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 976 transitions. Word has length 65 [2021-05-01 06:41:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:35,887 INFO L480 AbstractCegarLoop]: Abstraction has 821 states and 976 transitions. [2021-05-01 06:41:35,888 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) [2021-05-01 06:41:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 976 transitions. [2021-05-01 06:41:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-01 06:41:35,889 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:35,889 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] [2021-05-01 06:41:35,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-01 06:41:35,889 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:35,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:35,889 INFO L82 PathProgramCache]: Analyzing trace with hash 972338910, now seen corresponding path program 10 times [2021-05-01 06:41:35,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:35,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686268840] [2021-05-01 06:41:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:35,895 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:35,896 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:35,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:35,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:35,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:35,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:35,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:35,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:35,951 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:41:35,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:35,961 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-05-01 06:41:35,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:35,969 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-05-01 06:41:35,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:35,982 INFO L142 QuantifierPusher]: treesize reduction 16, result has 5.9 percent of original size [2021-05-01 06:41:35,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:35,983 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 06:41:35,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:35,987 INFO L142 QuantifierPusher]: treesize reduction 72, result has 33.3 percent of original size [2021-05-01 06:41:35,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:41:36,005 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 06:41:36,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:36,009 INFO L142 QuantifierPusher]: treesize reduction 46, result has 16.4 percent of original size [2021-05-01 06:41:36,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:36,014 INFO L142 QuantifierPusher]: treesize reduction 41, result has 40.6 percent of original size [2021-05-01 06:41:36,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:36,033 INFO L142 QuantifierPusher]: treesize reduction 44, result has 38.0 percent of original size [2021-05-01 06:41:36,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:36,039 INFO L142 QuantifierPusher]: treesize reduction 46, result has 37.0 percent of original size [2021-05-01 06:41:36,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:36,046 INFO L142 QuantifierPusher]: treesize reduction 46, result has 48.3 percent of original size [2021-05-01 06:41:36,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:41:36,053 INFO L142 QuantifierPusher]: treesize reduction 46, result has 37.0 percent of original size [2021-05-01 06:41:36,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:36,059 INFO L142 QuantifierPusher]: treesize reduction 44, result has 38.0 percent of original size [2021-05-01 06:41:36,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:36,067 INFO L142 QuantifierPusher]: treesize reduction 21, result has 73.8 percent of original size [2021-05-01 06:41:36,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:41:36,082 INFO L142 QuantifierPusher]: treesize reduction 14, result has 80.8 percent of original size [2021-05-01 06:41:36,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:41:36,099 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size [2021-05-01 06:41:36,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:41:36,116 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-05-01 06:41:36,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:36,136 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 06:41:36,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:36,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:36,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:41:36,168 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.5 percent of original size [2021-05-01 06:41:36,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:41:36,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:36,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:36,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:36,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:36,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:36,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:36,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:36,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:36,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:36,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:36,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:36,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:36,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-05-01 06:41:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:36,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:36,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:36,287 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:36,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686268840] [2021-05-01 06:41:36,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [686268840] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:36,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:36,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 06:41:36,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715762656] [2021-05-01 06:41:36,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 06:41:36,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:36,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 06:41:36,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:41:36,288 INFO L87 Difference]: Start difference. First operand 821 states and 976 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) [2021-05-01 06:41:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:38,288 INFO L93 Difference]: Finished difference Result 1127 states and 1350 transitions. [2021-05-01 06:41:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-01 06:41:38,289 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 [2021-05-01 06:41:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:38,292 INFO L225 Difference]: With dead ends: 1127 [2021-05-01 06:41:38,292 INFO L226 Difference]: Without dead ends: 1125 [2021-05-01 06:41:38,293 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 6 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 938.1ms TimeCoverageRelationStatistics Valid=313, Invalid=3227, Unknown=0, NotChecked=0, Total=3540 [2021-05-01 06:41:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-05-01 06:41:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 889. [2021-05-01 06:41:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 844 states have (on average 1.1812796208530805) internal successors, (997), 863 states have internal predecessors, (997), 32 states have call successors, (32), 13 states have call predecessors, (32), 12 states have return successors, (30), 12 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-01 06:41:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1059 transitions. [2021-05-01 06:41:38,629 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1059 transitions. Word has length 63 [2021-05-01 06:41:38,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:38,629 INFO L480 AbstractCegarLoop]: Abstraction has 889 states and 1059 transitions. [2021-05-01 06:41:38,629 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) [2021-05-01 06:41:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1059 transitions. [2021-05-01 06:41:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-01 06:41:38,630 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:38,630 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] [2021-05-01 06:41:38,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-01 06:41:38,630 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:38,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:38,630 INFO L82 PathProgramCache]: Analyzing trace with hash 736626974, now seen corresponding path program 11 times [2021-05-01 06:41:38,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:38,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846024310] [2021-05-01 06:41:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:38,654 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:38,655 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:38,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:38,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:38,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:38,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:38,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:38,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:38,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:38,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:38,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:38,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:38,722 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:41:38,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:38,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:38,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:41:38,734 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-05-01 06:41:38,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:38,738 INFO L142 QuantifierPusher]: treesize reduction 42, result has 33.3 percent of original size [2021-05-01 06:41:38,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:38,756 INFO L142 QuantifierPusher]: treesize reduction 42, result has 30.0 percent of original size [2021-05-01 06:41:38,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:41:38,777 INFO L142 QuantifierPusher]: treesize reduction 44, result has 24.1 percent of original size [2021-05-01 06:41:38,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:41:38,793 INFO L142 QuantifierPusher]: treesize reduction 43, result has 6.5 percent of original size [2021-05-01 06:41:38,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:38,797 INFO L142 QuantifierPusher]: treesize reduction 60, result has 7.7 percent of original size [2021-05-01 06:41:38,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:38,801 INFO L142 QuantifierPusher]: treesize reduction 60, result has 7.7 percent of original size [2021-05-01 06:41:38,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:38,806 INFO L142 QuantifierPusher]: treesize reduction 60, result has 7.7 percent of original size [2021-05-01 06:41:38,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:38,810 INFO L142 QuantifierPusher]: treesize reduction 63, result has 7.4 percent of original size [2021-05-01 06:41:38,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:38,815 INFO L142 QuantifierPusher]: treesize reduction 34, result has 43.3 percent of original size [2021-05-01 06:41:38,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:38,830 INFO L142 QuantifierPusher]: treesize reduction 36, result has 40.0 percent of original size [2021-05-01 06:41:38,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:38,845 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.6 percent of original size [2021-05-01 06:41:38,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:41:38,867 INFO L142 QuantifierPusher]: treesize reduction 16, result has 70.9 percent of original size [2021-05-01 06:41:38,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:41:38,890 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-05-01 06:41:38,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:41:38,910 INFO L142 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-05-01 06:41:38,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:41:38,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:38,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:38,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:38,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:38,971 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-05-01 06:41:38,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:38,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:38,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:41:39,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:39,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:39,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:39,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:39,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:39,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:39,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:39,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:39,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:39,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:39,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-05-01 06:41:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:39,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:39,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:39,119 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:39,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846024310] [2021-05-01 06:41:39,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [846024310] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:39,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:39,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 06:41:39,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630087984] [2021-05-01 06:41:39,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 06:41:39,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:39,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 06:41:39,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-05-01 06:41:39,120 INFO L87 Difference]: Start difference. First operand 889 states and 1059 transitions. Second operand has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 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) [2021-05-01 06:41:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:42,107 INFO L93 Difference]: Finished difference Result 1052 states and 1254 transitions. [2021-05-01 06:41:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-01 06:41:42,109 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 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 [2021-05-01 06:41:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:42,120 INFO L225 Difference]: With dead ends: 1052 [2021-05-01 06:41:42,120 INFO L226 Difference]: Without dead ends: 1050 [2021-05-01 06:41:42,120 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 1674.5ms TimeCoverageRelationStatistics Valid=390, Invalid=3642, Unknown=0, NotChecked=0, Total=4032 [2021-05-01 06:41:42,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-05-01 06:41:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 910. [2021-05-01 06:41:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 861 states have (on average 1.1800232288037167) internal successors, (1016), 881 states have internal predecessors, (1016), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (32), 13 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-01 06:41:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1082 transitions. [2021-05-01 06:41:42,475 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1082 transitions. Word has length 63 [2021-05-01 06:41:42,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:42,475 INFO L480 AbstractCegarLoop]: Abstraction has 910 states and 1082 transitions. [2021-05-01 06:41:42,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 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) [2021-05-01 06:41:42,475 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1082 transitions. [2021-05-01 06:41:42,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-01 06:41:42,476 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:42,476 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] [2021-05-01 06:41:42,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-01 06:41:42,476 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:42,476 INFO L82 PathProgramCache]: Analyzing trace with hash -578416814, now seen corresponding path program 12 times [2021-05-01 06:41:42,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:42,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952743652] [2021-05-01 06:41:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:42,481 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:42,483 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:42,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:42,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:42,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:42,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:42,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:42,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:42,541 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:41:42,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:42,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:42,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:41:42,552 INFO L142 QuantifierPusher]: treesize reduction 22, result has 29.0 percent of original size [2021-05-01 06:41:42,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:42,555 INFO L142 QuantifierPusher]: treesize reduction 26, result has 40.9 percent of original size [2021-05-01 06:41:42,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:41:42,566 INFO L142 QuantifierPusher]: treesize reduction 18, result has 14.3 percent of original size [2021-05-01 06:41:42,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:42,570 INFO L142 QuantifierPusher]: treesize reduction 18, result has 41.9 percent of original size [2021-05-01 06:41:42,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:42,582 INFO L142 QuantifierPusher]: treesize reduction 15, result has 69.4 percent of original size [2021-05-01 06:41:42,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:42,609 INFO L142 QuantifierPusher]: treesize reduction 15, result has 77.3 percent of original size [2021-05-01 06:41:42,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:41:42,644 INFO L142 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-05-01 06:41:42,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:41:42,671 INFO L142 QuantifierPusher]: treesize reduction 9, result has 82.7 percent of original size [2021-05-01 06:41:42,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:41:42,697 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.6 percent of original size [2021-05-01 06:41:42,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:41:42,720 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.5 percent of original size [2021-05-01 06:41:42,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:42,736 INFO L142 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-05-01 06:41:42,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:41:42,754 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size [2021-05-01 06:41:42,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:42,781 INFO L142 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size [2021-05-01 06:41:42,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:42,782 INFO L142 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-05-01 06:41:42,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:42,783 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-05-01 06:41:42,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:41:42,784 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-05-01 06:41:42,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:41:42,804 INFO L142 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-05-01 06:41:42,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:41:42,833 INFO L142 QuantifierPusher]: treesize reduction 4, result has 89.2 percent of original size [2021-05-01 06:41:42,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:42,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:42,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:42,870 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-05-01 06:41:42,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:42,895 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-05-01 06:41:42,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:41:42,924 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-05-01 06:41:42,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:42,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:42,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:41:42,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:42,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:42,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:42,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:42,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:42,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:42,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:42,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:43,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:43,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:43,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:43,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-05-01 06:41:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:43,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:43,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:43,042 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:43,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952743652] [2021-05-01 06:41:43,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [952743652] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:43,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:43,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:41:43,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130432949] [2021-05-01 06:41:43,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:41:43,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:43,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:41:43,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:41:43,043 INFO L87 Difference]: Start difference. First operand 910 states and 1082 transitions. Second operand has 26 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 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) [2021-05-01 06:41:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:45,021 INFO L93 Difference]: Finished difference Result 978 states and 1161 transitions. [2021-05-01 06:41:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-01 06:41:45,022 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 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 [2021-05-01 06:41:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:45,024 INFO L225 Difference]: With dead ends: 978 [2021-05-01 06:41:45,024 INFO L226 Difference]: Without dead ends: 976 [2021-05-01 06:41:45,025 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1041.8ms TimeCoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2021-05-01 06:41:45,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-05-01 06:41:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 904. [2021-05-01 06:41:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 855 states have (on average 1.1801169590643275) internal successors, (1009), 875 states have internal predecessors, (1009), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (32), 13 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-01 06:41:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1075 transitions. [2021-05-01 06:41:45,381 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1075 transitions. Word has length 63 [2021-05-01 06:41:45,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:45,381 INFO L480 AbstractCegarLoop]: Abstraction has 904 states and 1075 transitions. [2021-05-01 06:41:45,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 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) [2021-05-01 06:41:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1075 transitions. [2021-05-01 06:41:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-01 06:41:45,382 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:45,382 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] [2021-05-01 06:41:45,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-01 06:41:45,382 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:45,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:45,383 INFO L82 PathProgramCache]: Analyzing trace with hash -645721556, now seen corresponding path program 7 times [2021-05-01 06:41:45,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:45,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107044305] [2021-05-01 06:41:45,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:45,387 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:45,387 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:45,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:45,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:45,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:45,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:45,466 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:41:45,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:45,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-05-01 06:41:45,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:41:45,492 INFO L142 QuantifierPusher]: treesize reduction 16, result has 15.8 percent of original size [2021-05-01 06:41:45,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:45,497 INFO L142 QuantifierPusher]: treesize reduction 17, result has 29.2 percent of original size [2021-05-01 06:41:45,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:45,501 INFO L142 QuantifierPusher]: treesize reduction 55, result has 47.6 percent of original size [2021-05-01 06:41:45,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:41:45,532 INFO L142 QuantifierPusher]: treesize reduction 47, result has 59.1 percent of original size [2021-05-01 06:41:45,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:41:45,576 INFO L142 QuantifierPusher]: treesize reduction 49, result has 56.6 percent of original size [2021-05-01 06:41:45,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:41:45,612 INFO L142 QuantifierPusher]: treesize reduction 27, result has 54.2 percent of original size [2021-05-01 06:41:45,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:41:45,617 INFO L142 QuantifierPusher]: treesize reduction 39, result has 55.2 percent of original size [2021-05-01 06:41:45,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:45,643 INFO L142 QuantifierPusher]: treesize reduction 33, result has 62.1 percent of original size [2021-05-01 06:41:45,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:45,677 INFO L142 QuantifierPusher]: treesize reduction 46, result has 60.0 percent of original size [2021-05-01 06:41:45,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:41:45,713 INFO L142 QuantifierPusher]: treesize reduction 42, result has 61.8 percent of original size [2021-05-01 06:41:45,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:41:45,749 INFO L142 QuantifierPusher]: treesize reduction 42, result has 66.1 percent of original size [2021-05-01 06:41:45,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:41:45,792 INFO L142 QuantifierPusher]: treesize reduction 68, result has 53.1 percent of original size [2021-05-01 06:41:45,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:41:45,841 INFO L142 QuantifierPusher]: treesize reduction 58, result has 63.7 percent of original size [2021-05-01 06:41:45,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-05-01 06:41:45,910 INFO L142 QuantifierPusher]: treesize reduction 58, result has 63.5 percent of original size [2021-05-01 06:41:45,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 06:41:45,968 INFO L142 QuantifierPusher]: treesize reduction 38, result has 60.0 percent of original size [2021-05-01 06:41:45,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:41:46,000 INFO L142 QuantifierPusher]: treesize reduction 40, result has 58.8 percent of original size [2021-05-01 06:41:46,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:41:46,033 INFO L142 QuantifierPusher]: treesize reduction 33, result has 68.9 percent of original size [2021-05-01 06:41:46,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:41:46,070 INFO L142 QuantifierPusher]: treesize reduction 34, result has 58.5 percent of original size [2021-05-01 06:41:46,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:41:46,118 INFO L142 QuantifierPusher]: treesize reduction 31, result has 67.7 percent of original size [2021-05-01 06:41:46,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:41:46,166 INFO L142 QuantifierPusher]: treesize reduction 32, result has 71.2 percent of original size [2021-05-01 06:41:46,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:41:46,194 INFO L142 QuantifierPusher]: treesize reduction 32, result has 70.6 percent of original size [2021-05-01 06:41:46,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:41:46,220 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-05-01 06:41:46,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:46,248 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-05-01 06:41:46,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:41:46,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-05-01 06:41:46,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:41:46,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 06:41:46,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:41:46,330 INFO L142 QuantifierPusher]: treesize reduction 33, result has 48.4 percent of original size [2021-05-01 06:41:46,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:41:46,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-05-01 06:41:46,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:46,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:46,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:41:46,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:46,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:46,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:46,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:46,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:46,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:46,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:46,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:46,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:46,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-01 06:41:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:46,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:46,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:46,499 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:46,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107044305] [2021-05-01 06:41:46,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1107044305] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:46,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:46,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-01 06:41:46,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026506170] [2021-05-01 06:41:46,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-01 06:41:46,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:46,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-01 06:41:46,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2021-05-01 06:41:46,500 INFO L87 Difference]: Start difference. First operand 904 states and 1075 transitions. Second operand has 32 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 30 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) [2021-05-01 06:41:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:49,276 INFO L93 Difference]: Finished difference Result 962 states and 1143 transitions. [2021-05-01 06:41:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-01 06:41:49,277 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 30 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 [2021-05-01 06:41:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:49,279 INFO L225 Difference]: With dead ends: 962 [2021-05-01 06:41:49,279 INFO L226 Difference]: Without dead ends: 960 [2021-05-01 06:41:49,279 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 2161.2ms TimeCoverageRelationStatistics Valid=414, Invalid=3492, Unknown=0, NotChecked=0, Total=3906 [2021-05-01 06:41:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-05-01 06:41:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 930. [2021-05-01 06:41:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 878 states have (on average 1.1799544419134396) internal successors, (1036), 899 states have internal predecessors, (1036), 36 states have call successors, (36), 16 states have call predecessors, (36), 15 states have return successors, (34), 14 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-01 06:41:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1106 transitions. [2021-05-01 06:41:49,642 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1106 transitions. Word has length 64 [2021-05-01 06:41:49,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:49,642 INFO L480 AbstractCegarLoop]: Abstraction has 930 states and 1106 transitions. [2021-05-01 06:41:49,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 30 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) [2021-05-01 06:41:49,642 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1106 transitions. [2021-05-01 06:41:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-01 06:41:49,643 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:49,643 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] [2021-05-01 06:41:49,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-01 06:41:49,644 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1217741736, now seen corresponding path program 6 times [2021-05-01 06:41:49,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:49,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662422291] [2021-05-01 06:41:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:49,648 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:49,649 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:49,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:49,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:49,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:49,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:49,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:49,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:49,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:49,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:49,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:49,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:49,706 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:41:49,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:49,710 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-05-01 06:41:49,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:41:49,714 INFO L142 QuantifierPusher]: treesize reduction 8, result has 78.4 percent of original size [2021-05-01 06:41:49,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:41:49,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:49,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:41:49,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:49,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:41:49,756 INFO L142 QuantifierPusher]: treesize reduction 19, result has 78.2 percent of original size [2021-05-01 06:41:49,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:41:49,791 INFO L142 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size [2021-05-01 06:41:49,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:41:49,840 INFO L142 QuantifierPusher]: treesize reduction 19, result has 75.9 percent of original size [2021-05-01 06:41:49,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:41:49,883 INFO L142 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size [2021-05-01 06:41:49,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:41:49,907 INFO L142 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size [2021-05-01 06:41:49,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:41:49,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:41:49,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:49,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:41:49,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:49,969 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 06:41:49,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:49,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-05-01 06:41:49,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:50,013 INFO L142 QuantifierPusher]: treesize reduction 35, result has 61.5 percent of original size [2021-05-01 06:41:50,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:41:50,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:50,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:50,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:50,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:50,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:50,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:50,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-05-01 06:41:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:50,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:50,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-05-01 06:41:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:50,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:50,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:50,120 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:50,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662422291] [2021-05-01 06:41:50,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1662422291] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:50,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:50,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-01 06:41:50,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148357595] [2021-05-01 06:41:50,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-01 06:41:50,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:50,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-01 06:41:50,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-05-01 06:41:50,122 INFO L87 Difference]: Start difference. First operand 930 states and 1106 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 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) [2021-05-01 06:41:51,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:51,502 INFO L93 Difference]: Finished difference Result 984 states and 1171 transitions. [2021-05-01 06:41:51,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-01 06:41:51,503 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 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 65 [2021-05-01 06:41:51,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:51,505 INFO L225 Difference]: With dead ends: 984 [2021-05-01 06:41:51,505 INFO L226 Difference]: Without dead ends: 982 [2021-05-01 06:41:51,505 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 791.3ms TimeCoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2021-05-01 06:41:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-05-01 06:41:51,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 976. [2021-05-01 06:41:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 915 states have (on average 1.1759562841530056) internal successors, (1076), 940 states have internal predecessors, (1076), 44 states have call successors, (44), 17 states have call predecessors, (44), 16 states have return successors, (42), 18 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-01 06:41:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1162 transitions. [2021-05-01 06:41:51,926 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1162 transitions. Word has length 65 [2021-05-01 06:41:51,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:51,926 INFO L480 AbstractCegarLoop]: Abstraction has 976 states and 1162 transitions. [2021-05-01 06:41:51,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 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) [2021-05-01 06:41:51,926 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1162 transitions. [2021-05-01 06:41:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-01 06:41:51,927 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:51,927 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] [2021-05-01 06:41:51,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-01 06:41:51,928 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:51,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:51,928 INFO L82 PathProgramCache]: Analyzing trace with hash 775255317, now seen corresponding path program 18 times [2021-05-01 06:41:51,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:51,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730690936] [2021-05-01 06:41:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:51,935 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:51,935 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:52,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:52,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:52,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:52,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:52,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:52,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:52,086 INFO L142 QuantifierPusher]: treesize reduction 29, result has 25.6 percent of original size [2021-05-01 06:41:52,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:41:52,096 INFO L142 QuantifierPusher]: treesize reduction 64, result has 28.1 percent of original size [2021-05-01 06:41:52,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:52,113 INFO L142 QuantifierPusher]: treesize reduction 72, result has 18.2 percent of original size [2021-05-01 06:41:52,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:52,130 INFO L142 QuantifierPusher]: treesize reduction 81, result has 16.5 percent of original size [2021-05-01 06:41:52,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:52,147 INFO L142 QuantifierPusher]: treesize reduction 69, result has 4.2 percent of original size [2021-05-01 06:41:52,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:52,157 INFO L142 QuantifierPusher]: treesize reduction 83, result has 19.4 percent of original size [2021-05-01 06:41:52,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:41:52,163 INFO L142 QuantifierPusher]: treesize reduction 131, result has 39.1 percent of original size [2021-05-01 06:41:52,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:41:52,205 INFO L142 QuantifierPusher]: treesize reduction 123, result has 46.5 percent of original size [2021-05-01 06:41:52,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-01 06:41:52,267 INFO L142 QuantifierPusher]: treesize reduction 124, result has 48.8 percent of original size [2021-05-01 06:41:52,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-05-01 06:41:52,335 INFO L142 QuantifierPusher]: treesize reduction 123, result has 48.5 percent of original size [2021-05-01 06:41:52,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-05-01 06:41:52,396 INFO L142 QuantifierPusher]: treesize reduction 121, result has 28.8 percent of original size [2021-05-01 06:41:52,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:41:52,427 INFO L142 QuantifierPusher]: treesize reduction 69, result has 43.9 percent of original size [2021-05-01 06:41:52,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:41:52,460 INFO L142 QuantifierPusher]: treesize reduction 47, result has 64.9 percent of original size [2021-05-01 06:41:52,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:41:52,502 INFO L142 QuantifierPusher]: treesize reduction 39, result has 73.6 percent of original size [2021-05-01 06:41:52,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-05-01 06:41:52,521 INFO L142 QuantifierPusher]: treesize reduction 22, result has 72.2 percent of original size [2021-05-01 06:41:52,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:41:52,537 INFO L142 QuantifierPusher]: treesize reduction 24, result has 69.6 percent of original size [2021-05-01 06:41:52,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:41:52,571 INFO L142 QuantifierPusher]: treesize reduction 49, result has 70.7 percent of original size [2021-05-01 06:41:52,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-05-01 06:41:52,633 INFO L142 QuantifierPusher]: treesize reduction 40, result has 57.9 percent of original size [2021-05-01 06:41:52,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:41:52,635 INFO L142 QuantifierPusher]: treesize reduction 41, result has 55.9 percent of original size [2021-05-01 06:41:52,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:52,670 INFO L142 QuantifierPusher]: treesize reduction 41, result has 62.4 percent of original size [2021-05-01 06:41:52,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:41:52,710 INFO L142 QuantifierPusher]: treesize reduction 41, result has 55.9 percent of original size [2021-05-01 06:41:52,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:41:52,712 INFO L142 QuantifierPusher]: treesize reduction 42, result has 54.8 percent of original size [2021-05-01 06:41:52,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:41:52,748 INFO L142 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-05-01 06:41:52,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:41:52,786 INFO L142 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-05-01 06:41:52,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:41:52,816 INFO L142 QuantifierPusher]: treesize reduction 38, result has 65.8 percent of original size [2021-05-01 06:41:52,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:41:52,869 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:41:52,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:52,894 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.1 percent of original size [2021-05-01 06:41:52,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:41:52,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:52,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:52,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:52,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:52,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:52,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:53,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:53,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:53,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:53,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:53,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:53,051 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:53,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730690936] [2021-05-01 06:41:53,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [730690936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:53,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:53,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 06:41:53,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190547517] [2021-05-01 06:41:53,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 06:41:53,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:53,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 06:41:53,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2021-05-01 06:41:53,052 INFO L87 Difference]: Start difference. First operand 976 states and 1162 transitions. Second operand has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 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) [2021-05-01 06:41:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:55,546 INFO L93 Difference]: Finished difference Result 1337 states and 1609 transitions. [2021-05-01 06:41:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-01 06:41:55,547 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 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 [2021-05-01 06:41:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:55,549 INFO L225 Difference]: With dead ends: 1337 [2021-05-01 06:41:55,549 INFO L226 Difference]: Without dead ends: 1335 [2021-05-01 06:41:55,550 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1632.9ms TimeCoverageRelationStatistics Valid=303, Invalid=2453, Unknown=0, NotChecked=0, Total=2756 [2021-05-01 06:41:55,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-05-01 06:41:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1039. [2021-05-01 06:41:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 974 states have (on average 1.1806981519507187) internal successors, (1150), 1001 states have internal predecessors, (1150), 46 states have call successors, (46), 19 states have call predecessors, (46), 18 states have return successors, (44), 18 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-01 06:41:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1240 transitions. [2021-05-01 06:41:55,988 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1240 transitions. Word has length 63 [2021-05-01 06:41:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:55,989 INFO L480 AbstractCegarLoop]: Abstraction has 1039 states and 1240 transitions. [2021-05-01 06:41:55,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 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) [2021-05-01 06:41:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1240 transitions. [2021-05-01 06:41:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-01 06:41:55,990 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:55,990 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] [2021-05-01 06:41:55,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-01 06:41:55,990 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:55,990 INFO L82 PathProgramCache]: Analyzing trace with hash 78615171, now seen corresponding path program 19 times [2021-05-01 06:41:55,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:55,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577907168] [2021-05-01 06:41:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:55,999 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:41:56,000 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:56,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:56,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:56,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:56,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:56,065 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:41:56,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:56,078 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:41:56,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:41:56,092 INFO L142 QuantifierPusher]: treesize reduction 64, result has 36.0 percent of original size [2021-05-01 06:41:56,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:41:56,108 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-05-01 06:41:56,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:56,127 INFO L142 QuantifierPusher]: treesize reduction 16, result has 52.9 percent of original size [2021-05-01 06:41:56,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:41:56,145 INFO L142 QuantifierPusher]: treesize reduction 23, result has 11.5 percent of original size [2021-05-01 06:41:56,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:56,153 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-05-01 06:41:56,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:56,157 INFO L142 QuantifierPusher]: treesize reduction 16, result has 65.2 percent of original size [2021-05-01 06:41:56,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:41:56,175 INFO L142 QuantifierPusher]: treesize reduction 13, result has 75.9 percent of original size [2021-05-01 06:41:56,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:56,209 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.7 percent of original size [2021-05-01 06:41:56,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:41:56,254 INFO L142 QuantifierPusher]: treesize reduction 46, result has 64.9 percent of original size [2021-05-01 06:41:56,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-05-01 06:41:56,293 INFO L142 QuantifierPusher]: treesize reduction 46, result has 67.4 percent of original size [2021-05-01 06:41:56,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 06:41:56,340 INFO L142 QuantifierPusher]: treesize reduction 46, result has 66.9 percent of original size [2021-05-01 06:41:56,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:41:56,381 INFO L142 QuantifierPusher]: treesize reduction 23, result has 64.1 percent of original size [2021-05-01 06:41:56,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:56,410 INFO L142 QuantifierPusher]: treesize reduction 23, result has 64.1 percent of original size [2021-05-01 06:41:56,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:41:56,444 INFO L142 QuantifierPusher]: treesize reduction 38, result has 71.4 percent of original size [2021-05-01 06:41:56,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 06:41:56,501 INFO L142 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size [2021-05-01 06:41:56,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:41:56,531 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-05-01 06:41:56,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:41:56,562 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.1 percent of original size [2021-05-01 06:41:56,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:41:56,596 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-05-01 06:41:56,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:41:56,597 INFO L142 QuantifierPusher]: treesize reduction 11, result has 76.6 percent of original size [2021-05-01 06:41:56,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:41:56,630 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.7 percent of original size [2021-05-01 06:41:56,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:41:56,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:41:56,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:56,693 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:41:56,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:56,717 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:41:56,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:41:56,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:56,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:41:56,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:56,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:56,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:56,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:56,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:56,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:56,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:56,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:56,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:56,842 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:56,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577907168] [2021-05-01 06:41:56,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [577907168] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:56,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:56,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 06:41:56,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702377131] [2021-05-01 06:41:56,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 06:41:56,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:56,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 06:41:56,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2021-05-01 06:41:56,843 INFO L87 Difference]: Start difference. First operand 1039 states and 1240 transitions. Second operand has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 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) [2021-05-01 06:42:00,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:00,007 INFO L93 Difference]: Finished difference Result 1319 states and 1584 transitions. [2021-05-01 06:42:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-01 06:42:00,009 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 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 [2021-05-01 06:42:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:00,010 INFO L225 Difference]: With dead ends: 1319 [2021-05-01 06:42:00,010 INFO L226 Difference]: Without dead ends: 1317 [2021-05-01 06:42:00,011 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 1778.7ms TimeCoverageRelationStatistics Valid=439, Invalid=3343, Unknown=0, NotChecked=0, Total=3782 [2021-05-01 06:42:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2021-05-01 06:42:00,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1067. [2021-05-01 06:42:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1001 states have (on average 1.1818181818181819) internal successors, (1183), 1028 states have internal predecessors, (1183), 46 states have call successors, (46), 20 states have call predecessors, (46), 19 states have return successors, (44), 18 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-01 06:42:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1273 transitions. [2021-05-01 06:42:00,451 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1273 transitions. Word has length 63 [2021-05-01 06:42:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:00,451 INFO L480 AbstractCegarLoop]: Abstraction has 1067 states and 1273 transitions. [2021-05-01 06:42:00,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 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) [2021-05-01 06:42:00,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1273 transitions. [2021-05-01 06:42:00,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-01 06:42:00,452 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:00,452 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] [2021-05-01 06:42:00,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-01 06:42:00,453 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:00,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1108087607, now seen corresponding path program 20 times [2021-05-01 06:42:00,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:00,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276227992] [2021-05-01 06:42:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:00,457 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:00,457 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:00,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:00,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:00,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:00,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:00,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:00,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:00,515 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-05-01 06:42:00,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:42:00,529 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:42:00,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:00,533 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:42:00,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:00,546 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-05-01 06:42:00,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:00,551 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:42:00,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:00,564 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-05-01 06:42:00,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:00,571 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:42:00,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:00,585 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-05-01 06:42:00,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:00,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-05-01 06:42:00,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:42:00,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:00,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:00,606 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:42:00,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:00,610 INFO L142 QuantifierPusher]: treesize reduction 43, result has 54.3 percent of original size [2021-05-01 06:42:00,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:42:00,631 INFO L142 QuantifierPusher]: treesize reduction 36, result has 67.0 percent of original size [2021-05-01 06:42:00,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:42:00,671 INFO L142 QuantifierPusher]: treesize reduction 36, result has 65.7 percent of original size [2021-05-01 06:42:00,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:42:00,705 INFO L142 QuantifierPusher]: treesize reduction 25, result has 44.4 percent of original size [2021-05-01 06:42:00,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:00,709 INFO L142 QuantifierPusher]: treesize reduction 28, result has 34.9 percent of original size [2021-05-01 06:42:00,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:42:00,725 INFO L142 QuantifierPusher]: treesize reduction 24, result has 56.4 percent of original size [2021-05-01 06:42:00,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:42:00,750 INFO L142 QuantifierPusher]: treesize reduction 38, result has 50.0 percent of original size [2021-05-01 06:42:00,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:42:00,781 INFO L142 QuantifierPusher]: treesize reduction 30, result has 67.0 percent of original size [2021-05-01 06:42:00,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:42:00,830 INFO L142 QuantifierPusher]: treesize reduction 30, result has 70.6 percent of original size [2021-05-01 06:42:00,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:42:00,875 INFO L142 QuantifierPusher]: treesize reduction 30, result has 70.0 percent of original size [2021-05-01 06:42:00,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:42:00,917 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size [2021-05-01 06:42:00,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:42:00,943 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size [2021-05-01 06:42:00,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:42:00,972 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.5 percent of original size [2021-05-01 06:42:00,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:42:01,005 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size [2021-05-01 06:42:01,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:42:01,007 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size [2021-05-01 06:42:01,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:42:01,038 INFO L142 QuantifierPusher]: treesize reduction 8, result has 91.8 percent of original size [2021-05-01 06:42:01,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 06:42:01,087 INFO L142 QuantifierPusher]: treesize reduction 8, result has 91.3 percent of original size [2021-05-01 06:42:01,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:42:01,135 INFO L142 QuantifierPusher]: treesize reduction 10, result has 88.9 percent of original size [2021-05-01 06:42:01,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 06:42:01,177 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.9 percent of original size [2021-05-01 06:42:01,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:42:01,215 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:42:01,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:01,246 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:42:01,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:01,262 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:42:01,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:01,289 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:01,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:01,313 INFO L142 QuantifierPusher]: treesize reduction 42, result has 46.2 percent of original size [2021-05-01 06:42:01,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:01,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:01,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:01,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:01,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:01,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:01,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:01,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:01,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:01,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:01,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:01,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:01,443 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:01,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276227992] [2021-05-01 06:42:01,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [276227992] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:01,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:01,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-01 06:42:01,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514016066] [2021-05-01 06:42:01,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-01 06:42:01,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:01,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-01 06:42:01,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 06:42:01,444 INFO L87 Difference]: Start difference. First operand 1067 states and 1273 transitions. Second operand has 34 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 32 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) [2021-05-01 06:42:04,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:04,054 INFO L93 Difference]: Finished difference Result 1167 states and 1390 transitions. [2021-05-01 06:42:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-01 06:42:04,055 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 32 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 [2021-05-01 06:42:04,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:04,057 INFO L225 Difference]: With dead ends: 1167 [2021-05-01 06:42:04,057 INFO L226 Difference]: Without dead ends: 1165 [2021-05-01 06:42:04,058 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 7 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 1815.6ms TimeCoverageRelationStatistics Valid=490, Invalid=3050, Unknown=0, NotChecked=0, Total=3540 [2021-05-01 06:42:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-05-01 06:42:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1067. [2021-05-01 06:42:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1002 states have (on average 1.183632734530938) internal successors, (1186), 1028 states have internal predecessors, (1186), 45 states have call successors, (45), 20 states have call predecessors, (45), 19 states have return successors, (43), 18 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-01 06:42:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1274 transitions. [2021-05-01 06:42:04,503 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1274 transitions. Word has length 63 [2021-05-01 06:42:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:04,503 INFO L480 AbstractCegarLoop]: Abstraction has 1067 states and 1274 transitions. [2021-05-01 06:42:04,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 32 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) [2021-05-01 06:42:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1274 transitions. [2021-05-01 06:42:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:04,504 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:04,504 INFO L519 BasicCegarLoop]: trace histogram [6, 5, 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, 1] [2021-05-01 06:42:04,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-01 06:42:04,505 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:04,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:04,505 INFO L82 PathProgramCache]: Analyzing trace with hash -500007896, now seen corresponding path program 8 times [2021-05-01 06:42:04,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:04,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376881891] [2021-05-01 06:42:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:04,509 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:04,509 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:04,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:04,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:04,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:04,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:04,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:04,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:04,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:04,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:04,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:04,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:04,580 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:42:04,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:04,583 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-05-01 06:42:04,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:42:04,588 INFO L142 QuantifierPusher]: treesize reduction 19, result has 60.4 percent of original size [2021-05-01 06:42:04,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:42:04,608 INFO L142 QuantifierPusher]: treesize reduction 19, result has 68.9 percent of original size [2021-05-01 06:42:04,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:42:04,638 INFO L142 QuantifierPusher]: treesize reduction 19, result has 67.8 percent of original size [2021-05-01 06:42:04,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:42:04,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:42:04,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:04,687 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:42:04,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:04,709 INFO L142 QuantifierPusher]: treesize reduction 57, result has 50.9 percent of original size [2021-05-01 06:42:04,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:42:04,733 INFO L142 QuantifierPusher]: treesize reduction 15, result has 81.7 percent of original size [2021-05-01 06:42:04,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:42:04,760 INFO L142 QuantifierPusher]: treesize reduction 10, result has 86.7 percent of original size [2021-05-01 06:42:04,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:42:04,785 INFO L142 QuantifierPusher]: treesize reduction 11, result has 77.1 percent of original size [2021-05-01 06:42:04,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:42:04,806 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:42:04,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:04,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:42:04,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:04,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:04,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:04,864 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 06:42:04,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:04,886 INFO L142 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-05-01 06:42:04,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:04,912 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:42:04,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:04,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-05-01 06:42:04,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:04,943 INFO L142 QuantifierPusher]: treesize reduction 36, result has 60.9 percent of original size [2021-05-01 06:42:04,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:42:04,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:04,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:04,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:04,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:05,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:05,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:05,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:05,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:05,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:05,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:05,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-01 06:42:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:05,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:05,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:05,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-01 06:42:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:05,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:05,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:05,060 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:05,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376881891] [2021-05-01 06:42:05,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [376881891] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:05,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:05,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:42:05,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713599973] [2021-05-01 06:42:05,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:42:05,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:05,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:42:05,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:42:05,065 INFO L87 Difference]: Start difference. First operand 1067 states and 1274 transitions. Second operand has 26 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 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) [2021-05-01 06:42:07,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:07,560 INFO L93 Difference]: Finished difference Result 1172 states and 1396 transitions. [2021-05-01 06:42:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-01 06:42:07,565 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 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 [2021-05-01 06:42:07,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:07,567 INFO L225 Difference]: With dead ends: 1172 [2021-05-01 06:42:07,567 INFO L226 Difference]: Without dead ends: 1116 [2021-05-01 06:42:07,568 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1479.8ms TimeCoverageRelationStatistics Valid=409, Invalid=2561, Unknown=0, NotChecked=0, Total=2970 [2021-05-01 06:42:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-05-01 06:42:07,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1017. [2021-05-01 06:42:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 956 states have (on average 1.1882845188284519) internal successors, (1136), 982 states have internal predecessors, (1136), 42 states have call successors, (42), 19 states have call predecessors, (42), 18 states have return successors, (40), 15 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-01 06:42:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1218 transitions. [2021-05-01 06:42:08,001 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1218 transitions. Word has length 66 [2021-05-01 06:42:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:08,001 INFO L480 AbstractCegarLoop]: Abstraction has 1017 states and 1218 transitions. [2021-05-01 06:42:08,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 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) [2021-05-01 06:42:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1218 transitions. [2021-05-01 06:42:08,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:08,002 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:08,002 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] [2021-05-01 06:42:08,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-01 06:42:08,003 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:08,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:08,003 INFO L82 PathProgramCache]: Analyzing trace with hash -683336596, now seen corresponding path program 13 times [2021-05-01 06:42:08,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:08,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196083930] [2021-05-01 06:42:08,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:08,007 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:08,007 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:08,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:08,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:08,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:08,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:08,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:08,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:08,071 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:42:08,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:08,085 INFO L142 QuantifierPusher]: treesize reduction 29, result has 63.3 percent of original size [2021-05-01 06:42:08,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:42:08,105 INFO L142 QuantifierPusher]: treesize reduction 24, result has 11.1 percent of original size [2021-05-01 06:42:08,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:08,112 INFO L142 QuantifierPusher]: treesize reduction 25, result has 21.9 percent of original size [2021-05-01 06:42:08,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:08,117 INFO L142 QuantifierPusher]: treesize reduction 42, result has 37.3 percent of original size [2021-05-01 06:42:08,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:08,140 INFO L142 QuantifierPusher]: treesize reduction 39, result has 53.6 percent of original size [2021-05-01 06:42:08,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:42:08,174 INFO L142 QuantifierPusher]: treesize reduction 49, result has 55.9 percent of original size [2021-05-01 06:42:08,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:42:08,218 INFO L142 QuantifierPusher]: treesize reduction 30, result has 68.4 percent of original size [2021-05-01 06:42:08,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:42:08,259 INFO L142 QuantifierPusher]: treesize reduction 30, result has 67.4 percent of original size [2021-05-01 06:42:08,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:42:08,308 INFO L142 QuantifierPusher]: treesize reduction 30, result has 65.9 percent of original size [2021-05-01 06:42:08,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:42:08,342 INFO L142 QuantifierPusher]: treesize reduction 31, result has 59.2 percent of original size [2021-05-01 06:42:08,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:42:08,370 INFO L142 QuantifierPusher]: treesize reduction 34, result has 57.5 percent of original size [2021-05-01 06:42:08,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:42:08,405 INFO L142 QuantifierPusher]: treesize reduction 68, result has 56.4 percent of original size [2021-05-01 06:42:08,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:42:08,459 INFO L142 QuantifierPusher]: treesize reduction 38, result has 56.8 percent of original size [2021-05-01 06:42:08,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:42:08,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:42:08,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:08,518 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:42:08,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:42:08,540 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-05-01 06:42:08,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:42:08,565 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:42:08,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:42:08,594 INFO L142 QuantifierPusher]: treesize reduction 26, result has 69.0 percent of original size [2021-05-01 06:42:08,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:42:08,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:08,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:42:08,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:08,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:08,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:08,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:08,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:08,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:08,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:08,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:08,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:08,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-01 06:42:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:08,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:08,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:08,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-01 06:42:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:08,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:08,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:08,746 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:08,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196083930] [2021-05-01 06:42:08,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [196083930] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:08,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:08,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:42:08,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265224274] [2021-05-01 06:42:08,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:42:08,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:08,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:42:08,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:42:08,747 INFO L87 Difference]: Start difference. First operand 1017 states and 1218 transitions. Second operand has 26 states, 25 states have (on average 2.2) internal successors, (55), 24 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) [2021-05-01 06:42:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:11,652 INFO L93 Difference]: Finished difference Result 1086 states and 1299 transitions. [2021-05-01 06:42:11,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-01 06:42:11,653 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 24 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 [2021-05-01 06:42:11,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:11,655 INFO L225 Difference]: With dead ends: 1086 [2021-05-01 06:42:11,655 INFO L226 Difference]: Without dead ends: 1041 [2021-05-01 06:42:11,656 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 1973.6ms TimeCoverageRelationStatistics Valid=410, Invalid=3130, Unknown=0, NotChecked=0, Total=3540 [2021-05-01 06:42:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-05-01 06:42:12,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 992. [2021-05-01 06:42:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 933 states have (on average 1.1886387995712755) internal successors, (1109), 958 states have internal predecessors, (1109), 40 states have call successors, (40), 19 states have call predecessors, (40), 18 states have return successors, (38), 14 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-01 06:42:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1187 transitions. [2021-05-01 06:42:12,072 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1187 transitions. Word has length 66 [2021-05-01 06:42:12,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:12,072 INFO L480 AbstractCegarLoop]: Abstraction has 992 states and 1187 transitions. [2021-05-01 06:42:12,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 24 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) [2021-05-01 06:42:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1187 transitions. [2021-05-01 06:42:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:12,073 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:12,073 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] [2021-05-01 06:42:12,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-01 06:42:12,073 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:12,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:12,073 INFO L82 PathProgramCache]: Analyzing trace with hash 781141083, now seen corresponding path program 14 times [2021-05-01 06:42:12,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:12,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625331496] [2021-05-01 06:42:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:12,077 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:12,078 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:12,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:12,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:12,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:12,126 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:42:12,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:12,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:42:12,138 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-05-01 06:42:12,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:12,141 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-05-01 06:42:12,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:12,153 INFO L142 QuantifierPusher]: treesize reduction 17, result has 43.3 percent of original size [2021-05-01 06:42:12,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:12,167 INFO L142 QuantifierPusher]: treesize reduction 17, result has 43.3 percent of original size [2021-05-01 06:42:12,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:12,178 INFO L142 QuantifierPusher]: treesize reduction 17, result has 43.3 percent of original size [2021-05-01 06:42:12,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:12,188 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-05-01 06:42:12,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:12,200 INFO L142 QuantifierPusher]: treesize reduction 17, result has 43.3 percent of original size [2021-05-01 06:42:12,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:12,216 INFO L142 QuantifierPusher]: treesize reduction 16, result has 65.2 percent of original size [2021-05-01 06:42:12,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:42:12,254 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size [2021-05-01 06:42:12,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:42:12,274 INFO L142 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-05-01 06:42:12,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:12,293 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-05-01 06:42:12,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:12,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:12,325 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-05-01 06:42:12,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:12,347 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-05-01 06:42:12,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:42:12,379 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-05-01 06:42:12,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:12,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:42:12,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:42:12,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:12,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:12,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:12,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:12,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-01 06:42:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:12,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:12,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:12,496 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:12,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625331496] [2021-05-01 06:42:12,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1625331496] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:12,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:12,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-01 06:42:12,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612759182] [2021-05-01 06:42:12,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-01 06:42:12,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:12,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-01 06:42:12,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2021-05-01 06:42:12,497 INFO L87 Difference]: Start difference. First operand 992 states and 1187 transitions. Second operand has 23 states, 21 states have (on average 2.761904761904762) 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) [2021-05-01 06:42:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:14,740 INFO L93 Difference]: Finished difference Result 1214 states and 1461 transitions. [2021-05-01 06:42:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-01 06:42:14,741 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.761904761904762) 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 66 [2021-05-01 06:42:14,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:14,743 INFO L225 Difference]: With dead ends: 1214 [2021-05-01 06:42:14,743 INFO L226 Difference]: Without dead ends: 1212 [2021-05-01 06:42:14,743 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1198.4ms TimeCoverageRelationStatistics Valid=705, Invalid=3077, Unknown=0, NotChecked=0, Total=3782 [2021-05-01 06:42:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-05-01 06:42:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 999. [2021-05-01 06:42:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 940 states have (on average 1.1882978723404256) internal successors, (1117), 965 states have internal predecessors, (1117), 40 states have call successors, (40), 19 states have call predecessors, (40), 18 states have return successors, (38), 14 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-01 06:42:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1195 transitions. [2021-05-01 06:42:15,172 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1195 transitions. Word has length 66 [2021-05-01 06:42:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:15,172 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 1195 transitions. [2021-05-01 06:42:15,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 21 states have (on average 2.761904761904762) 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) [2021-05-01 06:42:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1195 transitions. [2021-05-01 06:42:15,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:15,173 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:15,173 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] [2021-05-01 06:42:15,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-01 06:42:15,173 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:15,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:15,174 INFO L82 PathProgramCache]: Analyzing trace with hash -907802659, now seen corresponding path program 9 times [2021-05-01 06:42:15,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:15,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089795606] [2021-05-01 06:42:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:15,178 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:15,178 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:15,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:15,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:42:15,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:15,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:15,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:15,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:15,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:15,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:15,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:15,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:15,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:15,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:15,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:15,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-01 06:42:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:15,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:15,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:15,274 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:15,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089795606] [2021-05-01 06:42:15,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2089795606] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:15,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:15,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-01 06:42:15,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605324762] [2021-05-01 06:42:15,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-01 06:42:15,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:15,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-01 06:42:15,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-05-01 06:42:15,275 INFO L87 Difference]: Start difference. First operand 999 states and 1195 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 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) [2021-05-01 06:42:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:16,295 INFO L93 Difference]: Finished difference Result 1185 states and 1424 transitions. [2021-05-01 06:42:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-01 06:42:16,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 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 [2021-05-01 06:42:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:16,298 INFO L225 Difference]: With dead ends: 1185 [2021-05-01 06:42:16,298 INFO L226 Difference]: Without dead ends: 1144 [2021-05-01 06:42:16,299 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 267.0ms TimeCoverageRelationStatistics Valid=265, Invalid=727, Unknown=0, NotChecked=0, Total=992 [2021-05-01 06:42:16,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-05-01 06:42:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1000. [2021-05-01 06:42:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 941 states have (on average 1.1870350690754516) internal successors, (1117), 966 states have internal predecessors, (1117), 40 states have call successors, (40), 19 states have call predecessors, (40), 18 states have return successors, (38), 14 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-01 06:42:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1195 transitions. [2021-05-01 06:42:16,721 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1195 transitions. Word has length 66 [2021-05-01 06:42:16,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:16,721 INFO L480 AbstractCegarLoop]: Abstraction has 1000 states and 1195 transitions. [2021-05-01 06:42:16,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 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) [2021-05-01 06:42:16,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1195 transitions. [2021-05-01 06:42:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:16,723 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:16,723 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] [2021-05-01 06:42:16,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-01 06:42:16,723 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash 958384667, now seen corresponding path program 15 times [2021-05-01 06:42:16,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:16,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282052860] [2021-05-01 06:42:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:16,727 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:16,728 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:16,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:16,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:16,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:16,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:16,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:16,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:16,785 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:42:16,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:16,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:16,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:42:16,797 INFO L142 QuantifierPusher]: treesize reduction 22, result has 29.0 percent of original size [2021-05-01 06:42:16,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:42:16,801 INFO L142 QuantifierPusher]: treesize reduction 23, result has 36.1 percent of original size [2021-05-01 06:42:16,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:16,815 INFO L142 QuantifierPusher]: treesize reduction 25, result has 34.2 percent of original size [2021-05-01 06:42:16,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:42:16,833 INFO L142 QuantifierPusher]: treesize reduction 17, result has 68.5 percent of original size [2021-05-01 06:42:16,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:42:16,859 INFO L142 QuantifierPusher]: treesize reduction 19, result has 66.1 percent of original size [2021-05-01 06:42:16,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:42:16,885 INFO L142 QuantifierPusher]: treesize reduction 19, result has 74.0 percent of original size [2021-05-01 06:42:16,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:42:16,923 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.6 percent of original size [2021-05-01 06:42:16,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:42:16,953 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-05-01 06:42:16,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:42:16,981 INFO L142 QuantifierPusher]: treesize reduction 15, result has 71.7 percent of original size [2021-05-01 06:42:16,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:42:17,008 INFO L142 QuantifierPusher]: treesize reduction 10, result has 74.4 percent of original size [2021-05-01 06:42:17,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:42:17,029 INFO L142 QuantifierPusher]: treesize reduction 10, result has 74.4 percent of original size [2021-05-01 06:42:17,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:42:17,050 INFO L142 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-05-01 06:42:17,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:42:17,077 INFO L142 QuantifierPusher]: treesize reduction 4, result has 89.2 percent of original size [2021-05-01 06:42:17,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:17,100 INFO L142 QuantifierPusher]: treesize reduction 4, result has 89.2 percent of original size [2021-05-01 06:42:17,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:17,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:17,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:17,117 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-05-01 06:42:17,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:17,144 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-05-01 06:42:17,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:42:17,173 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-05-01 06:42:17,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:17,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:17,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:42:17,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:17,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:42:17,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:17,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:17,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:17,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:17,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:17,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:17,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:17,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:17,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-01 06:42:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:17,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:17,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:17,313 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:17,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282052860] [2021-05-01 06:42:17,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1282052860] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:17,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:17,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 06:42:17,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979070724] [2021-05-01 06:42:17,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 06:42:17,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:17,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 06:42:17,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-05-01 06:42:17,314 INFO L87 Difference]: Start difference. First operand 1000 states and 1195 transitions. Second operand has 25 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 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) [2021-05-01 06:42:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:19,989 INFO L93 Difference]: Finished difference Result 1127 states and 1345 transitions. [2021-05-01 06:42:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-01 06:42:19,990 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 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 [2021-05-01 06:42:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:19,992 INFO L225 Difference]: With dead ends: 1127 [2021-05-01 06:42:19,992 INFO L226 Difference]: Without dead ends: 1125 [2021-05-01 06:42:19,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1447.8ms TimeCoverageRelationStatistics Valid=371, Invalid=2935, Unknown=0, NotChecked=0, Total=3306 [2021-05-01 06:42:19,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-05-01 06:42:20,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 994. [2021-05-01 06:42:20,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 935 states have (on average 1.1871657754010696) internal successors, (1110), 960 states have internal predecessors, (1110), 40 states have call successors, (40), 19 states have call predecessors, (40), 18 states have return successors, (38), 14 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-01 06:42:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1188 transitions. [2021-05-01 06:42:20,430 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1188 transitions. Word has length 66 [2021-05-01 06:42:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:20,430 INFO L480 AbstractCegarLoop]: Abstraction has 994 states and 1188 transitions. [2021-05-01 06:42:20,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 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) [2021-05-01 06:42:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1188 transitions. [2021-05-01 06:42:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:20,432 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:20,432 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] [2021-05-01 06:42:20,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-01 06:42:20,432 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:20,432 INFO L82 PathProgramCache]: Analyzing trace with hash -614168551, now seen corresponding path program 10 times [2021-05-01 06:42:20,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:20,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687396031] [2021-05-01 06:42:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:20,436 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:20,437 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:20,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:20,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:20,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:20,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:20,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:20,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:20,503 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:42:20,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:20,517 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-05-01 06:42:20,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:20,527 INFO L142 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-05-01 06:42:20,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:20,544 INFO L142 QuantifierPusher]: treesize reduction 17, result has 15.0 percent of original size [2021-05-01 06:42:20,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:20,552 INFO L142 QuantifierPusher]: treesize reduction 30, result has 28.6 percent of original size [2021-05-01 06:42:20,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:42:20,556 INFO L142 QuantifierPusher]: treesize reduction 63, result has 43.8 percent of original size [2021-05-01 06:42:20,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:42:20,578 INFO L142 QuantifierPusher]: treesize reduction 55, result has 56.7 percent of original size [2021-05-01 06:42:20,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:42:20,618 INFO L142 QuantifierPusher]: treesize reduction 55, result has 60.4 percent of original size [2021-05-01 06:42:20,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:42:20,672 INFO L142 QuantifierPusher]: treesize reduction 55, result has 59.6 percent of original size [2021-05-01 06:42:20,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 06:42:20,720 INFO L142 QuantifierPusher]: treesize reduction 35, result has 49.3 percent of original size [2021-05-01 06:42:20,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:42:20,745 INFO L142 QuantifierPusher]: treesize reduction 48, result has 40.7 percent of original size [2021-05-01 06:42:20,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:20,784 INFO L142 QuantifierPusher]: treesize reduction 60, result has 56.2 percent of original size [2021-05-01 06:42:20,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:42:20,828 INFO L142 QuantifierPusher]: treesize reduction 42, result has 67.4 percent of original size [2021-05-01 06:42:20,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:42:20,874 INFO L142 QuantifierPusher]: treesize reduction 63, result has 57.1 percent of original size [2021-05-01 06:42:20,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:42:20,918 INFO L142 QuantifierPusher]: treesize reduction 63, result has 56.3 percent of original size [2021-05-01 06:42:20,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 06:42:20,954 INFO L142 QuantifierPusher]: treesize reduction 39, result has 56.2 percent of original size [2021-05-01 06:42:20,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:42:20,994 INFO L142 QuantifierPusher]: treesize reduction 36, result has 56.6 percent of original size [2021-05-01 06:42:20,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:21,033 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-05-01 06:42:21,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:42:21,065 INFO L142 QuantifierPusher]: treesize reduction 36, result has 44.6 percent of original size [2021-05-01 06:42:21,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:42:21,099 INFO L142 QuantifierPusher]: treesize reduction 38, result has 44.1 percent of original size [2021-05-01 06:42:21,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:42:21,128 INFO L142 QuantifierPusher]: treesize reduction 40, result has 53.5 percent of original size [2021-05-01 06:42:21,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:42:21,164 INFO L142 QuantifierPusher]: treesize reduction 38, result has 44.1 percent of original size [2021-05-01 06:42:21,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:42:21,165 INFO L142 QuantifierPusher]: treesize reduction 37, result has 44.8 percent of original size [2021-05-01 06:42:21,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:42:21,195 INFO L142 QuantifierPusher]: treesize reduction 24, result has 72.1 percent of original size [2021-05-01 06:42:21,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:42:21,231 INFO L142 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-05-01 06:42:21,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:42:21,271 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:42:21,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:42:21,297 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-05-01 06:42:21,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:42:21,327 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:42:21,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:42:21,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:21,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:21,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:21,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:21,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:21,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:21,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:21,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:21,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:21,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:21,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-01 06:42:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:21,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:21,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:21,466 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:21,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687396031] [2021-05-01 06:42:21,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [687396031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:21,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:21,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-01 06:42:21,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179545508] [2021-05-01 06:42:21,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-01 06:42:21,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:21,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-01 06:42:21,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 06:42:21,467 INFO L87 Difference]: Start difference. First operand 994 states and 1188 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) [2021-05-01 06:42:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:25,389 INFO L93 Difference]: Finished difference Result 1204 states and 1441 transitions. [2021-05-01 06:42:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-01 06:42:25,390 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 [2021-05-01 06:42:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:25,392 INFO L225 Difference]: With dead ends: 1204 [2021-05-01 06:42:25,392 INFO L226 Difference]: Without dead ends: 1202 [2021-05-01 06:42:25,393 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 2726.4ms TimeCoverageRelationStatistics Valid=551, Invalid=5455, Unknown=0, NotChecked=0, Total=6006 [2021-05-01 06:42:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-05-01 06:42:25,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 981. [2021-05-01 06:42:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 922 states have (on average 1.185466377440347) internal successors, (1093), 946 states have internal predecessors, (1093), 40 states have call successors, (40), 19 states have call predecessors, (40), 18 states have return successors, (38), 15 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-01 06:42:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1171 transitions. [2021-05-01 06:42:25,830 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1171 transitions. Word has length 66 [2021-05-01 06:42:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:25,830 INFO L480 AbstractCegarLoop]: Abstraction has 981 states and 1171 transitions. [2021-05-01 06:42:25,831 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) [2021-05-01 06:42:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1171 transitions. [2021-05-01 06:42:25,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-01 06:42:25,832 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:25,832 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] [2021-05-01 06:42:25,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-01 06:42:25,832 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:25,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:25,832 INFO L82 PathProgramCache]: Analyzing trace with hash -275259755, now seen corresponding path program 16 times [2021-05-01 06:42:25,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:25,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649677106] [2021-05-01 06:42:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:25,841 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:25,842 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:25,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:25,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:25,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:25,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:25,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:25,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:25,903 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:42:25,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:25,907 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-05-01 06:42:25,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:42:25,912 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-05-01 06:42:25,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:42:25,927 INFO L142 QuantifierPusher]: treesize reduction 25, result has 70.6 percent of original size [2021-05-01 06:42:25,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:42:25,968 INFO L142 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-05-01 06:42:25,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:25,974 INFO L142 QuantifierPusher]: treesize reduction 15, result has 51.6 percent of original size [2021-05-01 06:42:25,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:25,989 INFO L142 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-05-01 06:42:25,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:26,005 INFO L142 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-05-01 06:42:26,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:26,021 INFO L142 QuantifierPusher]: treesize reduction 14, result has 67.4 percent of original size [2021-05-01 06:42:26,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:42:26,057 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.9 percent of original size [2021-05-01 06:42:26,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:42:26,081 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:26,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:26,096 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 06:42:26,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:26,115 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-05-01 06:42:26,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:26,138 INFO L142 QuantifierPusher]: treesize reduction 27, result has 70.3 percent of original size [2021-05-01 06:42:26,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:42:26,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:26,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:26,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:26,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:26,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:26,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-01 06:42:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:26,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:26,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-01 06:42:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:26,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:26,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:26,265 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:26,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649677106] [2021-05-01 06:42:26,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1649677106] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:26,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:26,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 06:42:26,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277253927] [2021-05-01 06:42:26,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 06:42:26,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:26,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 06:42:26,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:42:26,265 INFO L87 Difference]: Start difference. First operand 981 states and 1171 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) [2021-05-01 06:42:28,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:28,320 INFO L93 Difference]: Finished difference Result 1215 states and 1459 transitions. [2021-05-01 06:42:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-01 06:42:28,321 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 [2021-05-01 06:42:28,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:28,323 INFO L225 Difference]: With dead ends: 1215 [2021-05-01 06:42:28,323 INFO L226 Difference]: Without dead ends: 1213 [2021-05-01 06:42:28,323 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 881.6ms TimeCoverageRelationStatistics Valid=264, Invalid=1898, Unknown=0, NotChecked=0, Total=2162 [2021-05-01 06:42:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2021-05-01 06:42:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1061. [2021-05-01 06:42:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 988 states have (on average 1.1791497975708503) internal successors, (1165), 1020 states have internal predecessors, (1165), 53 states have call successors, (53), 20 states have call predecessors, (53), 19 states have return successors, (51), 20 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-01 06:42:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1269 transitions. [2021-05-01 06:42:28,842 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1269 transitions. Word has length 68 [2021-05-01 06:42:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:28,842 INFO L480 AbstractCegarLoop]: Abstraction has 1061 states and 1269 transitions. [2021-05-01 06:42:28,842 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) [2021-05-01 06:42:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1269 transitions. [2021-05-01 06:42:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-01 06:42:28,844 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:28,844 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] [2021-05-01 06:42:28,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-01 06:42:28,844 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:28,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:28,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1734012123, now seen corresponding path program 17 times [2021-05-01 06:42:28,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:28,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970858239] [2021-05-01 06:42:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:28,848 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:28,849 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:28,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:28,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:28,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:28,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:28,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:28,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:28,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:28,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:28,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:28,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:28,914 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:42:28,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:28,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-05-01 06:42:28,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:28,939 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-05-01 06:42:28,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:28,943 INFO L142 QuantifierPusher]: treesize reduction 17, result has 46.9 percent of original size [2021-05-01 06:42:28,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:42:28,948 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:42:28,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:28,974 INFO L142 QuantifierPusher]: treesize reduction 22, result has 40.5 percent of original size [2021-05-01 06:42:28,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:42:28,980 INFO L142 QuantifierPusher]: treesize reduction 24, result has 38.5 percent of original size [2021-05-01 06:42:28,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:42:28,993 INFO L142 QuantifierPusher]: treesize reduction 39, result has 58.9 percent of original size [2021-05-01 06:42:28,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:42:29,033 INFO L142 QuantifierPusher]: treesize reduction 39, result has 65.2 percent of original size [2021-05-01 06:42:29,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:42:29,086 INFO L142 QuantifierPusher]: treesize reduction 21, result has 65.6 percent of original size [2021-05-01 06:42:29,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:42:29,116 INFO L142 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-05-01 06:42:29,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:42:29,143 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-05-01 06:42:29,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:42:29,170 INFO L142 QuantifierPusher]: treesize reduction 26, result has 73.2 percent of original size [2021-05-01 06:42:29,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:42:29,205 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:42:29,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:42:29,223 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-05-01 06:42:29,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:42:29,243 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:42:29,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:42:29,267 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-05-01 06:42:29,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:42:29,293 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:42:29,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:42:29,294 INFO L142 QuantifierPusher]: treesize reduction 25, result has 69.9 percent of original size [2021-05-01 06:42:29,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:42:29,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:29,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:42:29,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:29,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:29,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:29,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:29,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:29,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:29,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:29,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-01 06:42:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:29,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:29,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:29,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-01 06:42:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:29,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:29,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:29,412 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:29,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970858239] [2021-05-01 06:42:29,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1970858239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:29,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:29,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 06:42:29,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713643942] [2021-05-01 06:42:29,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 06:42:29,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:29,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 06:42:29,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-05-01 06:42:29,413 INFO L87 Difference]: Start difference. First operand 1061 states and 1269 transitions. Second operand has 24 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 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) [2021-05-01 06:42:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:31,002 INFO L93 Difference]: Finished difference Result 1131 states and 1349 transitions. [2021-05-01 06:42:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-01 06:42:31,003 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 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 [2021-05-01 06:42:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:31,005 INFO L225 Difference]: With dead ends: 1131 [2021-05-01 06:42:31,005 INFO L226 Difference]: Without dead ends: 1129 [2021-05-01 06:42:31,005 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 775.6ms TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 06:42:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-05-01 06:42:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1061. [2021-05-01 06:42:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 988 states have (on average 1.1791497975708503) internal successors, (1165), 1020 states have internal predecessors, (1165), 53 states have call successors, (53), 20 states have call predecessors, (53), 19 states have return successors, (51), 20 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-01 06:42:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1269 transitions. [2021-05-01 06:42:31,513 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1269 transitions. Word has length 68 [2021-05-01 06:42:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:31,513 INFO L480 AbstractCegarLoop]: Abstraction has 1061 states and 1269 transitions. [2021-05-01 06:42:31,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 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) [2021-05-01 06:42:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1269 transitions. [2021-05-01 06:42:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:31,515 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:31,515 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] [2021-05-01 06:42:31,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-01 06:42:31,515 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:31,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:31,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1737340720, now seen corresponding path program 21 times [2021-05-01 06:42:31,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:31,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117885813] [2021-05-01 06:42:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:31,520 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:31,521 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:31,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:31,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:31,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:31,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:31,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:31,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:31,646 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:42:31,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:42:31,664 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:42:31,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:31,669 INFO L142 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-05-01 06:42:31,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:31,691 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.1 percent of original size [2021-05-01 06:42:31,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:42:31,697 INFO L142 QuantifierPusher]: treesize reduction 21, result has 66.1 percent of original size [2021-05-01 06:42:31,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:42:31,716 INFO L142 QuantifierPusher]: treesize reduction 21, result has 61.1 percent of original size [2021-05-01 06:42:31,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:31,723 INFO L142 QuantifierPusher]: treesize reduction 25, result has 65.3 percent of original size [2021-05-01 06:42:31,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:31,745 INFO L142 QuantifierPusher]: treesize reduction 25, result has 60.9 percent of original size [2021-05-01 06:42:31,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:42:31,754 INFO L142 QuantifierPusher]: treesize reduction 50, result has 43.2 percent of original size [2021-05-01 06:42:31,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:42:31,776 INFO L142 QuantifierPusher]: treesize reduction 50, result has 37.5 percent of original size [2021-05-01 06:42:31,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:42:31,785 INFO L142 QuantifierPusher]: treesize reduction 46, result has 28.1 percent of original size [2021-05-01 06:42:31,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:42:31,798 INFO L142 QuantifierPusher]: treesize reduction 48, result has 30.4 percent of original size [2021-05-01 06:42:31,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:42:31,803 INFO L142 QuantifierPusher]: treesize reduction 98, result has 37.6 percent of original size [2021-05-01 06:42:31,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:42:31,837 INFO L142 QuantifierPusher]: treesize reduction 87, result has 47.0 percent of original size [2021-05-01 06:42:31,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:42:31,889 INFO L142 QuantifierPusher]: treesize reduction 87, result has 56.9 percent of original size [2021-05-01 06:42:31,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 06:42:31,964 INFO L142 QuantifierPusher]: treesize reduction 87, result has 56.7 percent of original size [2021-05-01 06:42:31,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-05-01 06:42:32,033 INFO L142 QuantifierPusher]: treesize reduction 51, result has 45.2 percent of original size [2021-05-01 06:42:32,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:42:32,063 INFO L142 QuantifierPusher]: treesize reduction 73, result has 39.2 percent of original size [2021-05-01 06:42:32,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:42:32,093 INFO L142 QuantifierPusher]: treesize reduction 65, result has 57.0 percent of original size [2021-05-01 06:42:32,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:42:32,149 INFO L142 QuantifierPusher]: treesize reduction 67, result has 45.5 percent of original size [2021-05-01 06:42:32,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:42:32,167 INFO L142 QuantifierPusher]: treesize reduction 68, result has 45.2 percent of original size [2021-05-01 06:42:32,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:42:32,205 INFO L142 QuantifierPusher]: treesize reduction 94, result has 56.9 percent of original size [2021-05-01 06:42:32,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-05-01 06:42:32,281 INFO L142 QuantifierPusher]: treesize reduction 76, result has 46.9 percent of original size [2021-05-01 06:42:32,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:42:32,302 INFO L142 QuantifierPusher]: treesize reduction 75, result has 47.2 percent of original size [2021-05-01 06:42:32,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:42:32,351 INFO L142 QuantifierPusher]: treesize reduction 75, result has 52.5 percent of original size [2021-05-01 06:42:32,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:42:32,406 INFO L142 QuantifierPusher]: treesize reduction 75, result has 47.2 percent of original size [2021-05-01 06:42:32,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:42:32,409 INFO L142 QuantifierPusher]: treesize reduction 75, result has 47.2 percent of original size [2021-05-01 06:42:32,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:42:32,456 INFO L142 QuantifierPusher]: treesize reduction 61, result has 61.9 percent of original size [2021-05-01 06:42:32,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-05-01 06:42:32,512 INFO L142 QuantifierPusher]: treesize reduction 48, result has 67.3 percent of original size [2021-05-01 06:42:32,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-05-01 06:42:32,569 INFO L142 QuantifierPusher]: treesize reduction 59, result has 65.9 percent of original size [2021-05-01 06:42:32,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-05-01 06:42:32,642 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.0 percent of original size [2021-05-01 06:42:32,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:42:32,688 INFO L142 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-05-01 06:42:32,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:32,716 INFO L142 QuantifierPusher]: treesize reduction 37, result has 49.3 percent of original size [2021-05-01 06:42:32,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:32,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:32,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:32,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:32,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:32,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:32,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:32,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:32,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:32,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:32,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:32,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:32,864 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:32,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117885813] [2021-05-01 06:42:32,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2117885813] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:32,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:32,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-01 06:42:32,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094976179] [2021-05-01 06:42:32,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-01 06:42:32,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:32,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-01 06:42:32,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2021-05-01 06:42:32,865 INFO L87 Difference]: Start difference. First operand 1061 states and 1269 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) [2021-05-01 06:42:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:36,711 INFO L93 Difference]: Finished difference Result 1484 states and 1787 transitions. [2021-05-01 06:42:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-01 06:42:36,712 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 [2021-05-01 06:42:36,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:36,715 INFO L225 Difference]: With dead ends: 1484 [2021-05-01 06:42:36,715 INFO L226 Difference]: Without dead ends: 1482 [2021-05-01 06:42:36,715 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2270.6ms TimeCoverageRelationStatistics Valid=351, Invalid=3189, Unknown=0, NotChecked=0, Total=3540 [2021-05-01 06:42:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-05-01 06:42:37,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1082. [2021-05-01 06:42:37,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1005 states have (on average 1.1771144278606964) internal successors, (1183), 1039 states have internal predecessors, (1183), 55 states have call successors, (55), 22 states have call predecessors, (55), 21 states have return successors, (53), 20 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-01 06:42:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1291 transitions. [2021-05-01 06:42:37,287 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1291 transitions. Word has length 66 [2021-05-01 06:42:37,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:37,288 INFO L480 AbstractCegarLoop]: Abstraction has 1082 states and 1291 transitions. [2021-05-01 06:42:37,288 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) [2021-05-01 06:42:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1291 transitions. [2021-05-01 06:42:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:37,289 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:37,289 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] [2021-05-01 06:42:37,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-01 06:42:37,289 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:37,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:37,289 INFO L82 PathProgramCache]: Analyzing trace with hash 688449750, now seen corresponding path program 22 times [2021-05-01 06:42:37,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:37,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932499034] [2021-05-01 06:42:37,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:37,294 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:37,295 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:37,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:37,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:37,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:37,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:37,342 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:42:37,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:37,358 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:42:37,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:37,378 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:42:37,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:37,398 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:42:37,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:37,420 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-05-01 06:42:37,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:42:37,442 INFO L142 QuantifierPusher]: treesize reduction 16, result has 15.8 percent of original size [2021-05-01 06:42:37,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:37,453 INFO L142 QuantifierPusher]: treesize reduction 17, result has 29.2 percent of original size [2021-05-01 06:42:37,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:37,458 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-05-01 06:42:37,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:37,480 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-05-01 06:42:37,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:37,500 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-05-01 06:42:37,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:37,537 INFO L142 QuantifierPusher]: treesize reduction 12, result has 68.4 percent of original size [2021-05-01 06:42:37,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:37,582 INFO L142 QuantifierPusher]: treesize reduction 12, result has 68.4 percent of original size [2021-05-01 06:42:37,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:37,618 INFO L142 QuantifierPusher]: treesize reduction 12, result has 68.4 percent of original size [2021-05-01 06:42:37,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:37,652 INFO L142 QuantifierPusher]: treesize reduction 41, result has 55.4 percent of original size [2021-05-01 06:42:37,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:42:37,693 INFO L142 QuantifierPusher]: treesize reduction 33, result has 67.3 percent of original size [2021-05-01 06:42:37,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:42:37,728 INFO L142 QuantifierPusher]: treesize reduction 33, result has 70.3 percent of original size [2021-05-01 06:42:37,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 06:42:37,773 INFO L142 QuantifierPusher]: treesize reduction 33, result has 69.7 percent of original size [2021-05-01 06:42:37,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:42:37,811 INFO L142 QuantifierPusher]: treesize reduction 10, result has 74.4 percent of original size [2021-05-01 06:42:37,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:42:37,840 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:42:37,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:42:37,871 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:42:37,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:37,898 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:37,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:37,920 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:42:37,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:37,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:37,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:37,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:37,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:37,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:37,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:38,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:38,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:38,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:38,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:38,049 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:38,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932499034] [2021-05-01 06:42:38,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1932499034] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:38,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:38,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-01 06:42:38,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886270436] [2021-05-01 06:42:38,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-01 06:42:38,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:38,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-01 06:42:38,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2021-05-01 06:42:38,050 INFO L87 Difference]: Start difference. First operand 1082 states and 1291 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) [2021-05-01 06:42:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:41,744 INFO L93 Difference]: Finished difference Result 1345 states and 1614 transitions. [2021-05-01 06:42:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-01 06:42:41,745 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 66 [2021-05-01 06:42:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:41,748 INFO L225 Difference]: With dead ends: 1345 [2021-05-01 06:42:41,748 INFO L226 Difference]: Without dead ends: 1343 [2021-05-01 06:42:41,748 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 1912.8ms TimeCoverageRelationStatistics Valid=572, Invalid=3718, Unknown=0, NotChecked=0, Total=4290 [2021-05-01 06:42:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-05-01 06:42:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1094. [2021-05-01 06:42:42,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1015 states have (on average 1.1773399014778325) internal successors, (1195), 1050 states have internal predecessors, (1195), 56 states have call successors, (56), 23 states have call predecessors, (56), 22 states have return successors, (54), 20 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-01 06:42:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1305 transitions. [2021-05-01 06:42:42,313 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1305 transitions. Word has length 66 [2021-05-01 06:42:42,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:42,313 INFO L480 AbstractCegarLoop]: Abstraction has 1094 states and 1305 transitions. [2021-05-01 06:42:42,313 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) [2021-05-01 06:42:42,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1305 transitions. [2021-05-01 06:42:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:42,315 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:42,315 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] [2021-05-01 06:42:42,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-01 06:42:42,315 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1136950192, now seen corresponding path program 23 times [2021-05-01 06:42:42,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:42,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758199137] [2021-05-01 06:42:42,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:42,319 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:42,320 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:42,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:42,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:42,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:42,380 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-05-01 06:42:42,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:42,395 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-05-01 06:42:42,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:42,411 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-05-01 06:42:42,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:42,429 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-05-01 06:42:42,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:42:42,449 INFO L142 QuantifierPusher]: treesize reduction 16, result has 52.9 percent of original size [2021-05-01 06:42:42,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:42:42,468 INFO L142 QuantifierPusher]: treesize reduction 23, result has 11.5 percent of original size [2021-05-01 06:42:42,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:42,477 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-05-01 06:42:42,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:42,481 INFO L142 QuantifierPusher]: treesize reduction 15, result has 66.7 percent of original size [2021-05-01 06:42:42,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:42:42,487 INFO L142 QuantifierPusher]: treesize reduction 15, result has 66.7 percent of original size [2021-05-01 06:42:42,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:42:42,495 INFO L142 QuantifierPusher]: treesize reduction 15, result has 70.0 percent of original size [2021-05-01 06:42:42,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:42,520 INFO L142 QuantifierPusher]: treesize reduction 14, result has 71.4 percent of original size [2021-05-01 06:42:42,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:42,547 INFO L142 QuantifierPusher]: treesize reduction 51, result has 51.9 percent of original size [2021-05-01 06:42:42,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:42:42,587 INFO L142 QuantifierPusher]: treesize reduction 43, result has 64.5 percent of original size [2021-05-01 06:42:42,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 06:42:42,648 INFO L142 QuantifierPusher]: treesize reduction 43, result has 67.4 percent of original size [2021-05-01 06:42:42,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-05-01 06:42:42,705 INFO L142 QuantifierPusher]: treesize reduction 43, result has 66.9 percent of original size [2021-05-01 06:42:42,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:42:42,759 INFO L142 QuantifierPusher]: treesize reduction 20, result has 65.5 percent of original size [2021-05-01 06:42:42,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:42:42,800 INFO L142 QuantifierPusher]: treesize reduction 20, result has 64.9 percent of original size [2021-05-01 06:42:42,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:42:42,834 INFO L142 QuantifierPusher]: treesize reduction 24, result has 71.1 percent of original size [2021-05-01 06:42:42,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:42:42,876 INFO L142 QuantifierPusher]: treesize reduction 24, result has 64.2 percent of original size [2021-05-01 06:42:42,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:42:42,898 INFO L142 QuantifierPusher]: treesize reduction 26, result has 61.8 percent of original size [2021-05-01 06:42:42,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:42:42,938 INFO L142 QuantifierPusher]: treesize reduction 24, result has 72.4 percent of original size [2021-05-01 06:42:42,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:42:42,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:42:42,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:43,023 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:43,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:43,052 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-05-01 06:42:43,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:43,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:43,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:43,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:43,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:43,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:43,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:43,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:43,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:43,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:43,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:43,192 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:43,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758199137] [2021-05-01 06:42:43,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [758199137] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:43,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:43,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-01 06:42:43,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930937144] [2021-05-01 06:42:43,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-01 06:42:43,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:43,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-01 06:42:43,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2021-05-01 06:42:43,193 INFO L87 Difference]: Start difference. First operand 1094 states and 1305 transitions. Second operand has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 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) [2021-05-01 06:42:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:47,011 INFO L93 Difference]: Finished difference Result 1363 states and 1636 transitions. [2021-05-01 06:42:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-01 06:42:47,012 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 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 [2021-05-01 06:42:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:47,014 INFO L225 Difference]: With dead ends: 1363 [2021-05-01 06:42:47,014 INFO L226 Difference]: Without dead ends: 1361 [2021-05-01 06:42:47,014 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 2149.0ms TimeCoverageRelationStatistics Valid=440, Invalid=2982, Unknown=0, NotChecked=0, Total=3422 [2021-05-01 06:42:47,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2021-05-01 06:42:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1113. [2021-05-01 06:42:47,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1032 states have (on average 1.177325581395349) internal successors, (1215), 1068 states have internal predecessors, (1215), 57 states have call successors, (57), 24 states have call predecessors, (57), 23 states have return successors, (55), 20 states have call predecessors, (55), 55 states have call successors, (55) [2021-05-01 06:42:47,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1327 transitions. [2021-05-01 06:42:47,561 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1327 transitions. Word has length 66 [2021-05-01 06:42:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:47,561 INFO L480 AbstractCegarLoop]: Abstraction has 1113 states and 1327 transitions. [2021-05-01 06:42:47,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 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) [2021-05-01 06:42:47,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1327 transitions. [2021-05-01 06:42:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:47,562 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:47,562 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] [2021-05-01 06:42:47,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-01 06:42:47,563 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:47,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2061955934, now seen corresponding path program 24 times [2021-05-01 06:42:47,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:47,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595075178] [2021-05-01 06:42:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:47,567 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:47,568 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:47,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:47,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:47,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:47,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:47,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:47,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:47,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:47,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:47,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:47,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:42:47,655 INFO L142 QuantifierPusher]: treesize reduction 33, result has 32.7 percent of original size [2021-05-01 06:42:47,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:47,671 INFO L142 QuantifierPusher]: treesize reduction 24, result has 40.0 percent of original size [2021-05-01 06:42:47,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:42:47,689 INFO L142 QuantifierPusher]: treesize reduction 29, result has 9.4 percent of original size [2021-05-01 06:42:47,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:47,698 INFO L142 QuantifierPusher]: treesize reduction 30, result has 18.9 percent of original size [2021-05-01 06:42:47,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:47,702 INFO L142 QuantifierPusher]: treesize reduction 20, result has 63.6 percent of original size [2021-05-01 06:42:47,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:47,708 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.1 percent of original size [2021-05-01 06:42:47,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:42:47,732 INFO L142 QuantifierPusher]: treesize reduction 52, result has 59.7 percent of original size [2021-05-01 06:42:47,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:42:47,774 INFO L142 QuantifierPusher]: treesize reduction 41, result has 69.6 percent of original size [2021-05-01 06:42:47,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 06:42:47,825 INFO L142 QuantifierPusher]: treesize reduction 41, result has 71.7 percent of original size [2021-05-01 06:42:47,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 06:42:47,887 INFO L142 QuantifierPusher]: treesize reduction 41, result has 71.3 percent of original size [2021-05-01 06:42:47,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-05-01 06:42:47,941 INFO L142 QuantifierPusher]: treesize reduction 22, result has 68.6 percent of original size [2021-05-01 06:42:47,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:42:47,976 INFO L142 QuantifierPusher]: treesize reduction 24, result has 65.7 percent of original size [2021-05-01 06:42:47,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:42:48,011 INFO L142 QuantifierPusher]: treesize reduction 58, result has 65.3 percent of original size [2021-05-01 06:42:48,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-05-01 06:42:48,082 INFO L142 QuantifierPusher]: treesize reduction 30, result has 60.5 percent of original size [2021-05-01 06:42:48,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:42:48,083 INFO L142 QuantifierPusher]: treesize reduction 31, result has 58.1 percent of original size [2021-05-01 06:42:48,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:42:48,125 INFO L142 QuantifierPusher]: treesize reduction 35, result has 62.8 percent of original size [2021-05-01 06:42:48,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:42:48,173 INFO L142 QuantifierPusher]: treesize reduction 35, result has 55.1 percent of original size [2021-05-01 06:42:48,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:42:48,174 INFO L142 QuantifierPusher]: treesize reduction 36, result has 54.4 percent of original size [2021-05-01 06:42:48,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:42:48,212 INFO L142 QuantifierPusher]: treesize reduction 29, result has 73.1 percent of original size [2021-05-01 06:42:48,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:42:48,262 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.1 percent of original size [2021-05-01 06:42:48,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:42:48,300 INFO L142 QuantifierPusher]: treesize reduction 40, result has 64.6 percent of original size [2021-05-01 06:42:48,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:42:48,364 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-05-01 06:42:48,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:48,394 INFO L142 QuantifierPusher]: treesize reduction 22, result has 62.1 percent of original size [2021-05-01 06:42:48,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:48,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:48,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:48,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:48,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:48,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:48,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:48,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:48,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:48,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:48,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:48,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:48,549 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:48,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595075178] [2021-05-01 06:42:48,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [595075178] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:48,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:48,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-01 06:42:48,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631835357] [2021-05-01 06:42:48,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-01 06:42:48,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:48,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-01 06:42:48,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2021-05-01 06:42:48,550 INFO L87 Difference]: Start difference. First operand 1113 states and 1327 transitions. Second operand has 29 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 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) [2021-05-01 06:42:53,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:53,109 INFO L93 Difference]: Finished difference Result 1461 states and 1755 transitions. [2021-05-01 06:42:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-01 06:42:53,110 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 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 [2021-05-01 06:42:53,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:53,113 INFO L225 Difference]: With dead ends: 1461 [2021-05-01 06:42:53,113 INFO L226 Difference]: Without dead ends: 1459 [2021-05-01 06:42:53,113 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 2076.4ms TimeCoverageRelationStatistics Valid=361, Invalid=3179, Unknown=0, NotChecked=0, Total=3540 [2021-05-01 06:42:53,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-05-01 06:42:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1163. [2021-05-01 06:42:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1078 states have (on average 1.1799628942486085) internal successors, (1272), 1116 states have internal predecessors, (1272), 59 states have call successors, (59), 26 states have call predecessors, (59), 25 states have return successors, (57), 20 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-01 06:42:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1388 transitions. [2021-05-01 06:42:53,713 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1388 transitions. Word has length 66 [2021-05-01 06:42:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:53,714 INFO L480 AbstractCegarLoop]: Abstraction has 1163 states and 1388 transitions. [2021-05-01 06:42:53,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 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) [2021-05-01 06:42:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1388 transitions. [2021-05-01 06:42:53,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:53,715 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:53,715 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] [2021-05-01 06:42:53,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-01 06:42:53,716 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:53,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:53,716 INFO L82 PathProgramCache]: Analyzing trace with hash 146305884, now seen corresponding path program 25 times [2021-05-01 06:42:53,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:53,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375297157] [2021-05-01 06:42:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:53,724 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:53,725 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:53,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:53,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:53,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:53,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:53,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:53,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:53,791 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:42:53,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:42:53,814 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:42:53,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:53,821 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-05-01 06:42:53,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:53,841 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:42:53,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:42:53,849 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-05-01 06:42:53,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:53,870 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:42:53,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:42:53,879 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.8 percent of original size [2021-05-01 06:42:53,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:53,902 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:42:53,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:42:53,912 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:42:53,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:53,931 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 06:42:53,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:42:53,945 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-05-01 06:42:53,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:42:53,951 INFO L142 QuantifierPusher]: treesize reduction 30, result has 54.5 percent of original size [2021-05-01 06:42:53,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:53,992 INFO L142 QuantifierPusher]: treesize reduction 25, result has 56.9 percent of original size [2021-05-01 06:42:53,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:54,032 INFO L142 QuantifierPusher]: treesize reduction 27, result has 51.8 percent of original size [2021-05-01 06:42:54,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:42:54,059 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 06:42:54,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:42:54,065 INFO L142 QuantifierPusher]: treesize reduction 22, result has 59.3 percent of original size [2021-05-01 06:42:54,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:42:54,104 INFO L142 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-05-01 06:42:54,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:42:54,147 INFO L142 QuantifierPusher]: treesize reduction 47, result has 51.0 percent of original size [2021-05-01 06:42:54,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:42:54,195 INFO L142 QuantifierPusher]: treesize reduction 39, result has 63.6 percent of original size [2021-05-01 06:42:54,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:42:54,247 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.9 percent of original size [2021-05-01 06:42:54,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:42:54,306 INFO L142 QuantifierPusher]: treesize reduction 39, result has 66.1 percent of original size [2021-05-01 06:42:54,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:42:54,359 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-05-01 06:42:54,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:42:54,393 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.2 percent of original size [2021-05-01 06:42:54,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:42:54,440 INFO L142 QuantifierPusher]: treesize reduction 15, result has 85.3 percent of original size [2021-05-01 06:42:54,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:42:54,487 INFO L142 QuantifierPusher]: treesize reduction 14, result has 79.1 percent of original size [2021-05-01 06:42:54,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:42:54,531 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:42:54,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:54,569 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:42:54,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:54,611 INFO L142 QuantifierPusher]: treesize reduction 10, result has 88.9 percent of original size [2021-05-01 06:42:54,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 06:42:54,666 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.9 percent of original size [2021-05-01 06:42:54,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:42:54,714 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:42:54,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:54,715 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:42:54,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:54,759 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:42:54,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:42:54,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:42:54,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:42:54,818 INFO L142 QuantifierPusher]: treesize reduction 19, result has 65.5 percent of original size [2021-05-01 06:42:54,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:54,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:54,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:42:54,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:54,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:54,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:54,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:42:54,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:54,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:54,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:42:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:54,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:54,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:42:54,974 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:42:54,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375297157] [2021-05-01 06:42:54,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1375297157] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:42:54,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:42:54,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-01 06:42:54,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419486906] [2021-05-01 06:42:54,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-01 06:42:54,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:42:54,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-01 06:42:54,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 06:42:54,975 INFO L87 Difference]: Start difference. First operand 1163 states and 1388 transitions. Second operand has 34 states, 33 states have (on average 1.878787878787879) internal successors, (62), 32 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) [2021-05-01 06:42:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:42:58,466 INFO L93 Difference]: Finished difference Result 1278 states and 1521 transitions. [2021-05-01 06:42:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-01 06:42:58,469 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.878787878787879) internal successors, (62), 32 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 [2021-05-01 06:42:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:42:58,472 INFO L225 Difference]: With dead ends: 1278 [2021-05-01 06:42:58,472 INFO L226 Difference]: Without dead ends: 1276 [2021-05-01 06:42:58,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 2342.8ms TimeCoverageRelationStatistics Valid=553, Invalid=3737, Unknown=0, NotChecked=0, Total=4290 [2021-05-01 06:42:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-05-01 06:42:59,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1144. [2021-05-01 06:42:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1060 states have (on average 1.179245283018868) internal successors, (1250), 1097 states have internal predecessors, (1250), 58 states have call successors, (58), 26 states have call predecessors, (58), 25 states have return successors, (56), 20 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-01 06:42:59,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1364 transitions. [2021-05-01 06:42:59,077 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1364 transitions. Word has length 66 [2021-05-01 06:42:59,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:42:59,077 INFO L480 AbstractCegarLoop]: Abstraction has 1144 states and 1364 transitions. [2021-05-01 06:42:59,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.878787878787879) internal successors, (62), 32 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) [2021-05-01 06:42:59,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1364 transitions. [2021-05-01 06:42:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:42:59,079 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:42:59,079 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] [2021-05-01 06:42:59,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-01 06:42:59,079 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:42:59,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:42:59,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1811130830, now seen corresponding path program 17 times [2021-05-01 06:42:59,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:42:59,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634940121] [2021-05-01 06:42:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:42:59,084 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:42:59,084 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:42:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:42:59,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:59,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:42:59,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:42:59,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:42:59,150 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-05-01 06:42:59,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:59,166 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-05-01 06:42:59,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:42:59,184 INFO L142 QuantifierPusher]: treesize reduction 67, result has 35.0 percent of original size [2021-05-01 06:42:59,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:42:59,203 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-05-01 06:42:59,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:59,225 INFO L142 QuantifierPusher]: treesize reduction 18, result has 65.4 percent of original size [2021-05-01 06:42:59,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:42:59,248 INFO L142 QuantifierPusher]: treesize reduction 16, result has 55.6 percent of original size [2021-05-01 06:42:59,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:42:59,265 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-05-01 06:42:59,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:42:59,270 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-05-01 06:42:59,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:42:59,277 INFO L142 QuantifierPusher]: treesize reduction 18, result has 70.5 percent of original size [2021-05-01 06:42:59,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:42:59,308 INFO L142 QuantifierPusher]: treesize reduction 73, result has 47.1 percent of original size [2021-05-01 06:42:59,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:42:59,359 INFO L142 QuantifierPusher]: treesize reduction 74, result has 50.0 percent of original size [2021-05-01 06:42:59,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:42:59,410 INFO L142 QuantifierPusher]: treesize reduction 74, result has 54.0 percent of original size [2021-05-01 06:42:59,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:42:59,476 INFO L142 QuantifierPusher]: treesize reduction 26, result has 81.4 percent of original size [2021-05-01 06:42:59,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-05-01 06:42:59,549 INFO L142 QuantifierPusher]: treesize reduction 33, result has 78.0 percent of original size [2021-05-01 06:42:59,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 06:42:59,634 INFO L142 QuantifierPusher]: treesize reduction 33, result has 77.6 percent of original size [2021-05-01 06:42:59,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-05-01 06:42:59,714 INFO L142 QuantifierPusher]: treesize reduction 21, result has 81.3 percent of original size [2021-05-01 06:42:59,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 06:42:59,778 INFO L142 QuantifierPusher]: treesize reduction 21, result has 81.3 percent of original size [2021-05-01 06:42:59,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 06:42:59,852 INFO L142 QuantifierPusher]: treesize reduction 38, result has 81.3 percent of original size [2021-05-01 06:42:59,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 06:42:59,946 INFO L142 QuantifierPusher]: treesize reduction 38, result has 81.2 percent of original size [2021-05-01 06:42:59,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-05-01 06:43:00,044 INFO L142 QuantifierPusher]: treesize reduction 38, result has 80.9 percent of original size [2021-05-01 06:43:00,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-05-01 06:43:00,141 INFO L142 QuantifierPusher]: treesize reduction 8, result has 91.8 percent of original size [2021-05-01 06:43:00,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 06:43:00,201 INFO L142 QuantifierPusher]: treesize reduction 8, result has 91.8 percent of original size [2021-05-01 06:43:00,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 06:43:00,265 INFO L142 QuantifierPusher]: treesize reduction 8, result has 93.8 percent of original size [2021-05-01 06:43:00,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-05-01 06:43:00,330 INFO L142 QuantifierPusher]: treesize reduction 8, result has 91.8 percent of original size [2021-05-01 06:43:00,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 06:43:00,332 INFO L142 QuantifierPusher]: treesize reduction 8, result has 91.7 percent of original size [2021-05-01 06:43:00,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:43:00,392 INFO L142 QuantifierPusher]: treesize reduction 8, result has 94.4 percent of original size [2021-05-01 06:43:00,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-05-01 06:43:00,458 INFO L142 QuantifierPusher]: treesize reduction 40, result has 45.2 percent of original size [2021-05-01 06:43:00,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:43:00,498 INFO L142 QuantifierPusher]: treesize reduction 24, result has 41.5 percent of original size [2021-05-01 06:43:00,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:43:00,534 INFO L142 QuantifierPusher]: treesize reduction 56, result has 39.1 percent of original size [2021-05-01 06:43:00,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:43:00,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:00,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:00,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:00,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:00,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:00,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:00,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:00,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:43:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:00,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:00,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:43:00,695 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:43:00,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634940121] [2021-05-01 06:43:00,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [634940121] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:43:00,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:43:00,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-01 06:43:00,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740877708] [2021-05-01 06:43:00,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-01 06:43:00,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:43:00,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-01 06:43:00,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 06:43:00,696 INFO L87 Difference]: Start difference. First operand 1144 states and 1364 transitions. Second operand has 33 states, 32 states have (on average 1.9375) internal successors, (62), 31 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) [2021-05-01 06:43:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:43:05,326 INFO L93 Difference]: Finished difference Result 1448 states and 1739 transitions. [2021-05-01 06:43:05,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-01 06:43:05,328 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.9375) internal successors, (62), 31 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 [2021-05-01 06:43:05,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:43:05,332 INFO L225 Difference]: With dead ends: 1448 [2021-05-01 06:43:05,332 INFO L226 Difference]: Without dead ends: 1446 [2021-05-01 06:43:05,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 3302.3ms TimeCoverageRelationStatistics Valid=565, Invalid=3857, Unknown=0, NotChecked=0, Total=4422 [2021-05-01 06:43:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-05-01 06:43:05,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1169. [2021-05-01 06:43:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1084 states have (on average 1.1808118081180812) internal successors, (1280), 1121 states have internal predecessors, (1280), 58 states have call successors, (58), 27 states have call predecessors, (58), 26 states have return successors, (56), 20 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-01 06:43:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1394 transitions. [2021-05-01 06:43:05,954 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1394 transitions. Word has length 66 [2021-05-01 06:43:05,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:43:05,954 INFO L480 AbstractCegarLoop]: Abstraction has 1169 states and 1394 transitions. [2021-05-01 06:43:05,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 1.9375) internal successors, (62), 31 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) [2021-05-01 06:43:05,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1394 transitions. [2021-05-01 06:43:05,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:43:05,955 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:43:05,956 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] [2021-05-01 06:43:05,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-01 06:43:05,956 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:43:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:43:05,956 INFO L82 PathProgramCache]: Analyzing trace with hash -337327382, now seen corresponding path program 18 times [2021-05-01 06:43:05,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:43:05,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546930865] [2021-05-01 06:43:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:43:05,961 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:43:05,961 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:43:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:06,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:06,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:06,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:06,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:06,019 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-05-01 06:43:06,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:43:06,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:06,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:06,036 INFO L142 QuantifierPusher]: treesize reduction 23, result has 34.3 percent of original size [2021-05-01 06:43:06,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:43:06,042 INFO L142 QuantifierPusher]: treesize reduction 28, result has 42.9 percent of original size [2021-05-01 06:43:06,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:43:06,062 INFO L142 QuantifierPusher]: treesize reduction 28, result has 49.1 percent of original size [2021-05-01 06:43:06,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:43:06,071 INFO L142 QuantifierPusher]: treesize reduction 28, result has 58.8 percent of original size [2021-05-01 06:43:06,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:06,113 INFO L142 QuantifierPusher]: treesize reduction 48, result has 45.5 percent of original size [2021-05-01 06:43:06,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:06,147 INFO L142 QuantifierPusher]: treesize reduction 29, result has 73.9 percent of original size [2021-05-01 06:43:06,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:43:06,196 INFO L142 QuantifierPusher]: treesize reduction 29, result has 73.1 percent of original size [2021-05-01 06:43:06,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:43:06,233 INFO L142 QuantifierPusher]: treesize reduction 29, result has 58.0 percent of original size [2021-05-01 06:43:06,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:06,257 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.0 percent of original size [2021-05-01 06:43:06,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:06,282 INFO L142 QuantifierPusher]: treesize reduction 14, result has 80.3 percent of original size [2021-05-01 06:43:06,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:43:06,313 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:06,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:06,340 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:06,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:06,368 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.8 percent of original size [2021-05-01 06:43:06,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:43:06,402 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:06,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:06,403 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:06,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:06,434 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.8 percent of original size [2021-05-01 06:43:06,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:43:06,471 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:06,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:06,472 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:06,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:06,507 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-05-01 06:43:06,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:43:06,548 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-05-01 06:43:06,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:43:06,587 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:43:06,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:43:06,617 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:43:06,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:43:06,643 INFO L142 QuantifierPusher]: treesize reduction 37, result has 50.7 percent of original size [2021-05-01 06:43:06,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:43:06,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:06,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:06,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:06,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:06,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:06,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:06,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:06,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:43:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:06,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:06,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:43:06,777 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:43:06,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546930865] [2021-05-01 06:43:06,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [546930865] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:43:06,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:43:06,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-01 06:43:06,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700500999] [2021-05-01 06:43:06,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-01 06:43:06,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:43:06,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-01 06:43:06,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2021-05-01 06:43:06,778 INFO L87 Difference]: Start difference. First operand 1169 states and 1394 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) [2021-05-01 06:43:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:43:09,099 INFO L93 Difference]: Finished difference Result 1288 states and 1532 transitions. [2021-05-01 06:43:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-01 06:43:09,100 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 [2021-05-01 06:43:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:43:09,102 INFO L225 Difference]: With dead ends: 1288 [2021-05-01 06:43:09,102 INFO L226 Difference]: Without dead ends: 1286 [2021-05-01 06:43:09,102 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 1445.3ms TimeCoverageRelationStatistics Valid=366, Invalid=1890, Unknown=0, NotChecked=0, Total=2256 [2021-05-01 06:43:09,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-05-01 06:43:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1188. [2021-05-01 06:43:09,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1102 states have (on average 1.1823956442831216) internal successors, (1303), 1139 states have internal predecessors, (1303), 58 states have call successors, (58), 28 states have call predecessors, (58), 27 states have return successors, (56), 20 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-01 06:43:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1417 transitions. [2021-05-01 06:43:09,696 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1417 transitions. Word has length 66 [2021-05-01 06:43:09,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:43:09,696 INFO L480 AbstractCegarLoop]: Abstraction has 1188 states and 1417 transitions. [2021-05-01 06:43:09,697 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) [2021-05-01 06:43:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1417 transitions. [2021-05-01 06:43:09,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:43:09,698 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:43:09,698 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] [2021-05-01 06:43:09,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-01 06:43:09,698 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:43:09,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:43:09,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1584291114, now seen corresponding path program 19 times [2021-05-01 06:43:09,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:43:09,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432629930] [2021-05-01 06:43:09,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:43:09,704 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:43:09,705 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:43:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:09,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:09,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:09,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:09,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:09,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:09,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:43:09,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:09,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:09,786 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:43:09,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:09,792 INFO L142 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size [2021-05-01 06:43:09,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:43:09,819 INFO L142 QuantifierPusher]: treesize reduction 27, result has 68.6 percent of original size [2021-05-01 06:43:09,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:43:09,871 INFO L142 QuantifierPusher]: treesize reduction 28, result has 72.0 percent of original size [2021-05-01 06:43:09,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:43:09,929 INFO L142 QuantifierPusher]: treesize reduction 11, result has 79.6 percent of original size [2021-05-01 06:43:09,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:43:09,962 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.7 percent of original size [2021-05-01 06:43:09,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:43:10,001 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.4 percent of original size [2021-05-01 06:43:10,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:43:10,013 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.7 percent of original size [2021-05-01 06:43:10,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:43:10,041 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.0 percent of original size [2021-05-01 06:43:10,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:10,066 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.6 percent of original size [2021-05-01 06:43:10,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:43:10,099 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:43:10,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:10,100 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:43:10,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:10,126 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.3 percent of original size [2021-05-01 06:43:10,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:43:10,160 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:43:10,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:10,161 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:43:10,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:10,193 INFO L142 QuantifierPusher]: treesize reduction 20, result has 82.3 percent of original size [2021-05-01 06:43:10,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:43:10,235 INFO L142 QuantifierPusher]: treesize reduction 15, result has 86.1 percent of original size [2021-05-01 06:43:10,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:43:10,278 INFO L142 QuantifierPusher]: treesize reduction 14, result has 80.3 percent of original size [2021-05-01 06:43:10,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:43:10,318 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:10,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:10,354 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:10,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:10,391 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:43:10,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:43:10,433 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:43:10,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:43:10,461 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-05-01 06:43:10,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:43:10,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:10,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:10,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:10,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:10,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:10,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:10,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:10,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:43:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:10,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:10,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:43:10,603 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:43:10,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432629930] [2021-05-01 06:43:10,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [432629930] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:43:10,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:43:10,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-01 06:43:10,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613774684] [2021-05-01 06:43:10,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-01 06:43:10,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:43:10,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-01 06:43:10,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2021-05-01 06:43:10,604 INFO L87 Difference]: Start difference. First operand 1188 states and 1417 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) [2021-05-01 06:43:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:43:13,714 INFO L93 Difference]: Finished difference Result 1316 states and 1566 transitions. [2021-05-01 06:43:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-01 06:43:13,716 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 [2021-05-01 06:43:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:43:13,718 INFO L225 Difference]: With dead ends: 1316 [2021-05-01 06:43:13,718 INFO L226 Difference]: Without dead ends: 1314 [2021-05-01 06:43:13,719 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 1713.7ms TimeCoverageRelationStatistics Valid=330, Invalid=2322, Unknown=0, NotChecked=0, Total=2652 [2021-05-01 06:43:13,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-05-01 06:43:14,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1188. [2021-05-01 06:43:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1102 states have (on average 1.1823956442831216) internal successors, (1303), 1139 states have internal predecessors, (1303), 58 states have call successors, (58), 28 states have call predecessors, (58), 27 states have return successors, (56), 20 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-01 06:43:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1417 transitions. [2021-05-01 06:43:14,346 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1417 transitions. Word has length 66 [2021-05-01 06:43:14,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:43:14,346 INFO L480 AbstractCegarLoop]: Abstraction has 1188 states and 1417 transitions. [2021-05-01 06:43:14,346 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) [2021-05-01 06:43:14,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1417 transitions. [2021-05-01 06:43:14,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:43:14,348 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:43:14,348 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] [2021-05-01 06:43:14,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-01 06:43:14,348 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:43:14,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:43:14,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1237330082, now seen corresponding path program 20 times [2021-05-01 06:43:14,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:43:14,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272915638] [2021-05-01 06:43:14,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:43:14,353 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:43:14,353 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:43:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:14,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:14,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:14,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:14,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:14,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:14,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:43:14,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:14,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:14,441 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:43:14,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:14,448 INFO L142 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size [2021-05-01 06:43:14,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:43:14,476 INFO L142 QuantifierPusher]: treesize reduction 27, result has 68.6 percent of original size [2021-05-01 06:43:14,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:43:14,525 INFO L142 QuantifierPusher]: treesize reduction 28, result has 72.0 percent of original size [2021-05-01 06:43:14,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:43:14,594 INFO L142 QuantifierPusher]: treesize reduction 11, result has 79.6 percent of original size [2021-05-01 06:43:14,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:43:14,628 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.7 percent of original size [2021-05-01 06:43:14,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:43:14,672 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.4 percent of original size [2021-05-01 06:43:14,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:43:14,685 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.7 percent of original size [2021-05-01 06:43:14,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:43:14,716 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.0 percent of original size [2021-05-01 06:43:14,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:14,742 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.6 percent of original size [2021-05-01 06:43:14,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:43:14,775 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:43:14,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:14,777 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:43:14,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:14,806 INFO L142 QuantifierPusher]: treesize reduction 15, result has 86.1 percent of original size [2021-05-01 06:43:14,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:43:14,847 INFO L142 QuantifierPusher]: treesize reduction 14, result has 80.3 percent of original size [2021-05-01 06:43:14,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:43:14,885 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:14,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:14,918 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:14,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:14,953 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.8 percent of original size [2021-05-01 06:43:14,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:43:14,995 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:14,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:14,996 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:14,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:15,036 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-05-01 06:43:15,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:43:15,085 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:43:15,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:43:15,122 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:43:15,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:43:15,155 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-05-01 06:43:15,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:43:15,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:15,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:15,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:15,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:15,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:15,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:15,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:15,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:43:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:15,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:15,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:43:15,314 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:43:15,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272915638] [2021-05-01 06:43:15,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [272915638] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:43:15,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:43:15,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-01 06:43:15,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842652939] [2021-05-01 06:43:15,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-01 06:43:15,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:43:15,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-01 06:43:15,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2021-05-01 06:43:15,315 INFO L87 Difference]: Start difference. First operand 1188 states and 1417 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) [2021-05-01 06:43:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:43:17,881 INFO L93 Difference]: Finished difference Result 1307 states and 1551 transitions. [2021-05-01 06:43:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-01 06:43:17,882 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 [2021-05-01 06:43:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:43:17,884 INFO L225 Difference]: With dead ends: 1307 [2021-05-01 06:43:17,884 INFO L226 Difference]: Without dead ends: 1305 [2021-05-01 06:43:17,884 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 1539.4ms TimeCoverageRelationStatistics Valid=282, Invalid=1788, Unknown=0, NotChecked=0, Total=2070 [2021-05-01 06:43:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-05-01 06:43:18,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1167. [2021-05-01 06:43:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1083 states have (on average 1.1809787626962143) internal successors, (1279), 1118 states have internal predecessors, (1279), 56 states have call successors, (56), 28 states have call predecessors, (56), 27 states have return successors, (54), 20 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-01 06:43:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1389 transitions. [2021-05-01 06:43:18,495 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1389 transitions. Word has length 66 [2021-05-01 06:43:18,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:43:18,496 INFO L480 AbstractCegarLoop]: Abstraction has 1167 states and 1389 transitions. [2021-05-01 06:43:18,496 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) [2021-05-01 06:43:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1389 transitions. [2021-05-01 06:43:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 06:43:18,497 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:43:18,497 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] [2021-05-01 06:43:18,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-01 06:43:18,497 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:43:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:43:18,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1870934436, now seen corresponding path program 21 times [2021-05-01 06:43:18,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:43:18,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546346210] [2021-05-01 06:43:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:43:18,502 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:43:18,503 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:43:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:18,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:18,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:18,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:18,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:18,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:18,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:43:18,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:18,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:18,590 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:43:18,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:18,595 INFO L142 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size [2021-05-01 06:43:18,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:43:18,621 INFO L142 QuantifierPusher]: treesize reduction 27, result has 68.6 percent of original size [2021-05-01 06:43:18,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:43:18,674 INFO L142 QuantifierPusher]: treesize reduction 28, result has 71.7 percent of original size [2021-05-01 06:43:18,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:43:18,740 INFO L142 QuantifierPusher]: treesize reduction 11, result has 79.6 percent of original size [2021-05-01 06:43:18,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:43:18,778 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.7 percent of original size [2021-05-01 06:43:18,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:43:18,819 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.4 percent of original size [2021-05-01 06:43:18,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:43:18,831 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.7 percent of original size [2021-05-01 06:43:18,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:43:18,860 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.0 percent of original size [2021-05-01 06:43:18,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:18,884 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.6 percent of original size [2021-05-01 06:43:18,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:43:18,919 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:43:18,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:18,920 INFO L142 QuantifierPusher]: treesize reduction 20, result has 69.2 percent of original size [2021-05-01 06:43:18,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:18,947 INFO L142 QuantifierPusher]: treesize reduction 15, result has 86.1 percent of original size [2021-05-01 06:43:18,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:43:18,985 INFO L142 QuantifierPusher]: treesize reduction 14, result has 80.3 percent of original size [2021-05-01 06:43:18,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:43:19,021 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:19,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:19,053 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:19,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:19,088 INFO L142 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-05-01 06:43:19,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:43:19,132 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.8 percent of original size [2021-05-01 06:43:19,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:43:19,174 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:19,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:19,175 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:43:19,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:19,215 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:43:19,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:43:19,250 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:43:19,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:43:19,275 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-05-01 06:43:19,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:43:19,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:19,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:19,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:19,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:19,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:19,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:19,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:19,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:19,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:43:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:19,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:19,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:43:19,415 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:43:19,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546346210] [2021-05-01 06:43:19,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [546346210] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:43:19,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:43:19,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-01 06:43:19,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045021042] [2021-05-01 06:43:19,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-01 06:43:19,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:43:19,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-01 06:43:19,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2021-05-01 06:43:19,416 INFO L87 Difference]: Start difference. First operand 1167 states and 1389 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) [2021-05-01 06:43:21,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:43:21,983 INFO L93 Difference]: Finished difference Result 1317 states and 1566 transitions. [2021-05-01 06:43:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-01 06:43:21,985 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 [2021-05-01 06:43:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:43:21,987 INFO L225 Difference]: With dead ends: 1317 [2021-05-01 06:43:21,987 INFO L226 Difference]: Without dead ends: 1315 [2021-05-01 06:43:21,988 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1514.5ms TimeCoverageRelationStatistics Valid=284, Invalid=1786, Unknown=0, NotChecked=0, Total=2070 [2021-05-01 06:43:21,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-05-01 06:43:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1158. [2021-05-01 06:43:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1075 states have (on average 1.1813953488372093) internal successors, (1270), 1109 states have internal predecessors, (1270), 55 states have call successors, (55), 28 states have call predecessors, (55), 27 states have return successors, (53), 20 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-01 06:43:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1378 transitions. [2021-05-01 06:43:22,603 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1378 transitions. Word has length 66 [2021-05-01 06:43:22,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:43:22,603 INFO L480 AbstractCegarLoop]: Abstraction has 1158 states and 1378 transitions. [2021-05-01 06:43:22,604 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) [2021-05-01 06:43:22,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1378 transitions. [2021-05-01 06:43:22,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:43:22,605 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:43:22,605 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] [2021-05-01 06:43:22,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-01 06:43:22,605 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:43:22,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:43:22,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1360968119, now seen corresponding path program 11 times [2021-05-01 06:43:22,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:43:22,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857801930] [2021-05-01 06:43:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:43:22,611 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:43:22,612 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:43:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:22,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:22,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:22,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:22,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:22,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:22,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:22,676 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-05-01 06:43:22,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:43:22,701 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-05-01 06:43:22,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:43:22,704 INFO L142 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-05-01 06:43:22,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:22,732 INFO L142 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-05-01 06:43:22,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:22,735 INFO L142 QuantifierPusher]: treesize reduction 52, result has 54.4 percent of original size [2021-05-01 06:43:22,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:43:22,771 INFO L142 QuantifierPusher]: treesize reduction 52, result has 50.9 percent of original size [2021-05-01 06:43:22,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:43:22,784 INFO L142 QuantifierPusher]: treesize reduction 36, result has 35.7 percent of original size [2021-05-01 06:43:22,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:43:22,800 INFO L142 QuantifierPusher]: treesize reduction 38, result has 37.7 percent of original size [2021-05-01 06:43:22,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:43:22,808 INFO L142 QuantifierPusher]: treesize reduction 83, result has 43.2 percent of original size [2021-05-01 06:43:22,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:43:22,845 INFO L142 QuantifierPusher]: treesize reduction 77, result has 51.0 percent of original size [2021-05-01 06:43:22,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 06:43:22,907 INFO L142 QuantifierPusher]: treesize reduction 77, result has 54.2 percent of original size [2021-05-01 06:43:22,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 06:43:22,991 INFO L142 QuantifierPusher]: treesize reduction 77, result has 53.3 percent of original size [2021-05-01 06:43:22,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:43:23,067 INFO L142 QuantifierPusher]: treesize reduction 62, result has 46.6 percent of original size [2021-05-01 06:43:23,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:43:23,109 INFO L142 QuantifierPusher]: treesize reduction 65, result has 53.2 percent of original size [2021-05-01 06:43:23,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:43:23,153 INFO L142 QuantifierPusher]: treesize reduction 58, result has 61.8 percent of original size [2021-05-01 06:43:23,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 06:43:23,219 INFO L142 QuantifierPusher]: treesize reduction 64, result has 59.0 percent of original size [2021-05-01 06:43:23,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-05-01 06:43:23,285 INFO L142 QuantifierPusher]: treesize reduction 90, result has 52.9 percent of original size [2021-05-01 06:43:23,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 06:43:23,367 INFO L142 QuantifierPusher]: treesize reduction 92, result has 51.3 percent of original size [2021-05-01 06:43:23,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 06:43:23,441 INFO L142 QuantifierPusher]: treesize reduction 26, result has 74.8 percent of original size [2021-05-01 06:43:23,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:43:23,505 INFO L142 QuantifierPusher]: treesize reduction 26, result has 72.9 percent of original size [2021-05-01 06:43:23,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:43:23,572 INFO L142 QuantifierPusher]: treesize reduction 28, result has 70.5 percent of original size [2021-05-01 06:43:23,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:43:23,630 INFO L142 QuantifierPusher]: treesize reduction 28, result has 64.6 percent of original size [2021-05-01 06:43:23,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:43:23,681 INFO L142 QuantifierPusher]: treesize reduction 31, result has 62.7 percent of original size [2021-05-01 06:43:23,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:43:23,736 INFO L142 QuantifierPusher]: treesize reduction 69, result has 55.5 percent of original size [2021-05-01 06:43:23,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:43:23,815 INFO L142 QuantifierPusher]: treesize reduction 28, result has 63.2 percent of original size [2021-05-01 06:43:23,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:43:23,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:43:23,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:43:23,903 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:43:23,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:43:23,938 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 06:43:23,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:43:23,980 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-05-01 06:43:23,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:43:24,028 INFO L142 QuantifierPusher]: treesize reduction 26, result has 68.3 percent of original size [2021-05-01 06:43:24,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:43:24,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:24,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:24,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:24,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:24,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:24,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:24,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:24,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:24,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:43:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:24,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:24,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-01 06:43:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:24,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:24,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:24,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-05-01 06:43:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:24,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:24,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:43:24,234 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:43:24,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857801930] [2021-05-01 06:43:24,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [857801930] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:43:24,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:43:24,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-01 06:43:24,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745616207] [2021-05-01 06:43:24,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-01 06:43:24,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:43:24,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-01 06:43:24,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 06:43:24,235 INFO L87 Difference]: Start difference. First operand 1158 states and 1378 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) [2021-05-01 06:43:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:43:29,825 INFO L93 Difference]: Finished difference Result 1276 states and 1512 transitions. [2021-05-01 06:43:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-01 06:43:29,827 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 [2021-05-01 06:43:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:43:29,828 INFO L225 Difference]: With dead ends: 1276 [2021-05-01 06:43:29,828 INFO L226 Difference]: Without dead ends: 1260 [2021-05-01 06:43:29,829 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2082 ImplicationChecksByTransitivity, 4300.4ms TimeCoverageRelationStatistics Valid=651, Invalid=6321, Unknown=0, NotChecked=0, Total=6972 [2021-05-01 06:43:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-05-01 06:43:30,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1218. [2021-05-01 06:43:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1134 states have (on average 1.1790123456790123) internal successors, (1337), 1169 states have internal predecessors, (1337), 56 states have call successors, (56), 28 states have call predecessors, (56), 27 states have return successors, (54), 20 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-01 06:43:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1447 transitions. [2021-05-01 06:43:30,442 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1447 transitions. Word has length 69 [2021-05-01 06:43:30,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:43:30,442 INFO L480 AbstractCegarLoop]: Abstraction has 1218 states and 1447 transitions. [2021-05-01 06:43:30,442 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) [2021-05-01 06:43:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1447 transitions. [2021-05-01 06:43:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-01 06:43:30,443 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:43:30,443 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] [2021-05-01 06:43:30,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-01 06:43:30,444 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:43:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:43:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1404533430, now seen corresponding path program 18 times [2021-05-01 06:43:30,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:43:30,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929558016] [2021-05-01 06:43:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:43:30,453 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:43:30,453 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:43:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:30,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:30,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:30,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:30,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:30,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:30,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:30,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:30,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:30,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:30,532 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:43:30,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:43:30,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:30,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:30,553 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:43:30,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:43:30,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:30,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:30,575 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:43:30,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:43:30,597 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:43:30,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:43:30,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:30,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:43:30,600 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-05-01 06:43:30,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:30,606 INFO L142 QuantifierPusher]: treesize reduction 33, result has 38.9 percent of original size [2021-05-01 06:43:30,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:43:30,638 INFO L142 QuantifierPusher]: treesize reduction 33, result has 35.3 percent of original size [2021-05-01 06:43:30,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:43:30,670 INFO L142 QuantifierPusher]: treesize reduction 35, result has 28.6 percent of original size [2021-05-01 06:43:30,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:43:30,691 INFO L142 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size [2021-05-01 06:43:30,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:30,696 INFO L142 QuantifierPusher]: treesize reduction 28, result has 49.1 percent of original size [2021-05-01 06:43:30,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:43:30,703 INFO L142 QuantifierPusher]: treesize reduction 94, result has 32.4 percent of original size [2021-05-01 06:43:30,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:43:30,737 INFO L142 QuantifierPusher]: treesize reduction 88, result has 30.7 percent of original size [2021-05-01 06:43:30,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:43:30,778 INFO L142 QuantifierPusher]: treesize reduction 86, result has 30.1 percent of original size [2021-05-01 06:43:30,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:43:30,814 INFO L142 QuantifierPusher]: treesize reduction 28, result has 48.1 percent of original size [2021-05-01 06:43:30,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:43:30,844 INFO L142 QuantifierPusher]: treesize reduction 30, result has 47.4 percent of original size [2021-05-01 06:43:30,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:43:30,870 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.1 percent of original size [2021-05-01 06:43:30,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:43:30,913 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-05-01 06:43:30,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:43:30,949 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size [2021-05-01 06:43:30,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:43:30,986 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-05-01 06:43:30,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:43:31,030 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size [2021-05-01 06:43:31,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:43:31,031 INFO L142 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size [2021-05-01 06:43:31,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:43:31,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:31,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:43:31,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:31,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:43:31,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:31,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:43:31,174 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-05-01 06:43:31,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:43:31,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:31,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:43:31,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:31,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:31,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:31,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:31,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:31,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:31,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:31,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:43:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:31,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:31,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:31,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-01 06:43:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:31,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:31,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:43:31,387 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:43:31,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929558016] [2021-05-01 06:43:31,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [929558016] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:43:31,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:43:31,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 06:43:31,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791379636] [2021-05-01 06:43:31,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 06:43:31,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:43:31,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 06:43:31,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-05-01 06:43:31,387 INFO L87 Difference]: Start difference. First operand 1218 states and 1447 transitions. Second operand has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 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) [2021-05-01 06:43:35,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:43:35,471 INFO L93 Difference]: Finished difference Result 1516 states and 1816 transitions. [2021-05-01 06:43:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-01 06:43:35,473 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 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 [2021-05-01 06:43:35,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:43:35,475 INFO L225 Difference]: With dead ends: 1516 [2021-05-01 06:43:35,476 INFO L226 Difference]: Without dead ends: 1514 [2021-05-01 06:43:35,476 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 1895.1ms TimeCoverageRelationStatistics Valid=321, Invalid=2541, Unknown=0, NotChecked=0, Total=2862 [2021-05-01 06:43:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-05-01 06:43:36,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1076. [2021-05-01 06:43:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1022 states have (on average 1.1937377690802349) internal successors, (1220), 1043 states have internal predecessors, (1220), 35 states have call successors, (35), 19 states have call predecessors, (35), 18 states have return successors, (33), 13 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-01 06:43:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1288 transitions. [2021-05-01 06:43:36,018 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1288 transitions. Word has length 68 [2021-05-01 06:43:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:43:36,018 INFO L480 AbstractCegarLoop]: Abstraction has 1076 states and 1288 transitions. [2021-05-01 06:43:36,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 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) [2021-05-01 06:43:36,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1288 transitions. [2021-05-01 06:43:36,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-01 06:43:36,019 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:43:36,019 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] [2021-05-01 06:43:36,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-01 06:43:36,019 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:43:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:43:36,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2068396432, now seen corresponding path program 19 times [2021-05-01 06:43:36,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:43:36,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848025152] [2021-05-01 06:43:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:43:36,025 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:43:36,025 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:43:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:36,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:36,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:36,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:36,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:36,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:36,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:36,137 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-05-01 06:43:36,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:43:36,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 06:43:36,164 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-05-01 06:43:36,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:36,170 INFO L142 QuantifierPusher]: treesize reduction 18, result has 53.8 percent of original size [2021-05-01 06:43:36,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:43:36,206 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-05-01 06:43:36,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:43:36,246 INFO L142 QuantifierPusher]: treesize reduction 20, result has 41.2 percent of original size [2021-05-01 06:43:36,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:43:36,276 INFO L142 QuantifierPusher]: treesize reduction 19, result has 13.6 percent of original size [2021-05-01 06:43:36,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:36,282 INFO L142 QuantifierPusher]: treesize reduction 17, result has 61.4 percent of original size [2021-05-01 06:43:36,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:43:36,291 INFO L142 QuantifierPusher]: treesize reduction 20, result has 70.6 percent of original size [2021-05-01 06:43:36,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:43:36,332 INFO L142 QuantifierPusher]: treesize reduction 20, result has 67.7 percent of original size [2021-05-01 06:43:36,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:43:36,398 INFO L142 QuantifierPusher]: treesize reduction 20, result has 66.7 percent of original size [2021-05-01 06:43:36,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:43:36,445 INFO L142 QuantifierPusher]: treesize reduction 22, result has 54.2 percent of original size [2021-05-01 06:43:36,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:43:36,478 INFO L142 QuantifierPusher]: treesize reduction 24, result has 52.9 percent of original size [2021-05-01 06:43:36,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:43:36,508 INFO L142 QuantifierPusher]: treesize reduction 24, result has 64.2 percent of original size [2021-05-01 06:43:36,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:43:36,544 INFO L142 QuantifierPusher]: treesize reduction 24, result has 52.9 percent of original size [2021-05-01 06:43:36,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:43:36,546 INFO L142 QuantifierPusher]: treesize reduction 24, result has 52.9 percent of original size [2021-05-01 06:43:36,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:43:36,574 INFO L142 QuantifierPusher]: treesize reduction 9, result has 88.9 percent of original size [2021-05-01 06:43:36,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:43:36,620 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.3 percent of original size [2021-05-01 06:43:36,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:43:36,665 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-05-01 06:43:36,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:43:36,703 INFO L142 QuantifierPusher]: treesize reduction 4, result has 86.2 percent of original size [2021-05-01 06:43:36,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:43:36,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:43:36,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:43:36,803 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-05-01 06:43:36,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:43:36,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:43:36,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:36,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:36,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:36,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:36,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:37,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:43:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:37,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:37,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-01 06:43:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:37,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:37,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:43:37,034 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:43:37,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848025152] [2021-05-01 06:43:37,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1848025152] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:43:37,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:43:37,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 06:43:37,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537790339] [2021-05-01 06:43:37,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 06:43:37,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:43:37,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 06:43:37,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2021-05-01 06:43:37,035 INFO L87 Difference]: Start difference. First operand 1076 states and 1288 transitions. Second operand has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 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) [2021-05-01 06:43:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:43:40,251 INFO L93 Difference]: Finished difference Result 1388 states and 1673 transitions. [2021-05-01 06:43:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-01 06:43:40,253 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 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 [2021-05-01 06:43:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:43:40,254 INFO L225 Difference]: With dead ends: 1388 [2021-05-01 06:43:40,255 INFO L226 Difference]: Without dead ends: 1386 [2021-05-01 06:43:40,255 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 1772.7ms TimeCoverageRelationStatistics Valid=294, Invalid=2358, Unknown=0, NotChecked=0, Total=2652 [2021-05-01 06:43:40,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-05-01 06:43:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1107. [2021-05-01 06:43:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1050 states have (on average 1.1961904761904762) internal successors, (1256), 1073 states have internal predecessors, (1256), 38 states have call successors, (38), 19 states have call predecessors, (38), 18 states have return successors, (36), 14 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-01 06:43:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1330 transitions. [2021-05-01 06:43:40,815 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1330 transitions. Word has length 68 [2021-05-01 06:43:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:43:40,815 INFO L480 AbstractCegarLoop]: Abstraction has 1107 states and 1330 transitions. [2021-05-01 06:43:40,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 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) [2021-05-01 06:43:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1330 transitions. [2021-05-01 06:43:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:43:40,816 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:43:40,816 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] [2021-05-01 06:43:40,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-01 06:43:40,816 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:43:40,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:43:40,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1755632320, now seen corresponding path program 12 times [2021-05-01 06:43:40,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:43:40,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109731639] [2021-05-01 06:43:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:43:40,822 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:43:40,823 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:43:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:40,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:40,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:40,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:40,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:40,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:40,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:40,908 INFO L142 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-05-01 06:43:40,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:43:40,928 INFO L142 QuantifierPusher]: treesize reduction 16, result has 72.4 percent of original size [2021-05-01 06:43:40,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:43:40,931 INFO L142 QuantifierPusher]: treesize reduction 33, result has 59.3 percent of original size [2021-05-01 06:43:40,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:43:40,955 INFO L142 QuantifierPusher]: treesize reduction 25, result has 65.8 percent of original size [2021-05-01 06:43:40,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:43:40,957 INFO L142 QuantifierPusher]: treesize reduction 73, result has 50.0 percent of original size [2021-05-01 06:43:40,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:43:40,997 INFO L142 QuantifierPusher]: treesize reduction 73, result has 47.1 percent of original size [2021-05-01 06:43:40,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:43:41,010 INFO L142 QuantifierPusher]: treesize reduction 40, result has 57.9 percent of original size [2021-05-01 06:43:41,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:43:41,049 INFO L142 QuantifierPusher]: treesize reduction 40, result has 54.0 percent of original size [2021-05-01 06:43:41,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:43:41,062 INFO L142 QuantifierPusher]: treesize reduction 44, result has 44.3 percent of original size [2021-05-01 06:43:41,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:43:41,081 INFO L142 QuantifierPusher]: treesize reduction 59, result has 49.6 percent of original size [2021-05-01 06:43:41,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:43:41,091 INFO L142 QuantifierPusher]: treesize reduction 87, result has 57.6 percent of original size [2021-05-01 06:43:41,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-05-01 06:43:41,140 INFO L142 QuantifierPusher]: treesize reduction 88, result has 60.0 percent of original size [2021-05-01 06:43:41,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-05-01 06:43:41,162 INFO L142 QuantifierPusher]: treesize reduction 81, result has 60.5 percent of original size [2021-05-01 06:43:41,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-05-01 06:43:41,234 INFO L142 QuantifierPusher]: treesize reduction 79, result has 60.9 percent of original size [2021-05-01 06:43:41,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-05-01 06:43:41,300 INFO L142 QuantifierPusher]: treesize reduction 58, result has 55.4 percent of original size [2021-05-01 06:43:41,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:43:41,352 INFO L142 QuantifierPusher]: treesize reduction 114, result has 43.3 percent of original size [2021-05-01 06:43:41,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:43:41,415 INFO L142 QuantifierPusher]: treesize reduction 116, result has 47.0 percent of original size [2021-05-01 06:43:41,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-05-01 06:43:41,481 INFO L142 QuantifierPusher]: treesize reduction 116, result has 42.9 percent of original size [2021-05-01 06:43:41,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:43:41,484 INFO L142 QuantifierPusher]: treesize reduction 118, result has 42.4 percent of original size [2021-05-01 06:43:41,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:43:41,546 INFO L142 QuantifierPusher]: treesize reduction 140, result has 48.0 percent of original size [2021-05-01 06:43:41,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-05-01 06:43:41,629 INFO L142 QuantifierPusher]: treesize reduction 116, result has 40.5 percent of original size [2021-05-01 06:43:41,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:43:41,652 INFO L142 QuantifierPusher]: treesize reduction 115, result has 40.7 percent of original size [2021-05-01 06:43:41,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:43:41,709 INFO L142 QuantifierPusher]: treesize reduction 102, result has 52.1 percent of original size [2021-05-01 06:43:41,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 06:43:41,777 INFO L142 QuantifierPusher]: treesize reduction 94, result has 50.3 percent of original size [2021-05-01 06:43:41,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 06:43:41,848 INFO L142 QuantifierPusher]: treesize reduction 86, result has 47.6 percent of original size [2021-05-01 06:43:41,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 06:43:41,927 INFO L142 QuantifierPusher]: treesize reduction 86, result has 47.6 percent of original size [2021-05-01 06:43:41,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 06:43:41,930 INFO L142 QuantifierPusher]: treesize reduction 66, result has 53.8 percent of original size [2021-05-01 06:43:41,931 INFO L147 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size 74 [2021-05-01 06:43:42,003 INFO L142 QuantifierPusher]: treesize reduction 64, result has 60.2 percent of original size [2021-05-01 06:43:42,005 INFO L147 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 94 [2021-05-01 06:43:42,088 INFO L142 QuantifierPusher]: treesize reduction 66, result has 58.5 percent of original size [2021-05-01 06:43:42,089 INFO L147 QuantifierPusher]: treesize reduction 3, result has 96.8 percent of original size 90 [2021-05-01 06:43:42,167 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-05-01 06:43:42,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:43:42,209 INFO L142 QuantifierPusher]: treesize reduction 8, result has 82.2 percent of original size [2021-05-01 06:43:42,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:43:42,253 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:43:42,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:43:42,296 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:43:42,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:43:42,334 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-05-01 06:43:42,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:43:42,376 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:43:42,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:43:42,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:42,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:42,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:42,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:42,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:42,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:42,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:42,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:42,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:43:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:42,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:42,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:42,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-05-01 06:43:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:42,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:42,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:43:42,548 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:43:42,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109731639] [2021-05-01 06:43:42,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [109731639] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:43:42,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:43:42,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-01 06:43:42,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343546721] [2021-05-01 06:43:42,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-01 06:43:42,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:43:42,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-01 06:43:42,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 06:43:42,549 INFO L87 Difference]: Start difference. First operand 1107 states and 1330 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) [2021-05-01 06:43:43,309 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-05-01 06:43:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:43:52,059 INFO L93 Difference]: Finished difference Result 1347 states and 1617 transitions. [2021-05-01 06:43:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-01 06:43:52,061 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 [2021-05-01 06:43:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:43:52,062 INFO L225 Difference]: With dead ends: 1347 [2021-05-01 06:43:52,062 INFO L226 Difference]: Without dead ends: 1345 [2021-05-01 06:43:52,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4227 ImplicationChecksByTransitivity, 6588.5ms TimeCoverageRelationStatistics Valid=1433, Invalid=11449, Unknown=0, NotChecked=0, Total=12882 [2021-05-01 06:43:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2021-05-01 06:43:52,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1130. [2021-05-01 06:43:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1074 states have (on average 1.1973929236499068) internal successors, (1286), 1097 states have internal predecessors, (1286), 37 states have call successors, (37), 19 states have call predecessors, (37), 18 states have return successors, (35), 13 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-01 06:43:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1358 transitions. [2021-05-01 06:43:52,645 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1358 transitions. Word has length 69 [2021-05-01 06:43:52,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:43:52,645 INFO L480 AbstractCegarLoop]: Abstraction has 1130 states and 1358 transitions. [2021-05-01 06:43:52,645 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) [2021-05-01 06:43:52,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1358 transitions. [2021-05-01 06:43:52,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:43:52,647 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:43:52,647 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] [2021-05-01 06:43:52,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-01 06:43:52,647 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:43:52,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:43:52,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1758967990, now seen corresponding path program 13 times [2021-05-01 06:43:52,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:43:52,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163561904] [2021-05-01 06:43:52,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:43:52,652 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:43:52,653 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:43:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:52,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:52,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:52,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:52,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:52,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:52,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:43:52,735 INFO L142 QuantifierPusher]: treesize reduction 25, result has 62.1 percent of original size [2021-05-01 06:43:52,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:43:52,767 INFO L142 QuantifierPusher]: treesize reduction 25, result has 56.9 percent of original size [2021-05-01 06:43:52,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:43:52,776 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:43:52,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:43:52,808 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:43:52,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:43:52,820 INFO L142 QuantifierPusher]: treesize reduction 62, result has 47.5 percent of original size [2021-05-01 06:43:52,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:43:52,854 INFO L142 QuantifierPusher]: treesize reduction 62, result has 43.6 percent of original size [2021-05-01 06:43:52,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:43:52,866 INFO L142 QuantifierPusher]: treesize reduction 29, result has 56.7 percent of original size [2021-05-01 06:43:52,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:43:52,898 INFO L142 QuantifierPusher]: treesize reduction 29, result has 50.8 percent of original size [2021-05-01 06:43:52,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:43:52,910 INFO L142 QuantifierPusher]: treesize reduction 33, result has 35.3 percent of original size [2021-05-01 06:43:52,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:43:52,942 INFO L142 QuantifierPusher]: treesize reduction 48, result has 41.5 percent of original size [2021-05-01 06:43:52,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:43:52,950 INFO L142 QuantifierPusher]: treesize reduction 50, result has 65.8 percent of original size [2021-05-01 06:43:52,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 06:43:52,988 INFO L142 QuantifierPusher]: treesize reduction 51, result has 67.3 percent of original size [2021-05-01 06:43:52,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-05-01 06:43:53,009 INFO L142 QuantifierPusher]: treesize reduction 51, result has 65.3 percent of original size [2021-05-01 06:43:53,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 06:43:53,073 INFO L142 QuantifierPusher]: treesize reduction 53, result has 63.7 percent of original size [2021-05-01 06:43:53,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:43:53,123 INFO L142 QuantifierPusher]: treesize reduction 50, result has 48.5 percent of original size [2021-05-01 06:43:53,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:43:53,165 INFO L142 QuantifierPusher]: treesize reduction 58, result has 48.7 percent of original size [2021-05-01 06:43:53,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:43:53,211 INFO L142 QuantifierPusher]: treesize reduction 58, result has 55.0 percent of original size [2021-05-01 06:43:53,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:43:53,268 INFO L142 QuantifierPusher]: treesize reduction 58, result has 48.7 percent of original size [2021-05-01 06:43:53,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:43:53,270 INFO L142 QuantifierPusher]: treesize reduction 120, result has 28.1 percent of original size [2021-05-01 06:43:53,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:43:53,315 INFO L142 QuantifierPusher]: treesize reduction 74, result has 63.0 percent of original size [2021-05-01 06:43:53,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-05-01 06:43:53,405 INFO L142 QuantifierPusher]: treesize reduction 76, result has 55.0 percent of original size [2021-05-01 06:43:53,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:43:53,484 INFO L142 QuantifierPusher]: treesize reduction 81, result has 59.3 percent of original size [2021-05-01 06:43:53,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-05-01 06:43:53,576 INFO L142 QuantifierPusher]: treesize reduction 82, result has 60.8 percent of original size [2021-05-01 06:43:53,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-05-01 06:43:53,665 INFO L142 QuantifierPusher]: treesize reduction 82, result has 60.2 percent of original size [2021-05-01 06:43:53,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-05-01 06:43:53,743 INFO L142 QuantifierPusher]: treesize reduction 75, result has 48.6 percent of original size [2021-05-01 06:43:53,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:43:53,817 INFO L142 QuantifierPusher]: treesize reduction 75, result has 47.9 percent of original size [2021-05-01 06:43:53,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:43:53,889 INFO L142 QuantifierPusher]: treesize reduction 75, result has 47.6 percent of original size [2021-05-01 06:43:53,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:43:53,974 INFO L142 QuantifierPusher]: treesize reduction 75, result has 40.9 percent of original size [2021-05-01 06:43:53,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:43:54,058 INFO L142 QuantifierPusher]: treesize reduction 47, result has 39.0 percent of original size [2021-05-01 06:43:54,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:43:54,105 INFO L142 QuantifierPusher]: treesize reduction 34, result has 64.6 percent of original size [2021-05-01 06:43:54,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:43:54,160 INFO L142 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-05-01 06:43:54,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:43:54,206 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:43:54,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:43:54,250 INFO L142 QuantifierPusher]: treesize reduction 33, result has 46.8 percent of original size [2021-05-01 06:43:54,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:43:54,321 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:43:54,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:43:54,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:54,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:43:54,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:54,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:54,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:54,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:43:54,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:54,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:54,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:43:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:54,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:54,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:54,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-05-01 06:43:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:43:54,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:43:54,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:43:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:43:54,531 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:43:54,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163561904] [2021-05-01 06:43:54,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [163561904] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:43:54,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:43:54,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-01 06:43:54,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560277013] [2021-05-01 06:43:54,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-01 06:43:54,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:43:54,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-01 06:43:54,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 06:43:54,532 INFO L87 Difference]: Start difference. First operand 1130 states and 1358 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) [2021-05-01 06:43:59,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:43:59,906 INFO L93 Difference]: Finished difference Result 1409 states and 1695 transitions. [2021-05-01 06:43:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-01 06:43:59,909 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 [2021-05-01 06:43:59,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:43:59,910 INFO L225 Difference]: With dead ends: 1409 [2021-05-01 06:43:59,910 INFO L226 Difference]: Without dead ends: 1407 [2021-05-01 06:43:59,911 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1604 ImplicationChecksByTransitivity, 4051.2ms TimeCoverageRelationStatistics Valid=517, Invalid=4885, Unknown=0, NotChecked=0, Total=5402 [2021-05-01 06:43:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2021-05-01 06:44:00,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1145. [2021-05-01 06:44:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1088 states have (on average 1.197610294117647) internal successors, (1303), 1112 states have internal predecessors, (1303), 38 states have call successors, (38), 19 states have call predecessors, (38), 18 states have return successors, (36), 13 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-01 06:44:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1377 transitions. [2021-05-01 06:44:00,518 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1377 transitions. Word has length 69 [2021-05-01 06:44:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:44:00,518 INFO L480 AbstractCegarLoop]: Abstraction has 1145 states and 1377 transitions. [2021-05-01 06:44:00,518 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) [2021-05-01 06:44:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1377 transitions. [2021-05-01 06:44:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:44:00,519 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:44:00,519 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] [2021-05-01 06:44:00,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-01 06:44:00,519 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:44:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:44:00,519 INFO L82 PathProgramCache]: Analyzing trace with hash -310743238, now seen corresponding path program 14 times [2021-05-01 06:44:00,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:44:00,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028190020] [2021-05-01 06:44:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:44:00,525 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:44:00,525 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:44:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:00,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:00,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:00,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:00,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:00,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:00,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:00,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:00,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:00,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:00,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:00,642 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:44:00,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:44:00,672 INFO L142 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-05-01 06:44:00,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:00,686 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-05-01 06:44:00,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:00,695 INFO L142 QuantifierPusher]: treesize reduction 65, result has 37.5 percent of original size [2021-05-01 06:44:00,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:44:00,750 INFO L142 QuantifierPusher]: treesize reduction 74, result has 39.3 percent of original size [2021-05-01 06:44:00,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:44:00,820 INFO L142 QuantifierPusher]: treesize reduction 76, result has 42.9 percent of original size [2021-05-01 06:44:00,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:44:00,901 INFO L142 QuantifierPusher]: treesize reduction 76, result has 42.0 percent of original size [2021-05-01 06:44:00,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:44:00,971 INFO L142 QuantifierPusher]: treesize reduction 38, result has 54.2 percent of original size [2021-05-01 06:44:00,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:44:01,021 INFO L142 QuantifierPusher]: treesize reduction 56, result has 50.0 percent of original size [2021-05-01 06:44:01,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:44:01,083 INFO L142 QuantifierPusher]: treesize reduction 56, result has 61.9 percent of original size [2021-05-01 06:44:01,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 06:44:01,157 INFO L142 QuantifierPusher]: treesize reduction 72, result has 64.7 percent of original size [2021-05-01 06:44:01,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-05-01 06:44:01,283 INFO L142 QuantifierPusher]: treesize reduction 75, result has 65.3 percent of original size [2021-05-01 06:44:01,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-05-01 06:44:01,391 INFO L142 QuantifierPusher]: treesize reduction 75, result has 63.2 percent of original size [2021-05-01 06:44:01,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-05-01 06:44:01,490 INFO L142 QuantifierPusher]: treesize reduction 75, result has 63.1 percent of original size [2021-05-01 06:44:01,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-05-01 06:44:01,586 INFO L142 QuantifierPusher]: treesize reduction 66, result has 42.6 percent of original size [2021-05-01 06:44:01,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:44:01,610 INFO L142 QuantifierPusher]: treesize reduction 69, result has 41.5 percent of original size [2021-05-01 06:44:01,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:44:01,701 INFO L142 QuantifierPusher]: treesize reduction 47, result has 66.7 percent of original size [2021-05-01 06:44:01,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 06:44:01,782 INFO L142 QuantifierPusher]: treesize reduction 52, result has 53.2 percent of original size [2021-05-01 06:44:01,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:44:01,855 INFO L142 QuantifierPusher]: treesize reduction 52, result has 53.2 percent of original size [2021-05-01 06:44:01,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:44:01,858 INFO L142 QuantifierPusher]: treesize reduction 32, result has 72.4 percent of original size [2021-05-01 06:44:01,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:44:01,947 INFO L142 QuantifierPusher]: treesize reduction 41, result has 69.4 percent of original size [2021-05-01 06:44:01,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:44:02,034 INFO L142 QuantifierPusher]: treesize reduction 41, result has 68.7 percent of original size [2021-05-01 06:44:02,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 06:44:02,121 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.7 percent of original size [2021-05-01 06:44:02,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:44:02,186 INFO L142 QuantifierPusher]: treesize reduction 24, result has 65.7 percent of original size [2021-05-01 06:44:02,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:44:02,261 INFO L142 QuantifierPusher]: treesize reduction 24, result has 64.7 percent of original size [2021-05-01 06:44:02,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:44:02,322 INFO L142 QuantifierPusher]: treesize reduction 24, result has 53.8 percent of original size [2021-05-01 06:44:02,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:44:02,377 INFO L142 QuantifierPusher]: treesize reduction 23, result has 54.9 percent of original size [2021-05-01 06:44:02,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:44:02,439 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:44:02,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:44:02,498 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:44:02,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:44:02,545 INFO L142 QuantifierPusher]: treesize reduction 31, result has 48.3 percent of original size [2021-05-01 06:44:02,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:44:02,618 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:44:02,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:44:02,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:02,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:02,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:02,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:02,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:02,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:02,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:02,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:44:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:02,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:02,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-05-01 06:44:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:02,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:02,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:44:02,875 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:44:02,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028190020] [2021-05-01 06:44:02,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2028190020] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:44:02,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:44:02,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-01 06:44:02,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231171799] [2021-05-01 06:44:02,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-01 06:44:02,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:44:02,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-01 06:44:02,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1225, Unknown=0, NotChecked=0, Total=1406 [2021-05-01 06:44:02,876 INFO L87 Difference]: Start difference. First operand 1145 states and 1377 transitions. Second operand has 38 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 36 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) [2021-05-01 06:44:03,817 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2021-05-01 06:44:04,051 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2021-05-01 06:44:04,292 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 32 [2021-05-01 06:44:04,902 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2021-05-01 06:44:05,331 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2021-05-01 06:44:05,982 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2021-05-01 06:44:06,244 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2021-05-01 06:44:06,456 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2021-05-01 06:44:06,958 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2021-05-01 06:44:07,389 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-05-01 06:44:09,156 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-05-01 06:44:09,469 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-05-01 06:44:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:44:12,383 INFO L93 Difference]: Finished difference Result 1276 states and 1533 transitions. [2021-05-01 06:44:12,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-01 06:44:12,385 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 36 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 [2021-05-01 06:44:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:44:12,387 INFO L225 Difference]: With dead ends: 1276 [2021-05-01 06:44:12,387 INFO L226 Difference]: Without dead ends: 1274 [2021-05-01 06:44:12,393 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 8134.7ms TimeCoverageRelationStatistics Valid=832, Invalid=7178, Unknown=0, NotChecked=0, Total=8010 [2021-05-01 06:44:12,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-05-01 06:44:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1133. [2021-05-01 06:44:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1077 states have (on average 1.1977715877437325) internal successors, (1290), 1100 states have internal predecessors, (1290), 37 states have call successors, (37), 19 states have call predecessors, (37), 18 states have return successors, (35), 13 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-01 06:44:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1362 transitions. [2021-05-01 06:44:12,972 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1362 transitions. Word has length 69 [2021-05-01 06:44:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:44:12,972 INFO L480 AbstractCegarLoop]: Abstraction has 1133 states and 1362 transitions. [2021-05-01 06:44:12,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 36 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) [2021-05-01 06:44:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1362 transitions. [2021-05-01 06:44:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:44:12,974 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:44:12,974 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] [2021-05-01 06:44:12,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-01 06:44:12,974 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:44:12,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:44:12,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1944728152, now seen corresponding path program 15 times [2021-05-01 06:44:12,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:44:12,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111692473] [2021-05-01 06:44:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:44:12,980 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:44:12,981 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:44:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:13,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:13,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:13,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:13,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:13,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:13,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:13,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:13,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:13,079 INFO L142 QuantifierPusher]: treesize reduction 64, result has 13.5 percent of original size [2021-05-01 06:44:13,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:13,095 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-05-01 06:44:13,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:44:13,128 INFO L142 QuantifierPusher]: treesize reduction 26, result has 43.5 percent of original size [2021-05-01 06:44:13,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:44:13,147 INFO L142 QuantifierPusher]: treesize reduction 28, result has 45.1 percent of original size [2021-05-01 06:44:13,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:44:13,153 INFO L142 QuantifierPusher]: treesize reduction 36, result has 49.3 percent of original size [2021-05-01 06:44:13,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:44:13,196 INFO L142 QuantifierPusher]: treesize reduction 38, result has 47.2 percent of original size [2021-05-01 06:44:13,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:44:13,239 INFO L142 QuantifierPusher]: treesize reduction 36, result has 57.1 percent of original size [2021-05-01 06:44:13,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:44:13,291 INFO L142 QuantifierPusher]: treesize reduction 62, result has 47.5 percent of original size [2021-05-01 06:44:13,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:44:13,347 INFO L142 QuantifierPusher]: treesize reduction 74, result has 46.4 percent of original size [2021-05-01 06:44:13,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:44:13,433 INFO L142 QuantifierPusher]: treesize reduction 76, result has 44.5 percent of original size [2021-05-01 06:44:13,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:44:13,507 INFO L142 QuantifierPusher]: treesize reduction 48, result has 50.5 percent of original size [2021-05-01 06:44:13,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:44:13,564 INFO L142 QuantifierPusher]: treesize reduction 64, result has 49.2 percent of original size [2021-05-01 06:44:13,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:44:13,627 INFO L142 QuantifierPusher]: treesize reduction 59, result has 56.3 percent of original size [2021-05-01 06:44:13,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:44:13,713 INFO L142 QuantifierPusher]: treesize reduction 63, result has 58.8 percent of original size [2021-05-01 06:44:13,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 06:44:13,809 INFO L142 QuantifierPusher]: treesize reduction 64, result has 60.2 percent of original size [2021-05-01 06:44:13,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 06:44:13,921 INFO L142 QuantifierPusher]: treesize reduction 64, result has 59.5 percent of original size [2021-05-01 06:44:13,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 06:44:14,024 INFO L142 QuantifierPusher]: treesize reduction 72, result has 57.4 percent of original size [2021-05-01 06:44:14,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 06:44:14,137 INFO L142 QuantifierPusher]: treesize reduction 82, result has 54.7 percent of original size [2021-05-01 06:44:14,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-05-01 06:44:14,238 INFO L142 QuantifierPusher]: treesize reduction 82, result has 54.4 percent of original size [2021-05-01 06:44:14,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-05-01 06:44:14,316 INFO L142 QuantifierPusher]: treesize reduction 54, result has 43.8 percent of original size [2021-05-01 06:44:14,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:44:14,388 INFO L142 QuantifierPusher]: treesize reduction 57, result has 43.0 percent of original size [2021-05-01 06:44:14,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:44:14,444 INFO L142 QuantifierPusher]: treesize reduction 72, result has 57.4 percent of original size [2021-05-01 06:44:14,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 06:44:14,553 INFO L142 QuantifierPusher]: treesize reduction 72, result has 56.9 percent of original size [2021-05-01 06:44:14,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 06:44:14,653 INFO L142 QuantifierPusher]: treesize reduction 51, result has 42.0 percent of original size [2021-05-01 06:44:14,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:44:14,713 INFO L142 QuantifierPusher]: treesize reduction 49, result has 43.0 percent of original size [2021-05-01 06:44:14,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:44:14,770 INFO L142 QuantifierPusher]: treesize reduction 41, result has 58.2 percent of original size [2021-05-01 06:44:14,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:44:14,827 INFO L142 QuantifierPusher]: treesize reduction 28, result has 72.8 percent of original size [2021-05-01 06:44:14,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:44:14,927 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:44:14,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:44:14,975 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-05-01 06:44:14,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:44:15,027 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:44:15,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:44:15,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:15,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:15,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:15,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:15,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:15,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:15,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:15,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:15,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:44:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:15,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:15,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-05-01 06:44:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:15,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:15,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:44:15,247 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:44:15,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111692473] [2021-05-01 06:44:15,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2111692473] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:44:15,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:44:15,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-01 06:44:15,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979745817] [2021-05-01 06:44:15,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-01 06:44:15,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:44:15,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-01 06:44:15,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2021-05-01 06:44:15,248 INFO L87 Difference]: Start difference. First operand 1133 states and 1362 transitions. Second operand has 38 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 36 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) [2021-05-01 06:44:17,220 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-05-01 06:44:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:44:20,163 INFO L93 Difference]: Finished difference Result 1209 states and 1448 transitions. [2021-05-01 06:44:20,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-01 06:44:20,166 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 36 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 [2021-05-01 06:44:20,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:44:20,167 INFO L225 Difference]: With dead ends: 1209 [2021-05-01 06:44:20,167 INFO L226 Difference]: Without dead ends: 1207 [2021-05-01 06:44:20,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 4091.1ms TimeCoverageRelationStatistics Valid=402, Invalid=4020, Unknown=0, NotChecked=0, Total=4422 [2021-05-01 06:44:20,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2021-05-01 06:44:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1108. [2021-05-01 06:44:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1055 states have (on average 1.2) internal successors, (1266), 1076 states have internal predecessors, (1266), 35 states have call successors, (35), 18 states have call predecessors, (35), 17 states have return successors, (33), 13 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-01 06:44:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1334 transitions. [2021-05-01 06:44:20,727 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1334 transitions. Word has length 69 [2021-05-01 06:44:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:44:20,727 INFO L480 AbstractCegarLoop]: Abstraction has 1108 states and 1334 transitions. [2021-05-01 06:44:20,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 36 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) [2021-05-01 06:44:20,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1334 transitions. [2021-05-01 06:44:20,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-01 06:44:20,729 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:44:20,729 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] [2021-05-01 06:44:20,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-01 06:44:20,729 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:44:20,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:44:20,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1004222264, now seen corresponding path program 20 times [2021-05-01 06:44:20,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:44:20,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476556853] [2021-05-01 06:44:20,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:44:20,735 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:44:20,736 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:44:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:20,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:20,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:20,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:20,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:20,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:20,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:20,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:20,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:20,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:20,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:20,814 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:44:20,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:20,820 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-05-01 06:44:20,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:44:20,828 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-05-01 06:44:20,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:44:20,851 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-05-01 06:44:20,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:44:20,877 INFO L142 QuantifierPusher]: treesize reduction 22, result has 64.5 percent of original size [2021-05-01 06:44:20,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:44:20,907 INFO L142 QuantifierPusher]: treesize reduction 14, result has 53.3 percent of original size [2021-05-01 06:44:20,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:44:20,935 INFO L142 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-05-01 06:44:20,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:44:20,982 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-05-01 06:44:20,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:44:21,010 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:44:21,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:44:21,037 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-05-01 06:44:21,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:44:21,068 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:44:21,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:44:21,115 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-05-01 06:44:21,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:44:21,158 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-05-01 06:44:21,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:44:21,160 INFO L142 QuantifierPusher]: treesize reduction 25, result has 69.9 percent of original size [2021-05-01 06:44:21,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:44:21,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:21,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:44:21,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:21,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:21,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:21,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:21,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:21,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:21,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:44:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:21,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:21,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:21,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-05-01 06:44:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:21,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:21,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:21,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-05-01 06:44:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:21,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:21,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:44:21,346 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:44:21,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476556853] [2021-05-01 06:44:21,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [476556853] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:44:21,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:44:21,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 06:44:21,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714336633] [2021-05-01 06:44:21,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 06:44:21,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:44:21,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 06:44:21,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:44:21,346 INFO L87 Difference]: Start difference. First operand 1108 states and 1334 transitions. Second operand has 21 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 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) [2021-05-01 06:44:25,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:44:25,773 INFO L93 Difference]: Finished difference Result 1321 states and 1595 transitions. [2021-05-01 06:44:25,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-01 06:44:25,776 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 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 71 [2021-05-01 06:44:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:44:25,778 INFO L225 Difference]: With dead ends: 1321 [2021-05-01 06:44:25,778 INFO L226 Difference]: Without dead ends: 1319 [2021-05-01 06:44:25,778 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1616.8ms TimeCoverageRelationStatistics Valid=241, Invalid=2015, Unknown=0, NotChecked=0, Total=2256 [2021-05-01 06:44:25,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2021-05-01 06:44:26,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1150. [2021-05-01 06:44:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1091 states have (on average 1.1952337305224565) internal successors, (1304), 1116 states have internal predecessors, (1304), 41 states have call successors, (41), 18 states have call predecessors, (41), 17 states have return successors, (39), 15 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-01 06:44:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1384 transitions. [2021-05-01 06:44:26,482 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1384 transitions. Word has length 71 [2021-05-01 06:44:26,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:44:26,482 INFO L480 AbstractCegarLoop]: Abstraction has 1150 states and 1384 transitions. [2021-05-01 06:44:26,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 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) [2021-05-01 06:44:26,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1384 transitions. [2021-05-01 06:44:26,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:44:26,486 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:44:26,486 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:44:26,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-01 06:44:26,486 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:44:26,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:44:26,486 INFO L82 PathProgramCache]: Analyzing trace with hash 353640872, now seen corresponding path program 26 times [2021-05-01 06:44:26,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:44:26,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631703674] [2021-05-01 06:44:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:44:26,493 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:44:26,495 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:44:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:26,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:26,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:26,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:26,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:26,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:26,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:26,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:26,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:26,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:44:26,686 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.0 percent of original size [2021-05-01 06:44:26,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:44:26,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:44:26,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:44:26,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:44:26,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:44:26,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:44:26,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:26,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:44:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:26,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:26,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:44:26,994 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:44:26,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631703674] [2021-05-01 06:44:26,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1631703674] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:44:26,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:44:26,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 06:44:26,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54019199] [2021-05-01 06:44:26,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 06:44:26,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:44:26,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 06:44:26,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:44:26,994 INFO L87 Difference]: Start difference. First operand 1150 states and 1384 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) [2021-05-01 06:44:30,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:44:30,407 INFO L93 Difference]: Finished difference Result 2422 states and 2994 transitions. [2021-05-01 06:44:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-01 06:44:30,410 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 69 [2021-05-01 06:44:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:44:30,412 INFO L225 Difference]: With dead ends: 2422 [2021-05-01 06:44:30,412 INFO L226 Difference]: Without dead ends: 2118 [2021-05-01 06:44:30,413 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1161.8ms TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-05-01 06:44:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2021-05-01 06:44:31,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1619. [2021-05-01 06:44:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1560 states have (on average 1.2128205128205127) internal successors, (1892), 1585 states have internal predecessors, (1892), 41 states have call successors, (41), 18 states have call predecessors, (41), 17 states have return successors, (39), 15 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-01 06:44:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 1972 transitions. [2021-05-01 06:44:31,259 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 1972 transitions. Word has length 69 [2021-05-01 06:44:31,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:44:31,259 INFO L480 AbstractCegarLoop]: Abstraction has 1619 states and 1972 transitions. [2021-05-01 06:44:31,259 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) [2021-05-01 06:44:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 1972 transitions. [2021-05-01 06:44:31,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:44:31,260 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:44:31,260 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] [2021-05-01 06:44:31,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-05-01 06:44:31,261 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:44:31,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:44:31,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1795844299, now seen corresponding path program 27 times [2021-05-01 06:44:31,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:44:31,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825865937] [2021-05-01 06:44:31,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:44:31,266 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:44:31,267 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:44:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:31,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:31,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:31,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:31,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:31,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:31,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:31,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:31,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:31,341 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:44:31,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:31,348 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:31,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:31,365 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:31,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:31,384 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:31,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:31,404 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:31,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:31,426 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:31,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:31,446 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:31,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:31,468 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:31,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:31,494 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:31,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:31,521 INFO L142 QuantifierPusher]: treesize reduction 30, result has 47.4 percent of original size [2021-05-01 06:44:31,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:44:31,593 INFO L142 QuantifierPusher]: treesize reduction 22, result has 66.7 percent of original size [2021-05-01 06:44:31,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:44:31,646 INFO L142 QuantifierPusher]: treesize reduction 22, result has 71.1 percent of original size [2021-05-01 06:44:31,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:44:31,720 INFO L142 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-05-01 06:44:31,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:44:31,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:44:31,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:44:31,811 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:44:31,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:44:31,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:31,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:31,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:31,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:31,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:31,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:31,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:31,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:32,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:44:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:32,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:32,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:44:32,008 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:44:32,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825865937] [2021-05-01 06:44:32,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1825865937] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:44:32,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:44:32,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-01 06:44:32,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890420389] [2021-05-01 06:44:32,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-01 06:44:32,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:44:32,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-01 06:44:32,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2021-05-01 06:44:32,009 INFO L87 Difference]: Start difference. First operand 1619 states and 1972 transitions. Second operand has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 21 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) [2021-05-01 06:44:37,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:44:37,449 INFO L93 Difference]: Finished difference Result 2136 states and 2622 transitions. [2021-05-01 06:44:37,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-01 06:44:37,452 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 21 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 [2021-05-01 06:44:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:44:37,455 INFO L225 Difference]: With dead ends: 2136 [2021-05-01 06:44:37,455 INFO L226 Difference]: Without dead ends: 2134 [2021-05-01 06:44:37,456 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2328 ImplicationChecksByTransitivity, 3068.2ms TimeCoverageRelationStatistics Valid=1637, Invalid=5335, Unknown=0, NotChecked=0, Total=6972 [2021-05-01 06:44:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2021-05-01 06:44:38,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1723. [2021-05-01 06:44:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1662 states have (on average 1.2196149217809868) internal successors, (2027), 1688 states have internal predecessors, (2027), 42 states have call successors, (42), 19 states have call predecessors, (42), 18 states have return successors, (40), 15 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-01 06:44:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2109 transitions. [2021-05-01 06:44:38,380 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2109 transitions. Word has length 69 [2021-05-01 06:44:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:44:38,381 INFO L480 AbstractCegarLoop]: Abstraction has 1723 states and 2109 transitions. [2021-05-01 06:44:38,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 21 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) [2021-05-01 06:44:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2109 transitions. [2021-05-01 06:44:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:44:38,382 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:44:38,382 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] [2021-05-01 06:44:38,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-05-01 06:44:38,382 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:44:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:44:38,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1094779721, now seen corresponding path program 22 times [2021-05-01 06:44:38,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:44:38,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325357536] [2021-05-01 06:44:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:44:38,394 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:44:38,394 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:44:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:38,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:38,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:44:38,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:38,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:38,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:38,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:38,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:38,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:38,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:38,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:38,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:38,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:38,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:38,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:44:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:38,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:38,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:44:38,566 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:44:38,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325357536] [2021-05-01 06:44:38,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [325357536] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:44:38,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:44:38,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 06:44:38,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329508267] [2021-05-01 06:44:38,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-01 06:44:38,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:44:38,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-01 06:44:38,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-05-01 06:44:38,567 INFO L87 Difference]: Start difference. First operand 1723 states and 2109 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 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) [2021-05-01 06:44:41,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:44:41,275 INFO L93 Difference]: Finished difference Result 2012 states and 2463 transitions. [2021-05-01 06:44:41,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-01 06:44:41,277 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 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 [2021-05-01 06:44:41,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:44:41,280 INFO L225 Difference]: With dead ends: 2012 [2021-05-01 06:44:41,280 INFO L226 Difference]: Without dead ends: 1979 [2021-05-01 06:44:41,280 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 732.8ms TimeCoverageRelationStatistics Valid=511, Invalid=1381, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 06:44:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2021-05-01 06:44:42,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1730. [2021-05-01 06:44:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1669 states have (on average 1.21929298981426) internal successors, (2035), 1695 states have internal predecessors, (2035), 42 states have call successors, (42), 19 states have call predecessors, (42), 18 states have return successors, (40), 15 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-01 06:44:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2117 transitions. [2021-05-01 06:44:42,219 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2117 transitions. Word has length 69 [2021-05-01 06:44:42,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:44:42,219 INFO L480 AbstractCegarLoop]: Abstraction has 1730 states and 2117 transitions. [2021-05-01 06:44:42,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 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) [2021-05-01 06:44:42,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2117 transitions. [2021-05-01 06:44:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:44:42,221 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:44:42,221 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] [2021-05-01 06:44:42,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-05-01 06:44:42,221 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:44:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:44:42,221 INFO L82 PathProgramCache]: Analyzing trace with hash 2103292271, now seen corresponding path program 28 times [2021-05-01 06:44:42,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:44:42,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686685095] [2021-05-01 06:44:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:44:42,226 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:44:42,227 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:44:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:42,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:42,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:42,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:42,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:42,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:42,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:42,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:42,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:42,316 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:44:42,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:42,324 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:42,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:42,345 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:42,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:42,368 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 06:44:42,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:42,393 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:44:42,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:44:42,433 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:44:42,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:44:42,473 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:44:42,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:44:42,517 INFO L142 QuantifierPusher]: treesize reduction 44, result has 42.1 percent of original size [2021-05-01 06:44:42,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:44:42,597 INFO L142 QuantifierPusher]: treesize reduction 36, result has 57.6 percent of original size [2021-05-01 06:44:42,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:44:42,695 INFO L142 QuantifierPusher]: treesize reduction 36, result has 62.1 percent of original size [2021-05-01 06:44:42,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:44:42,779 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-05-01 06:44:42,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:44:42,837 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:44:42,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:44:42,885 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:44:42,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:44:42,935 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.2 percent of original size [2021-05-01 06:44:42,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:44:42,999 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:44:42,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:44:43,047 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:44:43,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:44:43,086 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.9 percent of original size [2021-05-01 06:44:43,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:44:43,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:43,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:43,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:43,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:43,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:43,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:43,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:43,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:44:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:43,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:43,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:44:43,297 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:44:43,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686685095] [2021-05-01 06:44:43,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1686685095] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:44:43,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:44:43,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 06:44:43,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717330262] [2021-05-01 06:44:43,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 06:44:43,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:44:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 06:44:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-05-01 06:44:43,298 INFO L87 Difference]: Start difference. First operand 1730 states and 2117 transitions. Second operand has 25 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 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) [2021-05-01 06:44:48,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:44:48,335 INFO L93 Difference]: Finished difference Result 1953 states and 2386 transitions. [2021-05-01 06:44:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-01 06:44:48,338 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 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 [2021-05-01 06:44:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:44:48,340 INFO L225 Difference]: With dead ends: 1953 [2021-05-01 06:44:48,340 INFO L226 Difference]: Without dead ends: 1951 [2021-05-01 06:44:48,341 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 3044.3ms TimeCoverageRelationStatistics Valid=584, Invalid=2956, Unknown=0, NotChecked=0, Total=3540 [2021-05-01 06:44:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2021-05-01 06:44:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1751. [2021-05-01 06:44:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1690 states have (on average 1.2207100591715976) internal successors, (2063), 1716 states have internal predecessors, (2063), 42 states have call successors, (42), 19 states have call predecessors, (42), 18 states have return successors, (40), 15 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-01 06:44:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2145 transitions. [2021-05-01 06:44:49,303 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2145 transitions. Word has length 69 [2021-05-01 06:44:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:44:49,303 INFO L480 AbstractCegarLoop]: Abstraction has 1751 states and 2145 transitions. [2021-05-01 06:44:49,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 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) [2021-05-01 06:44:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2145 transitions. [2021-05-01 06:44:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:44:49,304 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:44:49,304 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] [2021-05-01 06:44:49,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-05-01 06:44:49,305 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:44:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:44:49,305 INFO L82 PathProgramCache]: Analyzing trace with hash -671758409, now seen corresponding path program 23 times [2021-05-01 06:44:49,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:44:49,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863702526] [2021-05-01 06:44:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:44:49,310 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:44:49,311 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:44:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:49,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:49,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:49,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:49,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:49,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:49,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:49,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:49,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:49,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:49,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:49,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:49,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:44:49,439 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:44:49,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:44:49,471 INFO L142 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-05-01 06:44:49,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:44:49,486 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-05-01 06:44:49,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:44:49,492 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-05-01 06:44:49,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:44:49,500 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-05-01 06:44:49,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:44:49,510 INFO L142 QuantifierPusher]: treesize reduction 19, result has 42.4 percent of original size [2021-05-01 06:44:49,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:44:49,537 INFO L142 QuantifierPusher]: treesize reduction 19, result has 44.1 percent of original size [2021-05-01 06:44:49,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:44:49,547 INFO L142 QuantifierPusher]: treesize reduction 19, result has 38.7 percent of original size [2021-05-01 06:44:49,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:44:49,557 INFO L142 QuantifierPusher]: treesize reduction 19, result has 38.7 percent of original size [2021-05-01 06:44:49,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:44:49,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-05-01 06:44:49,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:44:49,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-05-01 06:44:49,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:44:49,644 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.9 percent of original size [2021-05-01 06:44:49,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:44:49,682 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 06:44:49,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:44:49,725 INFO L142 QuantifierPusher]: treesize reduction 11, result has 70.3 percent of original size [2021-05-01 06:44:49,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:44:49,750 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-05-01 06:44:49,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:44:49,815 INFO L142 QuantifierPusher]: treesize reduction 34, result has 62.2 percent of original size [2021-05-01 06:44:49,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:44:49,907 INFO L142 QuantifierPusher]: treesize reduction 24, result has 77.8 percent of original size [2021-05-01 06:44:49,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:44:50,028 INFO L142 QuantifierPusher]: treesize reduction 24, result has 77.4 percent of original size [2021-05-01 06:44:50,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:44:50,144 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.1 percent of original size [2021-05-01 06:44:50,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:44:50,202 INFO L142 QuantifierPusher]: treesize reduction 14, result has 75.4 percent of original size [2021-05-01 06:44:50,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:44:50,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:44:50,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:44:50,330 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:44:50,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:44:50,382 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-05-01 06:44:50,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:44:50,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:50,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:44:50,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:50,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:50,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:50,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:44:50,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:50,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:50,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:44:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:44:50,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:44:50,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:44:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:44:50,669 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:44:50,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863702526] [2021-05-01 06:44:50,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [863702526] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:44:50,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:44:50,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-01 06:44:50,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527697594] [2021-05-01 06:44:50,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-01 06:44:50,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:44:50,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-01 06:44:50,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2021-05-01 06:44:50,669 INFO L87 Difference]: Start difference. First operand 1751 states and 2145 transitions. Second operand has 27 states, 26 states have (on average 2.5) internal successors, (65), 25 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) [2021-05-01 06:45:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:45:02,420 INFO L93 Difference]: Finished difference Result 2150 states and 2617 transitions. [2021-05-01 06:45:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-01 06:45:02,424 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.5) internal successors, (65), 25 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 [2021-05-01 06:45:02,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:45:02,427 INFO L225 Difference]: With dead ends: 2150 [2021-05-01 06:45:02,427 INFO L226 Difference]: Without dead ends: 2148 [2021-05-01 06:45:02,427 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2599 ImplicationChecksByTransitivity, 5802.6ms TimeCoverageRelationStatistics Valid=765, Invalid=8165, Unknown=0, NotChecked=0, Total=8930 [2021-05-01 06:45:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2021-05-01 06:45:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1844. [2021-05-01 06:45:03,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1774 states have (on average 1.2198421645997746) internal successors, (2164), 1806 states have internal predecessors, (2164), 48 states have call successors, (48), 22 states have call predecessors, (48), 21 states have return successors, (46), 15 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-01 06:45:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2258 transitions. [2021-05-01 06:45:03,475 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2258 transitions. Word has length 69 [2021-05-01 06:45:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:45:03,475 INFO L480 AbstractCegarLoop]: Abstraction has 1844 states and 2258 transitions. [2021-05-01 06:45:03,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 2.5) internal successors, (65), 25 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) [2021-05-01 06:45:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2258 transitions. [2021-05-01 06:45:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:45:03,477 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:45:03,477 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] [2021-05-01 06:45:03,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-05-01 06:45:03,477 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:45:03,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:45:03,477 INFO L82 PathProgramCache]: Analyzing trace with hash 194554805, now seen corresponding path program 29 times [2021-05-01 06:45:03,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:45:03,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456316305] [2021-05-01 06:45:03,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:45:03,484 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:45:03,484 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:45:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:45:03,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:03,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:03,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:03,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:03,567 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:45:03,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:45:03,605 INFO L142 QuantifierPusher]: treesize reduction 10, result has 72.2 percent of original size [2021-05-01 06:45:03,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:45:03,643 INFO L142 QuantifierPusher]: treesize reduction 76, result has 25.5 percent of original size [2021-05-01 06:45:03,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:45:03,685 INFO L142 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-05-01 06:45:03,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:45:03,730 INFO L142 QuantifierPusher]: treesize reduction 16, result has 52.9 percent of original size [2021-05-01 06:45:03,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:45:03,772 INFO L142 QuantifierPusher]: treesize reduction 23, result has 11.5 percent of original size [2021-05-01 06:45:03,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:45:03,793 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-05-01 06:45:03,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:03,802 INFO L142 QuantifierPusher]: treesize reduction 74, result has 21.3 percent of original size [2021-05-01 06:45:03,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:45:03,853 INFO L142 QuantifierPusher]: treesize reduction 66, result has 39.4 percent of original size [2021-05-01 06:45:03,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:45:03,954 INFO L142 QuantifierPusher]: treesize reduction 66, result has 38.3 percent of original size [2021-05-01 06:45:03,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:04,040 INFO L142 QuantifierPusher]: treesize reduction 31, result has 18.4 percent of original size [2021-05-01 06:45:04,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:04,049 INFO L142 QuantifierPusher]: treesize reduction 31, result has 51.6 percent of original size [2021-05-01 06:45:04,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:45:04,062 INFO L142 QuantifierPusher]: treesize reduction 29, result has 65.5 percent of original size [2021-05-01 06:45:04,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:45:04,079 INFO L142 QuantifierPusher]: treesize reduction 36, result has 53.2 percent of original size [2021-05-01 06:45:04,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:04,089 INFO L142 QuantifierPusher]: treesize reduction 37, result has 52.6 percent of original size [2021-05-01 06:45:04,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:04,104 INFO L142 QuantifierPusher]: treesize reduction 71, result has 46.6 percent of original size [2021-05-01 06:45:04,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:45:04,187 INFO L142 QuantifierPusher]: treesize reduction 19, result has 68.3 percent of original size [2021-05-01 06:45:04,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:04,244 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-05-01 06:45:04,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:45:04,349 INFO L142 QuantifierPusher]: treesize reduction 46, result has 64.6 percent of original size [2021-05-01 06:45:04,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:45:04,508 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2021-05-01 06:45:04,511 INFO L142 QuantifierPusher]: treesize reduction 46, result has 67.4 percent of original size [2021-05-01 06:45:04,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 06:45:04,661 INFO L142 QuantifierPusher]: treesize reduction 46, result has 66.9 percent of original size [2021-05-01 06:45:04,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:45:04,786 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-05-01 06:45:04,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:04,865 INFO L142 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-05-01 06:45:04,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:45:04,936 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.9 percent of original size [2021-05-01 06:45:04,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:45:05,031 INFO L142 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-05-01 06:45:05,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:45:05,034 INFO L142 QuantifierPusher]: treesize reduction 16, result has 70.9 percent of original size [2021-05-01 06:45:05,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:45:05,103 INFO L142 QuantifierPusher]: treesize reduction 15, result has 80.8 percent of original size [2021-05-01 06:45:05,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:45:05,205 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.6 percent of original size [2021-05-01 06:45:05,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:45:05,303 INFO L142 QuantifierPusher]: treesize reduction 32, result has 67.0 percent of original size [2021-05-01 06:45:05,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:45:05,434 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-05-01 06:45:05,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:45:05,511 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:45:05,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:45:05,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:05,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:45:05,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:05,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:45:05,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:05,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:45:05,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:05,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:05,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:45:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:45:05,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:05,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:45:05,870 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:45:05,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456316305] [2021-05-01 06:45:05,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1456316305] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:45:05,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:45:05,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-01 06:45:05,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482355232] [2021-05-01 06:45:05,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-01 06:45:05,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:45:05,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-01 06:45:05,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2021-05-01 06:45:05,871 INFO L87 Difference]: Start difference. First operand 1844 states and 2258 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) [2021-05-01 06:45:13,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:45:13,955 INFO L93 Difference]: Finished difference Result 2130 states and 2592 transitions. [2021-05-01 06:45:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-01 06:45:13,958 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 [2021-05-01 06:45:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:45:13,961 INFO L225 Difference]: With dead ends: 2130 [2021-05-01 06:45:13,961 INFO L226 Difference]: Without dead ends: 2128 [2021-05-01 06:45:13,961 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 4686.7ms TimeCoverageRelationStatistics Valid=409, Invalid=3251, Unknown=0, NotChecked=0, Total=3660 [2021-05-01 06:45:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-05-01 06:45:15,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 1872. [2021-05-01 06:45:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1801 states have (on average 1.220988339811216) internal successors, (2199), 1833 states have internal predecessors, (2199), 48 states have call successors, (48), 23 states have call predecessors, (48), 22 states have return successors, (46), 15 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-01 06:45:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2293 transitions. [2021-05-01 06:45:15,040 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2293 transitions. Word has length 69 [2021-05-01 06:45:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:45:15,040 INFO L480 AbstractCegarLoop]: Abstraction has 1872 states and 2293 transitions. [2021-05-01 06:45:15,040 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) [2021-05-01 06:45:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2293 transitions. [2021-05-01 06:45:15,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:45:15,042 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:45:15,042 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] [2021-05-01 06:45:15,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-05-01 06:45:15,042 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:45:15,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:45:15,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2116173301, now seen corresponding path program 30 times [2021-05-01 06:45:15,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:45:15,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462063678] [2021-05-01 06:45:15,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:45:15,058 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:45:15,058 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:45:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:45:15,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:15,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:15,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:15,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:15,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:15,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:15,176 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-05-01 06:45:15,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:15,222 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-05-01 06:45:15,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:45:15,234 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-05-01 06:45:15,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:15,280 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-05-01 06:45:15,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:45:15,293 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-05-01 06:45:15,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:15,346 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-05-01 06:45:15,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:45:15,363 INFO L142 QuantifierPusher]: treesize reduction 57, result has 45.2 percent of original size [2021-05-01 06:45:15,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:45:15,425 INFO L142 QuantifierPusher]: treesize reduction 57, result has 40.6 percent of original size [2021-05-01 06:45:15,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:45:15,447 INFO L142 QuantifierPusher]: treesize reduction 45, result has 36.6 percent of original size [2021-05-01 06:45:15,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:45:15,496 INFO L142 QuantifierPusher]: treesize reduction 45, result has 28.6 percent of original size [2021-05-01 06:45:15,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:45:15,534 INFO L142 QuantifierPusher]: treesize reduction 47, result has 30.9 percent of original size [2021-05-01 06:45:15,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:45:15,545 INFO L142 QuantifierPusher]: treesize reduction 45, result has 38.4 percent of original size [2021-05-01 06:45:15,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:45:15,557 INFO L142 QuantifierPusher]: treesize reduction 45, result has 35.7 percent of original size [2021-05-01 06:45:15,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:45:15,570 INFO L142 QuantifierPusher]: treesize reduction 47, result has 30.9 percent of original size [2021-05-01 06:45:15,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:45:15,580 INFO L142 QuantifierPusher]: treesize reduction 47, result has 30.9 percent of original size [2021-05-01 06:45:15,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:45:15,592 INFO L142 QuantifierPusher]: treesize reduction 55, result has 46.1 percent of original size [2021-05-01 06:45:15,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:45:15,609 INFO L142 QuantifierPusher]: treesize reduction 55, result has 46.1 percent of original size [2021-05-01 06:45:15,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:45:15,628 INFO L142 QuantifierPusher]: treesize reduction 55, result has 46.1 percent of original size [2021-05-01 06:45:15,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:45:15,646 INFO L142 QuantifierPusher]: treesize reduction 55, result has 46.1 percent of original size [2021-05-01 06:45:15,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:45:15,668 INFO L142 QuantifierPusher]: treesize reduction 108, result has 46.5 percent of original size [2021-05-01 06:45:15,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 06:45:15,769 INFO L142 QuantifierPusher]: treesize reduction 67, result has 48.9 percent of original size [2021-05-01 06:45:15,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:45:15,852 INFO L142 QuantifierPusher]: treesize reduction 96, result has 46.1 percent of original size [2021-05-01 06:45:15,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:45:15,971 INFO L142 QuantifierPusher]: treesize reduction 90, result has 52.6 percent of original size [2021-05-01 06:45:15,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 06:45:16,099 INFO L142 QuantifierPusher]: treesize reduction 92, result has 60.2 percent of original size [2021-05-01 06:45:16,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-05-01 06:45:16,254 INFO L142 QuantifierPusher]: treesize reduction 92, result has 59.8 percent of original size [2021-05-01 06:45:16,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-05-01 06:45:16,394 INFO L142 QuantifierPusher]: treesize reduction 70, result has 44.4 percent of original size [2021-05-01 06:45:16,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:45:16,468 INFO L142 QuantifierPusher]: treesize reduction 69, result has 44.4 percent of original size [2021-05-01 06:45:16,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:45:16,547 INFO L142 QuantifierPusher]: treesize reduction 56, result has 62.4 percent of original size [2021-05-01 06:45:16,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:45:16,666 INFO L142 QuantifierPusher]: treesize reduction 66, result has 66.5 percent of original size [2021-05-01 06:45:16,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-05-01 06:45:16,826 INFO L142 QuantifierPusher]: treesize reduction 54, result has 58.5 percent of original size [2021-05-01 06:45:16,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:45:16,953 INFO L142 QuantifierPusher]: treesize reduction 46, result has 43.9 percent of original size [2021-05-01 06:45:16,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:45:17,023 INFO L142 QuantifierPusher]: treesize reduction 46, result has 43.9 percent of original size [2021-05-01 06:45:17,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:45:17,095 INFO L142 QuantifierPusher]: treesize reduction 19, result has 63.5 percent of original size [2021-05-01 06:45:17,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:45:17,149 INFO L142 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-05-01 06:45:17,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:45:17,197 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.1 percent of original size [2021-05-01 06:45:17,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:45:17,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:17,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:45:17,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:17,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:45:17,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:17,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:45:17,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:17,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:17,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:45:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:45:17,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:17,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:45:17,447 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:45:17,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462063678] [2021-05-01 06:45:17,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [462063678] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:45:17,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:45:17,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-01 06:45:17,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418881134] [2021-05-01 06:45:17,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-01 06:45:17,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:45:17,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-01 06:45:17,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-05-01 06:45:17,448 INFO L87 Difference]: Start difference. First operand 1872 states and 2293 transitions. Second operand has 29 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 27 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) [2021-05-01 06:45:24,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:45:24,757 INFO L93 Difference]: Finished difference Result 2159 states and 2630 transitions. [2021-05-01 06:45:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-01 06:45:24,762 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 27 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 [2021-05-01 06:45:24,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:45:24,765 INFO L225 Difference]: With dead ends: 2159 [2021-05-01 06:45:24,765 INFO L226 Difference]: Without dead ends: 2157 [2021-05-01 06:45:24,766 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 4 SyntacticMatches, 13 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 4694.0ms TimeCoverageRelationStatistics Valid=434, Invalid=2988, Unknown=0, NotChecked=0, Total=3422 [2021-05-01 06:45:24,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2021-05-01 06:45:25,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1903. [2021-05-01 06:45:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1830 states have (on average 1.221311475409836) internal successors, (2235), 1863 states have internal predecessors, (2235), 49 states have call successors, (49), 24 states have call predecessors, (49), 23 states have return successors, (47), 15 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-01 06:45:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 2331 transitions. [2021-05-01 06:45:25,923 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 2331 transitions. Word has length 69 [2021-05-01 06:45:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:45:25,923 INFO L480 AbstractCegarLoop]: Abstraction has 1903 states and 2331 transitions. [2021-05-01 06:45:25,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 27 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) [2021-05-01 06:45:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 2331 transitions. [2021-05-01 06:45:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:45:25,925 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:45:25,925 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] [2021-05-01 06:45:25,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-05-01 06:45:25,925 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:45:25,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:45:25,925 INFO L82 PathProgramCache]: Analyzing trace with hash -643408281, now seen corresponding path program 24 times [2021-05-01 06:45:25,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:45:25,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106561643] [2021-05-01 06:45:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:45:25,932 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:45:25,933 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:45:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:45:25,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:25,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:25,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:25,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:26,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:26,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:45:26,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:26,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:45:26,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:26,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:45:26,080 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:45:26,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:45:26,113 INFO L142 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-05-01 06:45:26,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:45:26,149 INFO L142 QuantifierPusher]: treesize reduction 17, result has 15.0 percent of original size [2021-05-01 06:45:26,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:45:26,167 INFO L142 QuantifierPusher]: treesize reduction 34, result has 26.1 percent of original size [2021-05-01 06:45:26,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:45:26,175 INFO L142 QuantifierPusher]: treesize reduction 44, result has 37.1 percent of original size [2021-05-01 06:45:26,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:45:26,215 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-05-01 06:45:26,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:26,223 INFO L142 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-05-01 06:45:26,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:45:26,285 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:45:26,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:45:26,335 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:45:26,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:45:26,407 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 06:45:26,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:45:26,463 INFO L142 QuantifierPusher]: treesize reduction 15, result has 69.4 percent of original size [2021-05-01 06:45:26,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:45:26,527 INFO L142 QuantifierPusher]: treesize reduction 15, result has 69.4 percent of original size [2021-05-01 06:45:26,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:45:26,616 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.4 percent of original size [2021-05-01 06:45:26,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:45:26,711 INFO L142 QuantifierPusher]: treesize reduction 37, result has 58.0 percent of original size [2021-05-01 06:45:26,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:45:26,802 INFO L142 QuantifierPusher]: treesize reduction 27, result has 77.3 percent of original size [2021-05-01 06:45:26,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-05-01 06:45:26,934 INFO L142 QuantifierPusher]: treesize reduction 27, result has 76.9 percent of original size [2021-05-01 06:45:26,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 06:45:27,072 INFO L142 QuantifierPusher]: treesize reduction 18, result has 73.9 percent of original size [2021-05-01 06:45:27,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:45:27,150 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.1 percent of original size [2021-05-01 06:45:27,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:45:27,229 INFO L142 QuantifierPusher]: treesize reduction 17, result has 81.1 percent of original size [2021-05-01 06:45:27,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:45:27,359 INFO L142 QuantifierPusher]: treesize reduction 19, result has 78.4 percent of original size [2021-05-01 06:45:27,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:45:27,492 INFO L142 QuantifierPusher]: treesize reduction 19, result has 77.4 percent of original size [2021-05-01 06:45:27,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:45:27,611 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.1 percent of original size [2021-05-01 06:45:27,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:45:27,708 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.1 percent of original size [2021-05-01 06:45:27,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:45:27,807 INFO L142 QuantifierPusher]: treesize reduction 14, result has 84.3 percent of original size [2021-05-01 06:45:27,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:45:27,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:45:27,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:45:28,001 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:45:28,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:45:28,068 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-05-01 06:45:28,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:45:28,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:28,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:45:28,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:28,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:45:28,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:28,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:45:28,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:28,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:28,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:45:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:45:28,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:28,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:45:28,389 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:45:28,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106561643] [2021-05-01 06:45:28,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [106561643] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:45:28,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:45:28,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-01 06:45:28,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912327659] [2021-05-01 06:45:28,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-01 06:45:28,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:45:28,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-01 06:45:28,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 06:45:28,390 INFO L87 Difference]: Start difference. First operand 1903 states and 2331 transitions. Second operand has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 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) [2021-05-01 06:45:31,581 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-05-01 06:45:32,320 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 37 [2021-05-01 06:45:33,370 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2021-05-01 06:45:33,883 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2021-05-01 06:45:34,366 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 37 [2021-05-01 06:45:35,630 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2021-05-01 06:45:35,859 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2021-05-01 06:45:36,351 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2021-05-01 06:45:36,798 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2021-05-01 06:45:37,680 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2021-05-01 06:45:38,302 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2021-05-01 06:45:39,342 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 42 [2021-05-01 06:45:41,333 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2021-05-01 06:45:42,142 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2021-05-01 06:45:42,378 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-05-01 06:45:42,678 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2021-05-01 06:45:42,895 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2021-05-01 06:45:43,196 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 42 [2021-05-01 06:45:43,722 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2021-05-01 06:45:44,524 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-05-01 06:45:45,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:45:45,168 INFO L93 Difference]: Finished difference Result 2407 states and 2926 transitions. [2021-05-01 06:45:45,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-01 06:45:45,171 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 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 [2021-05-01 06:45:45,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:45:45,174 INFO L225 Difference]: With dead ends: 2407 [2021-05-01 06:45:45,174 INFO L226 Difference]: Without dead ends: 2405 [2021-05-01 06:45:45,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2736 ImplicationChecksByTransitivity, 10397.1ms TimeCoverageRelationStatistics Valid=1161, Invalid=8739, Unknown=0, NotChecked=0, Total=9900 [2021-05-01 06:45:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2021-05-01 06:45:46,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 1968. [2021-05-01 06:45:46,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1890 states have (on average 1.2195767195767195) internal successors, (2305), 1926 states have internal predecessors, (2305), 52 states have call successors, (52), 26 states have call predecessors, (52), 25 states have return successors, (50), 15 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-01 06:45:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2407 transitions. [2021-05-01 06:45:46,372 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2407 transitions. Word has length 69 [2021-05-01 06:45:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:45:46,372 INFO L480 AbstractCegarLoop]: Abstraction has 1968 states and 2407 transitions. [2021-05-01 06:45:46,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 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) [2021-05-01 06:45:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2407 transitions. [2021-05-01 06:45:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:45:46,374 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:45:46,374 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] [2021-05-01 06:45:46,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-01 06:45:46,374 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:45:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:45:46,374 INFO L82 PathProgramCache]: Analyzing trace with hash -141333981, now seen corresponding path program 31 times [2021-05-01 06:45:46,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:45:46,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366785797] [2021-05-01 06:45:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:45:46,382 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:45:46,383 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:45:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:45:46,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:46,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:46,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:46,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:46,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:46,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:46,484 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:45:46,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:46,531 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:45:46,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:45:46,545 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-05-01 06:45:46,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:46,587 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-05-01 06:45:46,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:45:46,599 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-05-01 06:45:46,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:45:46,645 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-05-01 06:45:46,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:45:46,661 INFO L142 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size [2021-05-01 06:45:46,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:45:46,711 INFO L142 QuantifierPusher]: treesize reduction 14, result has 73.6 percent of original size [2021-05-01 06:45:46,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:45:46,730 INFO L142 QuantifierPusher]: treesize reduction 22, result has 63.3 percent of original size [2021-05-01 06:45:46,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:45:46,781 INFO L142 QuantifierPusher]: treesize reduction 22, result has 57.7 percent of original size [2021-05-01 06:45:46,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:45:46,802 INFO L142 QuantifierPusher]: treesize reduction 26, result has 40.9 percent of original size [2021-05-01 06:45:46,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:45:46,832 INFO L142 QuantifierPusher]: treesize reduction 28, result has 42.9 percent of original size [2021-05-01 06:45:46,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:45:46,841 INFO L142 QuantifierPusher]: treesize reduction 26, result has 51.9 percent of original size [2021-05-01 06:45:46,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:45:46,851 INFO L142 QuantifierPusher]: treesize reduction 26, result has 49.0 percent of original size [2021-05-01 06:45:46,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:45:46,861 INFO L142 QuantifierPusher]: treesize reduction 28, result has 42.9 percent of original size [2021-05-01 06:45:46,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:45:46,870 INFO L142 QuantifierPusher]: treesize reduction 28, result has 42.9 percent of original size [2021-05-01 06:45:46,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:45:46,881 INFO L142 QuantifierPusher]: treesize reduction 43, result has 46.9 percent of original size [2021-05-01 06:45:46,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:45:46,894 INFO L142 QuantifierPusher]: treesize reduction 40, result has 52.4 percent of original size [2021-05-01 06:45:46,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:45:46,955 INFO L142 QuantifierPusher]: treesize reduction 50, result has 63.5 percent of original size [2021-05-01 06:45:46,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:45:47,032 INFO L142 QuantifierPusher]: treesize reduction 49, result has 66.2 percent of original size [2021-05-01 06:45:47,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 06:45:47,123 INFO L142 QuantifierPusher]: treesize reduction 51, result has 62.5 percent of original size [2021-05-01 06:45:47,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-05-01 06:45:47,226 INFO L142 QuantifierPusher]: treesize reduction 51, result has 62.2 percent of original size [2021-05-01 06:45:47,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:45:47,313 INFO L142 QuantifierPusher]: treesize reduction 46, result has 48.9 percent of original size [2021-05-01 06:45:47,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:45:47,375 INFO L142 QuantifierPusher]: treesize reduction 46, result has 48.9 percent of original size [2021-05-01 06:45:47,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:45:47,441 INFO L142 QuantifierPusher]: treesize reduction 71, result has 60.1 percent of original size [2021-05-01 06:45:47,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-01 06:45:47,588 INFO L142 QuantifierPusher]: treesize reduction 62, result has 41.5 percent of original size [2021-05-01 06:45:47,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:45:47,591 INFO L142 QuantifierPusher]: treesize reduction 61, result has 41.9 percent of original size [2021-05-01 06:45:47,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:45:47,661 INFO L142 QuantifierPusher]: treesize reduction 61, result has 49.6 percent of original size [2021-05-01 06:45:47,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:45:47,749 INFO L142 QuantifierPusher]: treesize reduction 61, result has 41.9 percent of original size [2021-05-01 06:45:47,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:45:47,752 INFO L142 QuantifierPusher]: treesize reduction 61, result has 41.9 percent of original size [2021-05-01 06:45:47,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 06:45:47,822 INFO L142 QuantifierPusher]: treesize reduction 50, result has 60.3 percent of original size [2021-05-01 06:45:47,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:45:47,905 INFO L142 QuantifierPusher]: treesize reduction 40, result has 65.5 percent of original size [2021-05-01 06:45:47,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:45:47,997 INFO L142 QuantifierPusher]: treesize reduction 41, result has 71.5 percent of original size [2021-05-01 06:45:47,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-05-01 06:45:48,117 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-05-01 06:45:48,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:45:48,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:45:48,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:45:48,247 INFO L142 QuantifierPusher]: treesize reduction 19, result has 65.5 percent of original size [2021-05-01 06:45:48,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:45:48,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:48,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:45:48,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:48,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:45:48,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:48,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:45:48,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:48,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:48,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:45:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:45:48,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:48,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:45:48,590 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:45:48,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366785797] [2021-05-01 06:45:48,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [366785797] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:45:48,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:45:48,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 06:45:48,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285398471] [2021-05-01 06:45:48,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 06:45:48,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:45:48,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 06:45:48,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2021-05-01 06:45:48,591 INFO L87 Difference]: Start difference. First operand 1968 states and 2407 transitions. Second operand has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 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) [2021-05-01 06:45:57,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:45:57,418 INFO L93 Difference]: Finished difference Result 2384 states and 2900 transitions. [2021-05-01 06:45:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-01 06:45:57,421 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 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 [2021-05-01 06:45:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:45:57,425 INFO L225 Difference]: With dead ends: 2384 [2021-05-01 06:45:57,425 INFO L226 Difference]: Without dead ends: 2382 [2021-05-01 06:45:57,425 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 6 SyntacticMatches, 11 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 4321.0ms TimeCoverageRelationStatistics Valid=345, Invalid=3315, Unknown=0, NotChecked=0, Total=3660 [2021-05-01 06:45:57,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2021-05-01 06:45:58,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 1972. [2021-05-01 06:45:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1892 states have (on average 1.2188160676532769) internal successors, (2306), 1929 states have internal predecessors, (2306), 53 states have call successors, (53), 27 states have call predecessors, (53), 26 states have return successors, (51), 15 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-01 06:45:58,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2410 transitions. [2021-05-01 06:45:58,579 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2410 transitions. Word has length 69 [2021-05-01 06:45:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:45:58,579 INFO L480 AbstractCegarLoop]: Abstraction has 1972 states and 2410 transitions. [2021-05-01 06:45:58,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 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) [2021-05-01 06:45:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2410 transitions. [2021-05-01 06:45:58,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:45:58,581 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:45:58,581 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] [2021-05-01 06:45:58,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-05-01 06:45:58,581 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:45:58,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:45:58,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1309954697, now seen corresponding path program 25 times [2021-05-01 06:45:58,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:45:58,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943196218] [2021-05-01 06:45:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:45:58,588 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:45:58,589 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:45:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:45:58,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:58,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:45:58,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:58,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:58,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:58,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:45:58,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:58,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:45:58,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:45:58,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:45:58,713 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:45:58,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:45:58,746 INFO L142 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-05-01 06:45:58,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:45:58,782 INFO L142 QuantifierPusher]: treesize reduction 17, result has 15.0 percent of original size [2021-05-01 06:45:58,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:45:58,801 INFO L142 QuantifierPusher]: treesize reduction 18, result has 28.0 percent of original size [2021-05-01 06:45:58,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:58,808 INFO L142 QuantifierPusher]: treesize reduction 37, result has 37.3 percent of original size [2021-05-01 06:45:58,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:45:58,871 INFO L142 QuantifierPusher]: treesize reduction 37, result has 33.9 percent of original size [2021-05-01 06:45:58,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:45:58,938 INFO L142 QuantifierPusher]: treesize reduction 39, result has 27.8 percent of original size [2021-05-01 06:45:58,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:45:58,981 INFO L142 QuantifierPusher]: treesize reduction 23, result has 23.3 percent of original size [2021-05-01 06:45:58,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:45:58,988 INFO L142 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size [2021-05-01 06:45:58,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:45:59,032 INFO L142 QuantifierPusher]: treesize reduction 6, result has 85.0 percent of original size [2021-05-01 06:45:59,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:45:59,113 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-05-01 06:45:59,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:45:59,199 INFO L142 QuantifierPusher]: treesize reduction 18, result has 71.9 percent of original size [2021-05-01 06:45:59,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:45:59,275 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.6 percent of original size [2021-05-01 06:45:59,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:45:59,368 INFO L142 QuantifierPusher]: treesize reduction 48, result has 55.1 percent of original size [2021-05-01 06:45:59,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:45:59,475 INFO L142 QuantifierPusher]: treesize reduction 40, result has 69.5 percent of original size [2021-05-01 06:45:59,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 06:45:59,627 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2021-05-01 06:45:59,630 INFO L142 QuantifierPusher]: treesize reduction 40, result has 68.8 percent of original size [2021-05-01 06:45:59,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:45:59,767 INFO L142 QuantifierPusher]: treesize reduction 16, result has 78.7 percent of original size [2021-05-01 06:45:59,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:45:59,846 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.0 percent of original size [2021-05-01 06:45:59,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:45:59,933 INFO L142 QuantifierPusher]: treesize reduction 43, result has 73.6 percent of original size [2021-05-01 06:45:59,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-05-01 06:46:00,108 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2021-05-01 06:46:00,110 INFO L142 QuantifierPusher]: treesize reduction 34, result has 62.6 percent of original size [2021-05-01 06:46:00,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:46:00,113 INFO L142 QuantifierPusher]: treesize reduction 35, result has 61.1 percent of original size [2021-05-01 06:46:00,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:46:00,216 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.0 percent of original size [2021-05-01 06:46:00,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:46:00,330 INFO L142 QuantifierPusher]: treesize reduction 35, result has 61.1 percent of original size [2021-05-01 06:46:00,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:46:00,333 INFO L142 QuantifierPusher]: treesize reduction 35, result has 61.1 percent of original size [2021-05-01 06:46:00,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:46:00,426 INFO L142 QuantifierPusher]: treesize reduction 30, result has 73.0 percent of original size [2021-05-01 06:46:00,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 06:46:00,535 INFO L142 QuantifierPusher]: treesize reduction 26, result has 74.3 percent of original size [2021-05-01 06:46:00,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:46:00,648 INFO L142 QuantifierPusher]: treesize reduction 38, result has 66.4 percent of original size [2021-05-01 06:46:00,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:46:00,806 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:46:00,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:46:00,875 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-05-01 06:46:00,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:46:00,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:00,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:46:01,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:01,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:46:01,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:01,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:46:01,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:01,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:01,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:46:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:01,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:01,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:46:01,224 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:46:01,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943196218] [2021-05-01 06:46:01,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [943196218] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:46:01,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:46:01,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-01 06:46:01,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606340573] [2021-05-01 06:46:01,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-01 06:46:01,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:46:01,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-01 06:46:01,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 06:46:01,225 INFO L87 Difference]: Start difference. First operand 1972 states and 2410 transitions. Second operand has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 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) [2021-05-01 06:46:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:46:11,637 INFO L93 Difference]: Finished difference Result 2360 states and 2868 transitions. [2021-05-01 06:46:11,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-01 06:46:11,640 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 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 [2021-05-01 06:46:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:46:11,643 INFO L225 Difference]: With dead ends: 2360 [2021-05-01 06:46:11,643 INFO L226 Difference]: Without dead ends: 2358 [2021-05-01 06:46:11,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 6446.2ms TimeCoverageRelationStatistics Valid=487, Invalid=5213, Unknown=0, NotChecked=0, Total=5700 [2021-05-01 06:46:11,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-05-01 06:46:12,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2023. [2021-05-01 06:46:12,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 1943 states have (on average 1.2213072568193515) internal successors, (2373), 1980 states have internal predecessors, (2373), 53 states have call successors, (53), 27 states have call predecessors, (53), 26 states have return successors, (51), 15 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-01 06:46:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2477 transitions. [2021-05-01 06:46:12,814 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2477 transitions. Word has length 69 [2021-05-01 06:46:12,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:46:12,814 INFO L480 AbstractCegarLoop]: Abstraction has 2023 states and 2477 transitions. [2021-05-01 06:46:12,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 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) [2021-05-01 06:46:12,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2477 transitions. [2021-05-01 06:46:12,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 06:46:12,816 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:46:12,816 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] [2021-05-01 06:46:12,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-05-01 06:46:12,816 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:46:12,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:46:12,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1869063899, now seen corresponding path program 26 times [2021-05-01 06:46:12,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:46:12,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021378705] [2021-05-01 06:46:12,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:46:12,822 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:46:12,823 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:46:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:12,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:12,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:12,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:12,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:46:12,905 INFO L142 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-05-01 06:46:12,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:46:12,938 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 06:46:12,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:46:12,959 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-05-01 06:46:12,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:46:12,968 INFO L142 QuantifierPusher]: treesize reduction 20, result has 62.3 percent of original size [2021-05-01 06:46:12,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:46:13,024 INFO L142 QuantifierPusher]: treesize reduction 20, result has 62.3 percent of original size [2021-05-01 06:46:13,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:46:13,087 INFO L142 QuantifierPusher]: treesize reduction 22, result has 67.6 percent of original size [2021-05-01 06:46:13,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:46:13,158 INFO L142 QuantifierPusher]: treesize reduction 50, result has 52.4 percent of original size [2021-05-01 06:46:13,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:46:13,228 INFO L142 QuantifierPusher]: treesize reduction 86, result has 35.8 percent of original size [2021-05-01 06:46:13,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:46:13,318 INFO L142 QuantifierPusher]: treesize reduction 86, result has 34.4 percent of original size [2021-05-01 06:46:13,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:46:13,401 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-05-01 06:46:13,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:46:13,470 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.3 percent of original size [2021-05-01 06:46:13,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:46:13,531 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.6 percent of original size [2021-05-01 06:46:13,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:46:13,603 INFO L142 QuantifierPusher]: treesize reduction 20, result has 73.0 percent of original size [2021-05-01 06:46:13,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:46:13,606 INFO L142 QuantifierPusher]: treesize reduction 20, result has 73.0 percent of original size [2021-05-01 06:46:13,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:46:13,662 INFO L142 QuantifierPusher]: treesize reduction 20, result has 77.8 percent of original size [2021-05-01 06:46:13,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:46:13,733 INFO L142 QuantifierPusher]: treesize reduction 20, result has 73.0 percent of original size [2021-05-01 06:46:13,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:46:13,735 INFO L142 QuantifierPusher]: treesize reduction 20, result has 73.0 percent of original size [2021-05-01 06:46:13,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:46:13,797 INFO L142 QuantifierPusher]: treesize reduction 20, result has 77.8 percent of original size [2021-05-01 06:46:13,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:46:13,877 INFO L142 QuantifierPusher]: treesize reduction 20, result has 73.0 percent of original size [2021-05-01 06:46:13,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:46:13,880 INFO L142 QuantifierPusher]: treesize reduction 20, result has 73.0 percent of original size [2021-05-01 06:46:13,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:46:13,961 INFO L142 QuantifierPusher]: treesize reduction 20, result has 81.1 percent of original size [2021-05-01 06:46:13,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:46:14,075 INFO L142 QuantifierPusher]: treesize reduction 20, result has 81.1 percent of original size [2021-05-01 06:46:14,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:46:14,176 INFO L142 QuantifierPusher]: treesize reduction 15, result has 83.3 percent of original size [2021-05-01 06:46:14,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 06:46:14,269 INFO L142 QuantifierPusher]: treesize reduction 13, result has 72.3 percent of original size [2021-05-01 06:46:14,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:46:14,338 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:46:14,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:46:14,401 INFO L142 QuantifierPusher]: treesize reduction 32, result has 54.3 percent of original size [2021-05-01 06:46:14,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:46:14,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:14,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:46:14,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:14,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:46:14,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:14,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:46:14,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:14,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:14,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:46:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:14,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:14,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:46:14,702 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:46:14,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021378705] [2021-05-01 06:46:14,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1021378705] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:46:14,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:46:14,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-01 06:46:14,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554750702] [2021-05-01 06:46:14,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-01 06:46:14,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:46:14,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-01 06:46:14,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2021-05-01 06:46:14,704 INFO L87 Difference]: Start difference. First operand 2023 states and 2477 transitions. Second operand has 29 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 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) [2021-05-01 06:46:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:46:22,240 INFO L93 Difference]: Finished difference Result 2337 states and 2853 transitions. [2021-05-01 06:46:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-01 06:46:22,244 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 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 [2021-05-01 06:46:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:46:22,247 INFO L225 Difference]: With dead ends: 2337 [2021-05-01 06:46:22,247 INFO L226 Difference]: Without dead ends: 2335 [2021-05-01 06:46:22,247 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 3726.0ms TimeCoverageRelationStatistics Valid=320, Invalid=2986, Unknown=0, NotChecked=0, Total=3306 [2021-05-01 06:46:22,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-05-01 06:46:23,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 1935. [2021-05-01 06:46:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1866 states have (on average 1.2245444801714898) internal successors, (2285), 1897 states have internal predecessors, (2285), 45 states have call successors, (45), 24 states have call predecessors, (45), 23 states have return successors, (43), 13 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-01 06:46:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2373 transitions. [2021-05-01 06:46:23,428 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2373 transitions. Word has length 69 [2021-05-01 06:46:23,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:46:23,428 INFO L480 AbstractCegarLoop]: Abstraction has 1935 states and 2373 transitions. [2021-05-01 06:46:23,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 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) [2021-05-01 06:46:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2373 transitions. [2021-05-01 06:46:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:46:23,429 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:46:23,430 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] [2021-05-01 06:46:23,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-05-01 06:46:23,430 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:46:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:46:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash -306682746, now seen corresponding path program 16 times [2021-05-01 06:46:23,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:46:23,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034285510] [2021-05-01 06:46:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:46:23,437 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:46:23,438 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:46:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:23,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:23,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:23,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:23,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:46:23,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:23,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:46:23,547 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:46:23,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:46:23,585 INFO L142 QuantifierPusher]: treesize reduction 30, result has 62.5 percent of original size [2021-05-01 06:46:23,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:46:23,645 INFO L142 QuantifierPusher]: treesize reduction 24, result has 11.1 percent of original size [2021-05-01 06:46:23,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:46:23,663 INFO L142 QuantifierPusher]: treesize reduction 25, result has 21.9 percent of original size [2021-05-01 06:46:23,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:46:23,672 INFO L142 QuantifierPusher]: treesize reduction 73, result has 29.8 percent of original size [2021-05-01 06:46:23,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:46:23,717 INFO L142 QuantifierPusher]: treesize reduction 74, result has 36.2 percent of original size [2021-05-01 06:46:23,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:46:23,807 INFO L142 QuantifierPusher]: treesize reduction 73, result has 41.1 percent of original size [2021-05-01 06:46:23,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:46:23,908 INFO L142 QuantifierPusher]: treesize reduction 73, result has 40.7 percent of original size [2021-05-01 06:46:23,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:46:24,000 INFO L142 QuantifierPusher]: treesize reduction 51, result has 46.9 percent of original size [2021-05-01 06:46:24,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:46:24,075 INFO L142 QuantifierPusher]: treesize reduction 55, result has 50.9 percent of original size [2021-05-01 06:46:24,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:46:24,158 INFO L142 QuantifierPusher]: treesize reduction 58, result has 59.2 percent of original size [2021-05-01 06:46:24,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:46:24,273 INFO L142 QuantifierPusher]: treesize reduction 58, result has 59.2 percent of original size [2021-05-01 06:46:24,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 06:46:24,277 INFO L142 QuantifierPusher]: treesize reduction 63, result has 63.2 percent of original size [2021-05-01 06:46:24,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 06:46:24,426 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2021-05-01 06:46:24,434 INFO L142 QuantifierPusher]: treesize reduction 60, result has 67.6 percent of original size [2021-05-01 06:46:24,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-05-01 06:46:24,599 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2021-05-01 06:46:24,602 INFO L142 QuantifierPusher]: treesize reduction 60, result has 67.0 percent of original size [2021-05-01 06:46:24,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-05-01 06:46:24,776 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2021-05-01 06:46:24,780 INFO L142 QuantifierPusher]: treesize reduction 41, result has 68.2 percent of original size [2021-05-01 06:46:24,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:46:24,937 INFO L142 QuantifierPusher]: treesize reduction 41, result has 67.7 percent of original size [2021-05-01 06:46:24,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:46:25,087 INFO L142 QuantifierPusher]: treesize reduction 41, result has 66.9 percent of original size [2021-05-01 06:46:25,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:46:25,232 INFO L142 QuantifierPusher]: treesize reduction 41, result has 62.0 percent of original size [2021-05-01 06:46:25,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:46:25,342 INFO L142 QuantifierPusher]: treesize reduction 45, result has 60.2 percent of original size [2021-05-01 06:46:25,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:46:25,446 INFO L142 QuantifierPusher]: treesize reduction 115, result has 37.5 percent of original size [2021-05-01 06:46:25,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:46:25,588 INFO L142 QuantifierPusher]: treesize reduction 38, result has 61.2 percent of original size [2021-05-01 06:46:25,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:46:25,696 INFO L142 QuantifierPusher]: treesize reduction 55, result has 58.0 percent of original size [2021-05-01 06:46:25,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:46:25,838 INFO L142 QuantifierPusher]: treesize reduction 47, result has 67.8 percent of original size [2021-05-01 06:46:25,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-05-01 06:46:26,051 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2021-05-01 06:46:26,055 INFO L142 QuantifierPusher]: treesize reduction 47, result has 67.4 percent of original size [2021-05-01 06:46:26,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 06:46:26,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:46:26,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:46:26,323 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:46:26,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:46:26,408 INFO L142 QuantifierPusher]: treesize reduction 21, result has 48.8 percent of original size [2021-05-01 06:46:26,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:46:26,500 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-05-01 06:46:26,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:46:26,605 INFO L142 QuantifierPusher]: treesize reduction 26, result has 68.3 percent of original size [2021-05-01 06:46:26,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:46:26,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:26,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:46:26,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:26,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:46:26,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:26,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:46:26,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:26,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:46:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:27,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:27,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:27,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-01 06:46:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:27,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:27,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:27,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-01 06:46:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:27,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:27,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:46:27,011 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:46:27,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034285510] [2021-05-01 06:46:27,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2034285510] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:46:27,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:46:27,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-01 06:46:27,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897185023] [2021-05-01 06:46:27,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-01 06:46:27,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:46:27,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-01 06:46:27,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2021-05-01 06:46:27,012 INFO L87 Difference]: Start difference. First operand 1935 states and 2373 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) [2021-05-01 06:46:28,335 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-05-01 06:46:28,635 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2021-05-01 06:46:29,007 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2021-05-01 06:46:29,482 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2021-05-01 06:46:30,090 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-05-01 06:46:30,576 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2021-05-01 06:46:31,274 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2021-05-01 06:46:33,165 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2021-05-01 06:46:33,821 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-05-01 06:46:34,709 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2021-05-01 06:46:35,906 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2021-05-01 06:46:36,510 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2021-05-01 06:46:36,737 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-05-01 06:46:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:46:37,481 INFO L93 Difference]: Finished difference Result 2120 states and 2594 transitions. [2021-05-01 06:46:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-01 06:46:37,485 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 [2021-05-01 06:46:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:46:37,488 INFO L225 Difference]: With dead ends: 2120 [2021-05-01 06:46:37,488 INFO L226 Difference]: Without dead ends: 2077 [2021-05-01 06:46:37,489 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 8281.0ms TimeCoverageRelationStatistics Valid=525, Invalid=5175, Unknown=0, NotChecked=0, Total=5700 [2021-05-01 06:46:37,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2021-05-01 06:46:38,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2032. [2021-05-01 06:46:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 1959 states have (on average 1.2256253190403268) internal successors, (2401), 1993 states have internal predecessors, (2401), 49 states have call successors, (49), 24 states have call predecessors, (49), 23 states have return successors, (47), 14 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-01 06:46:38,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 2497 transitions. [2021-05-01 06:46:38,700 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 2497 transitions. Word has length 72 [2021-05-01 06:46:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:46:38,700 INFO L480 AbstractCegarLoop]: Abstraction has 2032 states and 2497 transitions. [2021-05-01 06:46:38,700 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) [2021-05-01 06:46:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 2497 transitions. [2021-05-01 06:46:38,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:46:38,702 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:46:38,702 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] [2021-05-01 06:46:38,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-05-01 06:46:38,702 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:46:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:46:38,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1475670698, now seen corresponding path program 17 times [2021-05-01 06:46:38,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:46:38,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128094798] [2021-05-01 06:46:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:46:38,712 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:46:38,713 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:46:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:38,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:38,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:38,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:38,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:46:38,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:38,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:46:38,804 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:46:38,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:46:38,838 INFO L142 QuantifierPusher]: treesize reduction 30, result has 62.5 percent of original size [2021-05-01 06:46:38,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:46:38,891 INFO L142 QuantifierPusher]: treesize reduction 24, result has 11.1 percent of original size [2021-05-01 06:46:38,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:46:38,907 INFO L142 QuantifierPusher]: treesize reduction 45, result has 21.1 percent of original size [2021-05-01 06:46:38,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:46:38,915 INFO L142 QuantifierPusher]: treesize reduction 46, result has 34.3 percent of original size [2021-05-01 06:46:38,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:46:38,953 INFO L142 QuantifierPusher]: treesize reduction 52, result has 31.6 percent of original size [2021-05-01 06:46:38,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:46:38,956 INFO L142 QuantifierPusher]: treesize reduction 50, result has 44.4 percent of original size [2021-05-01 06:46:38,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:46:39,044 INFO L142 QuantifierPusher]: treesize reduction 71, result has 41.8 percent of original size [2021-05-01 06:46:39,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:46:39,149 INFO L142 QuantifierPusher]: treesize reduction 55, result has 57.0 percent of original size [2021-05-01 06:46:39,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:46:39,281 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2021-05-01 06:46:39,284 INFO L142 QuantifierPusher]: treesize reduction 57, result has 55.1 percent of original size [2021-05-01 06:46:39,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:46:39,396 INFO L142 QuantifierPusher]: treesize reduction 49, result has 31.0 percent of original size [2021-05-01 06:46:39,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:46:39,436 INFO L142 QuantifierPusher]: treesize reduction 65, result has 44.0 percent of original size [2021-05-01 06:46:39,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:46:39,510 INFO L142 QuantifierPusher]: treesize reduction 65, result has 54.5 percent of original size [2021-05-01 06:46:39,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 06:46:39,613 INFO L142 QuantifierPusher]: treesize reduction 56, result has 64.6 percent of original size [2021-05-01 06:46:39,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-05-01 06:46:39,755 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2021-05-01 06:46:39,759 INFO L142 QuantifierPusher]: treesize reduction 65, result has 63.1 percent of original size [2021-05-01 06:46:39,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 06:46:39,887 INFO L142 QuantifierPusher]: treesize reduction 65, result has 62.4 percent of original size [2021-05-01 06:46:39,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 06:46:40,005 INFO L142 QuantifierPusher]: treesize reduction 46, result has 58.9 percent of original size [2021-05-01 06:46:40,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:46:40,114 INFO L142 QuantifierPusher]: treesize reduction 46, result has 58.2 percent of original size [2021-05-01 06:46:40,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:46:40,236 INFO L142 QuantifierPusher]: treesize reduction 46, result has 57.0 percent of original size [2021-05-01 06:46:40,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:46:40,344 INFO L142 QuantifierPusher]: treesize reduction 46, result has 49.5 percent of original size [2021-05-01 06:46:40,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:46:40,437 INFO L142 QuantifierPusher]: treesize reduction 49, result has 48.4 percent of original size [2021-05-01 06:46:40,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:46:40,520 INFO L142 QuantifierPusher]: treesize reduction 78, result has 53.0 percent of original size [2021-05-01 06:46:40,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:46:40,707 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2021-05-01 06:46:40,709 INFO L142 QuantifierPusher]: treesize reduction 38, result has 56.8 percent of original size [2021-05-01 06:46:40,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:46:40,793 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:46:40,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:46:40,870 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:46:40,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:46:40,943 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-05-01 06:46:40,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:46:41,035 INFO L142 QuantifierPusher]: treesize reduction 19, result has 58.7 percent of original size [2021-05-01 06:46:41,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:46:41,124 INFO L142 QuantifierPusher]: treesize reduction 26, result has 69.0 percent of original size [2021-05-01 06:46:41,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:46:41,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:41,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:46:41,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:41,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:46:41,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:41,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:46:41,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:41,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:46:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:41,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:41,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:41,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-01 06:46:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:41,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:41,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-01 06:46:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:41,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:41,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:46:41,522 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:46:41,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128094798] [2021-05-01 06:46:41,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1128094798] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:46:41,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:46:41,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-01 06:46:41,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261893442] [2021-05-01 06:46:41,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-01 06:46:41,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:46:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-01 06:46:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 06:46:41,523 INFO L87 Difference]: Start difference. First operand 2032 states and 2497 transitions. Second operand has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 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) [2021-05-01 06:46:42,793 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-05-01 06:46:43,123 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-05-01 06:46:43,679 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-05-01 06:46:44,373 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-05-01 06:46:44,729 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-05-01 06:46:44,981 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-05-01 06:46:45,218 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-05-01 06:46:47,952 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-05-01 06:46:48,371 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-05-01 06:46:49,254 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-05-01 06:46:49,996 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-05-01 06:46:50,533 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-05-01 06:46:50,922 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2021-05-01 06:46:51,141 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2021-05-01 06:46:51,532 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-05-01 06:46:51,771 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-05-01 06:46:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:46:52,322 INFO L93 Difference]: Finished difference Result 2074 states and 2541 transitions. [2021-05-01 06:46:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-01 06:46:52,326 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), 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 [2021-05-01 06:46:52,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:46:52,329 INFO L225 Difference]: With dead ends: 2074 [2021-05-01 06:46:52,329 INFO L226 Difference]: Without dead ends: 1997 [2021-05-01 06:46:52,330 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 7973.7ms TimeCoverageRelationStatistics Valid=513, Invalid=5187, Unknown=0, NotChecked=0, Total=5700 [2021-05-01 06:46:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2021-05-01 06:46:53,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1815. [2021-05-01 06:46:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1756 states have (on average 1.2317767653758542) internal successors, (2163), 1784 states have internal predecessors, (2163), 39 states have call successors, (39), 20 states have call predecessors, (39), 19 states have return successors, (38), 10 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-01 06:46:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2240 transitions. [2021-05-01 06:46:53,438 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2240 transitions. Word has length 72 [2021-05-01 06:46:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:46:53,439 INFO L480 AbstractCegarLoop]: Abstraction has 1815 states and 2240 transitions. [2021-05-01 06:46:53,439 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), 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) [2021-05-01 06:46:53,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2240 transitions. [2021-05-01 06:46:53,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-01 06:46:53,440 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:46:53,440 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] [2021-05-01 06:46:53,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-05-01 06:46:53,441 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:46:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:46:53,441 INFO L82 PathProgramCache]: Analyzing trace with hash -501669198, now seen corresponding path program 7 times [2021-05-01 06:46:53,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:46:53,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673049077] [2021-05-01 06:46:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:46:53,447 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:46:53,448 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:46:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:53,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:53,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:53,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:53,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:46:53,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:53,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:46:53,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:53,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:46:53,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:53,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:46:53,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:53,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:46:53,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:53,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:46:53,636 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:46:53,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:46:53,646 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-05-01 06:46:53,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:46:53,659 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-05-01 06:46:53,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:46:53,674 INFO L142 QuantifierPusher]: treesize reduction 31, result has 67.4 percent of original size [2021-05-01 06:46:53,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:46:53,811 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2021-05-01 06:46:53,814 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-05-01 06:46:53,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:46:53,833 INFO L142 QuantifierPusher]: treesize reduction 14, result has 62.2 percent of original size [2021-05-01 06:46:53,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:46:53,855 INFO L142 QuantifierPusher]: treesize reduction 33, result has 68.6 percent of original size [2021-05-01 06:46:53,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:46:53,919 INFO L142 QuantifierPusher]: treesize reduction 31, result has 65.6 percent of original size [2021-05-01 06:46:53,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:46:54,028 INFO L142 QuantifierPusher]: treesize reduction 33, result has 62.9 percent of original size [2021-05-01 06:46:54,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:46:54,107 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:46:54,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:46:54,153 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 06:46:54,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:46:54,208 INFO L142 QuantifierPusher]: treesize reduction 25, result has 51.0 percent of original size [2021-05-01 06:46:54,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:46:54,273 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.0 percent of original size [2021-05-01 06:46:54,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:46:54,404 INFO L142 QuantifierPusher]: treesize reduction 38, result has 62.7 percent of original size [2021-05-01 06:46:54,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:46:54,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:54,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:46:54,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:54,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:46:54,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:54,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:46:54,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:54,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:54,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:46:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:54,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:54,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:54,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-05-01 06:46:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:54,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:54,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-05-01 06:46:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:54,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:54,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-01 06:46:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:46:54,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:46:54,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:46:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:46:54,737 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:46:54,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673049077] [2021-05-01 06:46:54,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1673049077] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:46:54,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:46:54,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 06:46:54,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823710690] [2021-05-01 06:46:54,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 06:46:54,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:46:54,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 06:46:54,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:46:54,738 INFO L87 Difference]: Start difference. First operand 1815 states and 2240 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) [2021-05-01 06:46:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:46:58,919 INFO L93 Difference]: Finished difference Result 1936 states and 2378 transitions. [2021-05-01 06:46:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-01 06:46:58,922 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 [2021-05-01 06:46:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:46:58,925 INFO L225 Difference]: With dead ends: 1936 [2021-05-01 06:46:58,925 INFO L226 Difference]: Without dead ends: 1934 [2021-05-01 06:46:58,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2055.7ms TimeCoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2021-05-01 06:46:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2021-05-01 06:47:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1905. [2021-05-01 06:47:00,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1828 states have (on average 1.2226477024070022) internal successors, (2235), 1865 states have internal predecessors, (2235), 56 states have call successors, (56), 21 states have call predecessors, (56), 20 states have return successors, (55), 18 states have call predecessors, (55), 55 states have call successors, (55) [2021-05-01 06:47:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2346 transitions. [2021-05-01 06:47:00,186 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2346 transitions. Word has length 73 [2021-05-01 06:47:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:47:00,186 INFO L480 AbstractCegarLoop]: Abstraction has 1905 states and 2346 transitions. [2021-05-01 06:47:00,186 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) [2021-05-01 06:47:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2346 transitions. [2021-05-01 06:47:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-01 06:47:00,188 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:47:00,188 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] [2021-05-01 06:47:00,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-05-01 06:47:00,188 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:47:00,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:47:00,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1791898001, now seen corresponding path program 21 times [2021-05-01 06:47:00,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:47:00,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824485846] [2021-05-01 06:47:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:47:00,199 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:47:00,200 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:47:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:00,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:00,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:00,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:00,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:00,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:00,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:00,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:00,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:00,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:00,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:00,330 INFO L142 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-05-01 06:47:00,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:47:00,378 INFO L142 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-05-01 06:47:00,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:47:00,422 INFO L142 QuantifierPusher]: treesize reduction 24, result has 4.0 percent of original size [2021-05-01 06:47:00,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:00,425 INFO L142 QuantifierPusher]: treesize reduction 27, result has 10.0 percent of original size [2021-05-01 06:47:00,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:00,434 INFO L142 QuantifierPusher]: treesize reduction 55, result has 27.6 percent of original size [2021-05-01 06:47:00,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:47:00,495 INFO L142 QuantifierPusher]: treesize reduction 55, result has 24.7 percent of original size [2021-05-01 06:47:00,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:47:00,566 INFO L142 QuantifierPusher]: treesize reduction 57, result has 19.7 percent of original size [2021-05-01 06:47:00,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:47:00,611 INFO L142 QuantifierPusher]: treesize reduction 47, result has 6.0 percent of original size [2021-05-01 06:47:00,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:00,619 INFO L142 QuantifierPusher]: treesize reduction 54, result has 33.3 percent of original size [2021-05-01 06:47:00,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:47:00,632 INFO L142 QuantifierPusher]: treesize reduction 47, result has 47.8 percent of original size [2021-05-01 06:47:00,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:47:00,692 INFO L142 QuantifierPusher]: treesize reduction 47, result has 44.7 percent of original size [2021-05-01 06:47:00,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:47:00,788 INFO L142 QuantifierPusher]: treesize reduction 47, result has 42.7 percent of original size [2021-05-01 06:47:00,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:47:00,869 INFO L142 QuantifierPusher]: treesize reduction 44, result has 37.1 percent of original size [2021-05-01 06:47:00,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:47:00,925 INFO L142 QuantifierPusher]: treesize reduction 46, result has 37.0 percent of original size [2021-05-01 06:47:00,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:47:00,978 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.9 percent of original size [2021-05-01 06:47:00,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:47:01,074 INFO L142 QuantifierPusher]: treesize reduction 13, result has 75.0 percent of original size [2021-05-01 06:47:01,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:47:01,144 INFO L142 QuantifierPusher]: treesize reduction 13, result has 74.0 percent of original size [2021-05-01 06:47:01,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:47:01,212 INFO L142 QuantifierPusher]: treesize reduction 9, result has 83.9 percent of original size [2021-05-01 06:47:01,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:47:01,311 INFO L142 QuantifierPusher]: treesize reduction 9, result has 77.5 percent of original size [2021-05-01 06:47:01,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:47:01,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 77.5 percent of original size [2021-05-01 06:47:01,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:47:01,433 INFO L142 QuantifierPusher]: treesize reduction 4, result has 93.4 percent of original size [2021-05-01 06:47:01,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:47:01,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:01,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:47:01,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:01,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:47:01,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:01,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:47:01,773 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-05-01 06:47:01,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:47:01,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:01,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:47:01,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:01,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:02,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:02,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:47:02,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:02,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:47:02,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:02,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:47:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:02,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:02,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:02,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-05-01 06:47:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:02,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:02,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:47:02,300 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:47:02,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824485846] [2021-05-01 06:47:02,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1824485846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:47:02,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:47:02,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-01 06:47:02,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927468152] [2021-05-01 06:47:02,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-01 06:47:02,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:47:02,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-01 06:47:02,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2021-05-01 06:47:02,301 INFO L87 Difference]: Start difference. First operand 1905 states and 2346 transitions. Second operand has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 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) [2021-05-01 06:47:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:47:11,219 INFO L93 Difference]: Finished difference Result 2205 states and 2701 transitions. [2021-05-01 06:47:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-01 06:47:11,224 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), 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 [2021-05-01 06:47:11,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:47:11,227 INFO L225 Difference]: With dead ends: 2205 [2021-05-01 06:47:11,227 INFO L226 Difference]: Without dead ends: 2203 [2021-05-01 06:47:11,228 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 5124.3ms TimeCoverageRelationStatistics Valid=462, Invalid=3320, Unknown=0, NotChecked=0, Total=3782 [2021-05-01 06:47:11,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2021-05-01 06:47:12,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1916. [2021-05-01 06:47:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1834 states have (on average 1.2208287895310797) internal successors, (2239), 1873 states have internal predecessors, (2239), 60 states have call successors, (60), 22 states have call predecessors, (60), 21 states have return successors, (59), 20 states have call predecessors, (59), 59 states have call successors, (59) [2021-05-01 06:47:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2358 transitions. [2021-05-01 06:47:12,684 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2358 transitions. Word has length 71 [2021-05-01 06:47:12,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:47:12,684 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2358 transitions. [2021-05-01 06:47:12,684 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), 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) [2021-05-01 06:47:12,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2358 transitions. [2021-05-01 06:47:12,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-01 06:47:12,686 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:47:12,686 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] [2021-05-01 06:47:12,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-05-01 06:47:12,686 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:47:12,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:47:12,687 INFO L82 PathProgramCache]: Analyzing trace with hash -2027609937, now seen corresponding path program 22 times [2021-05-01 06:47:12,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:47:12,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579537602] [2021-05-01 06:47:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:47:12,693 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:47:12,694 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:47:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:12,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:12,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:12,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:12,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:12,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:12,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:47:12,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:12,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:47:12,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:12,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:47:12,843 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:47:12,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:47:12,893 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 06:47:12,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:47:12,952 INFO L142 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size [2021-05-01 06:47:12,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:12,979 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-05-01 06:47:12,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:12,990 INFO L142 QuantifierPusher]: treesize reduction 60, result has 20.0 percent of original size [2021-05-01 06:47:12,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:47:13,004 INFO L142 QuantifierPusher]: treesize reduction 59, result has 39.8 percent of original size [2021-05-01 06:47:13,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:47:13,092 INFO L142 QuantifierPusher]: treesize reduction 59, result has 39.8 percent of original size [2021-05-01 06:47:13,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:47:13,095 INFO L142 QuantifierPusher]: treesize reduction 60, result has 20.0 percent of original size [2021-05-01 06:47:13,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:47:13,110 INFO L142 QuantifierPusher]: treesize reduction 62, result has 19.5 percent of original size [2021-05-01 06:47:13,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:47:13,130 INFO L142 QuantifierPusher]: treesize reduction 81, result has 44.9 percent of original size [2021-05-01 06:47:13,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:47:13,280 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2021-05-01 06:47:13,282 INFO L142 QuantifierPusher]: treesize reduction 68, result has 25.3 percent of original size [2021-05-01 06:47:13,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:47:13,302 INFO L142 QuantifierPusher]: treesize reduction 67, result has 25.6 percent of original size [2021-05-01 06:47:13,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:47:13,324 INFO L142 QuantifierPusher]: treesize reduction 34, result has 55.8 percent of original size [2021-05-01 06:47:13,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:47:13,436 INFO L142 QuantifierPusher]: treesize reduction 48, result has 56.4 percent of original size [2021-05-01 06:47:13,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:47:13,558 INFO L142 QuantifierPusher]: treesize reduction 33, result has 45.0 percent of original size [2021-05-01 06:47:13,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:47:13,621 INFO L142 QuantifierPusher]: treesize reduction 33, result has 54.8 percent of original size [2021-05-01 06:47:13,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:47:13,711 INFO L142 QuantifierPusher]: treesize reduction 33, result has 53.5 percent of original size [2021-05-01 06:47:13,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:47:13,789 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.8 percent of original size [2021-05-01 06:47:13,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:47:13,861 INFO L142 QuantifierPusher]: treesize reduction 18, result has 63.3 percent of original size [2021-05-01 06:47:13,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:47:13,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:47:13,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:47:14,038 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:47:14,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:47:14,116 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-05-01 06:47:14,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:47:14,195 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:47:14,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:47:14,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:14,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:14,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:14,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:47:14,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:14,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:47:14,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:14,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:14,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:47:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:14,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:14,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:14,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-05-01 06:47:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:14,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:14,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:47:14,514 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:47:14,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579537602] [2021-05-01 06:47:14,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1579537602] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:47:14,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:47:14,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:47:14,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675450156] [2021-05-01 06:47:14,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:47:14,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:47:14,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:47:14,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:47:14,515 INFO L87 Difference]: Start difference. First operand 1916 states and 2358 transitions. Second operand has 26 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 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) [2021-05-01 06:47:16,231 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2021-05-01 06:47:17,481 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2021-05-01 06:47:19,780 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2021-05-01 06:47:20,017 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2021-05-01 06:47:23,335 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2021-05-01 06:47:23,717 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2021-05-01 06:47:26,048 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2021-05-01 06:47:28,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:47:28,726 INFO L93 Difference]: Finished difference Result 2533 states and 3121 transitions. [2021-05-01 06:47:28,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-01 06:47:28,730 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), 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 [2021-05-01 06:47:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:47:28,733 INFO L225 Difference]: With dead ends: 2533 [2021-05-01 06:47:28,734 INFO L226 Difference]: Without dead ends: 2531 [2021-05-01 06:47:28,734 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 7763.4ms TimeCoverageRelationStatistics Valid=701, Invalid=5461, Unknown=0, NotChecked=0, Total=6162 [2021-05-01 06:47:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2021-05-01 06:47:30,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2054. [2021-05-01 06:47:30,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1959 states have (on average 1.218989280245023) internal successors, (2388), 2003 states have internal predecessors, (2388), 71 states have call successors, (71), 24 states have call predecessors, (71), 23 states have return successors, (70), 26 states have call predecessors, (70), 70 states have call successors, (70) [2021-05-01 06:47:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2529 transitions. [2021-05-01 06:47:30,315 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2529 transitions. Word has length 71 [2021-05-01 06:47:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:47:30,315 INFO L480 AbstractCegarLoop]: Abstraction has 2054 states and 2529 transitions. [2021-05-01 06:47:30,315 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), 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) [2021-05-01 06:47:30,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2529 transitions. [2021-05-01 06:47:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-01 06:47:30,317 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:47:30,317 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] [2021-05-01 06:47:30,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-05-01 06:47:30,317 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:47:30,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:47:30,317 INFO L82 PathProgramCache]: Analyzing trace with hash 952313571, now seen corresponding path program 23 times [2021-05-01 06:47:30,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:47:30,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127821864] [2021-05-01 06:47:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:47:30,323 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:47:30,324 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:47:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:30,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:30,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:30,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:30,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:30,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:30,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:30,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:30,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:30,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:30,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:30,447 INFO L142 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-05-01 06:47:30,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:47:30,489 INFO L142 QuantifierPusher]: treesize reduction 24, result has 44.2 percent of original size [2021-05-01 06:47:30,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:47:30,537 INFO L142 QuantifierPusher]: treesize reduction 32, result has 3.0 percent of original size [2021-05-01 06:47:30,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:30,540 INFO L142 QuantifierPusher]: treesize reduction 54, result has 14.3 percent of original size [2021-05-01 06:47:30,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:47:30,549 INFO L142 QuantifierPusher]: treesize reduction 55, result has 27.6 percent of original size [2021-05-01 06:47:30,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:47:30,599 INFO L142 QuantifierPusher]: treesize reduction 43, result has 6.5 percent of original size [2021-05-01 06:47:30,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:30,609 INFO L142 QuantifierPusher]: treesize reduction 74, result has 6.3 percent of original size [2021-05-01 06:47:30,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:47:30,620 INFO L142 QuantifierPusher]: treesize reduction 74, result has 6.3 percent of original size [2021-05-01 06:47:30,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:47:30,635 INFO L142 QuantifierPusher]: treesize reduction 74, result has 6.3 percent of original size [2021-05-01 06:47:30,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:47:30,648 INFO L142 QuantifierPusher]: treesize reduction 77, result has 6.1 percent of original size [2021-05-01 06:47:30,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:47:30,662 INFO L142 QuantifierPusher]: treesize reduction 38, result has 48.6 percent of original size [2021-05-01 06:47:30,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:47:30,710 INFO L142 QuantifierPusher]: treesize reduction 40, result has 45.9 percent of original size [2021-05-01 06:47:30,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:47:30,761 INFO L142 QuantifierPusher]: treesize reduction 40, result has 54.0 percent of original size [2021-05-01 06:47:30,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:47:30,833 INFO L142 QuantifierPusher]: treesize reduction 40, result has 52.9 percent of original size [2021-05-01 06:47:30,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:47:30,897 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-05-01 06:47:30,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:47:30,954 INFO L142 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-05-01 06:47:30,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:47:31,018 INFO L142 QuantifierPusher]: treesize reduction 24, result has 67.6 percent of original size [2021-05-01 06:47:31,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:47:31,122 INFO L142 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-05-01 06:47:31,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:47:31,125 INFO L142 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-05-01 06:47:31,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:47:31,199 INFO L142 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-05-01 06:47:31,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:47:31,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:31,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:47:31,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:31,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:47:31,488 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.0 percent of original size [2021-05-01 06:47:31,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:47:31,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:31,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:47:31,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:31,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:31,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:31,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:47:31,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:31,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:47:31,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:31,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:47:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:32,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:32,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-05-01 06:47:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:32,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:32,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:47:32,059 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:47:32,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127821864] [2021-05-01 06:47:32,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [127821864] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:47:32,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:47:32,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:47:32,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291811664] [2021-05-01 06:47:32,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:47:32,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:47:32,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:47:32,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:47:32,060 INFO L87 Difference]: Start difference. First operand 2054 states and 2529 transitions. Second operand has 26 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 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) [2021-05-01 06:47:33,333 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2021-05-01 06:47:34,114 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 26 [2021-05-01 06:47:34,398 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2021-05-01 06:47:35,239 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2021-05-01 06:47:35,510 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 22 [2021-05-01 06:47:35,831 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2021-05-01 06:47:36,700 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 25 [2021-05-01 06:47:37,104 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2021-05-01 06:47:37,783 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-05-01 06:47:38,159 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2021-05-01 06:47:38,878 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2021-05-01 06:47:40,206 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2021-05-01 06:47:40,434 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-05-01 06:47:40,813 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-05-01 06:47:41,787 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-05-01 06:47:42,012 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-05-01 06:47:42,348 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-05-01 06:47:43,372 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-05-01 06:47:44,445 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-05-01 06:47:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:47:46,678 INFO L93 Difference]: Finished difference Result 2385 states and 2929 transitions. [2021-05-01 06:47:46,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-01 06:47:46,684 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), 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 [2021-05-01 06:47:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:47:46,686 INFO L225 Difference]: With dead ends: 2385 [2021-05-01 06:47:46,687 INFO L226 Difference]: Without dead ends: 2383 [2021-05-01 06:47:46,687 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 8510.1ms TimeCoverageRelationStatistics Valid=597, Invalid=4515, Unknown=0, NotChecked=0, Total=5112 [2021-05-01 06:47:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2021-05-01 06:47:48,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 2076. [2021-05-01 06:47:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 1980 states have (on average 1.2196969696969697) internal successors, (2415), 2024 states have internal predecessors, (2415), 71 states have call successors, (71), 25 states have call predecessors, (71), 24 states have return successors, (70), 26 states have call predecessors, (70), 70 states have call successors, (70) [2021-05-01 06:47:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2556 transitions. [2021-05-01 06:47:48,295 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2556 transitions. Word has length 71 [2021-05-01 06:47:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:47:48,296 INFO L480 AbstractCegarLoop]: Abstraction has 2076 states and 2556 transitions. [2021-05-01 06:47:48,296 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), 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) [2021-05-01 06:47:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2556 transitions. [2021-05-01 06:47:48,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-01 06:47:48,298 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:47:48,298 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] [2021-05-01 06:47:48,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-05-01 06:47:48,298 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:47:48,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:47:48,298 INFO L82 PathProgramCache]: Analyzing trace with hash -945381923, now seen corresponding path program 24 times [2021-05-01 06:47:48,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:47:48,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876007549] [2021-05-01 06:47:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:47:48,307 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:47:48,307 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:47:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:48,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:48,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:48,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:48,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:48,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:48,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:48,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:48,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:48,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:48,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:47:48,472 INFO L142 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-05-01 06:47:48,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:47:48,521 INFO L142 QuantifierPusher]: treesize reduction 24, result has 44.2 percent of original size [2021-05-01 06:47:48,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:47:48,571 INFO L142 QuantifierPusher]: treesize reduction 32, result has 3.0 percent of original size [2021-05-01 06:47:48,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:48,574 INFO L142 QuantifierPusher]: treesize reduction 35, result has 7.9 percent of original size [2021-05-01 06:47:48,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:48,584 INFO L142 QuantifierPusher]: treesize reduction 42, result has 33.3 percent of original size [2021-05-01 06:47:48,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:47:48,660 INFO L142 QuantifierPusher]: treesize reduction 42, result has 30.0 percent of original size [2021-05-01 06:47:48,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:47:48,741 INFO L142 QuantifierPusher]: treesize reduction 44, result has 24.1 percent of original size [2021-05-01 06:47:48,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:47:48,792 INFO L142 QuantifierPusher]: treesize reduction 43, result has 6.5 percent of original size [2021-05-01 06:47:48,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:47:48,801 INFO L142 QuantifierPusher]: treesize reduction 56, result has 18.8 percent of original size [2021-05-01 06:47:48,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:47:48,854 INFO L142 QuantifierPusher]: treesize reduction 55, result has 32.1 percent of original size [2021-05-01 06:47:48,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:47:48,946 INFO L142 QuantifierPusher]: treesize reduction 55, result has 43.9 percent of original size [2021-05-01 06:47:48,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:47:49,082 INFO L142 QuantifierPusher]: treesize reduction 48, result has 56.8 percent of original size [2021-05-01 06:47:49,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:47:49,212 INFO L142 QuantifierPusher]: treesize reduction 48, result has 55.6 percent of original size [2021-05-01 06:47:49,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:47:49,345 INFO L142 QuantifierPusher]: treesize reduction 48, result has 54.3 percent of original size [2021-05-01 06:47:49,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:47:49,466 INFO L142 QuantifierPusher]: treesize reduction 52, result has 35.0 percent of original size [2021-05-01 06:47:49,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:47:49,547 INFO L142 QuantifierPusher]: treesize reduction 55, result has 34.5 percent of original size [2021-05-01 06:47:49,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:47:49,626 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.8 percent of original size [2021-05-01 06:47:49,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:47:49,789 INFO L142 QuantifierPusher]: treesize reduction 24, result has 61.3 percent of original size [2021-05-01 06:47:49,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:47:49,881 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-05-01 06:47:49,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:47:49,988 INFO L142 QuantifierPusher]: treesize reduction 24, result has 68.4 percent of original size [2021-05-01 06:47:49,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:47:50,135 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-05-01 06:47:50,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:47:50,138 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-05-01 06:47:50,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:47:50,230 INFO L142 QuantifierPusher]: treesize reduction 8, result has 88.6 percent of original size [2021-05-01 06:47:50,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:47:50,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:50,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:47:50,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:50,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:47:50,641 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-05-01 06:47:50,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:47:50,777 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-05-01 06:47:50,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:47:50,912 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-05-01 06:47:50,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:47:50,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:50,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:47:51,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:51,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:47:51,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:51,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:47:51,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:51,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:47:51,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:51,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:51,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:47:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:51,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:51,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:51,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-05-01 06:47:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:47:51,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:47:51,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:47:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:47:51,483 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:47:51,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876007549] [2021-05-01 06:47:51,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1876007549] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:47:51,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:47:51,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-01 06:47:51,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012012398] [2021-05-01 06:47:51,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-01 06:47:51,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:47:51,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-01 06:47:51,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 06:47:51,484 INFO L87 Difference]: Start difference. First operand 2076 states and 2556 transitions. Second operand has 34 states, 32 states have (on average 2.03125) internal successors, (65), 32 states have internal predecessors, (65), 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) [2021-05-01 06:47:53,138 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-05-01 06:47:53,820 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2021-05-01 06:47:55,080 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2021-05-01 06:47:56,848 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-05-01 06:47:57,789 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2021-05-01 06:47:58,231 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-05-01 06:47:58,730 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2021-05-01 06:47:59,250 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-05-01 06:48:00,044 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2021-05-01 06:48:00,580 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2021-05-01 06:48:01,819 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-05-01 06:48:02,111 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-05-01 06:48:02,571 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-05-01 06:48:02,962 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-05-01 06:48:03,838 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-05-01 06:48:04,215 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-05-01 06:48:05,407 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-05-01 06:48:05,898 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-05-01 06:48:06,723 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-05-01 06:48:06,951 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-05-01 06:48:07,349 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-05-01 06:48:08,044 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-05-01 06:48:08,292 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-05-01 06:48:09,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:48:09,834 INFO L93 Difference]: Finished difference Result 2341 states and 2867 transitions. [2021-05-01 06:48:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-01 06:48:09,839 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.03125) internal successors, (65), 32 states have internal predecessors, (65), 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 [2021-05-01 06:48:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:48:09,842 INFO L225 Difference]: With dead ends: 2341 [2021-05-01 06:48:09,842 INFO L226 Difference]: Without dead ends: 2339 [2021-05-01 06:48:09,843 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1863 ImplicationChecksByTransitivity, 11854.3ms TimeCoverageRelationStatistics Valid=732, Invalid=6074, Unknown=0, NotChecked=0, Total=6806 [2021-05-01 06:48:09,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2021-05-01 06:48:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2088. [2021-05-01 06:48:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 1990 states have (on average 1.2180904522613065) internal successors, (2424), 2036 states have internal predecessors, (2424), 73 states have call successors, (73), 25 states have call predecessors, (73), 24 states have return successors, (72), 26 states have call predecessors, (72), 72 states have call successors, (72) [2021-05-01 06:48:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2569 transitions. [2021-05-01 06:48:11,589 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2569 transitions. Word has length 71 [2021-05-01 06:48:11,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:48:11,589 INFO L480 AbstractCegarLoop]: Abstraction has 2088 states and 2569 transitions. [2021-05-01 06:48:11,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 32 states have (on average 2.03125) internal successors, (65), 32 states have internal predecessors, (65), 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) [2021-05-01 06:48:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2569 transitions. [2021-05-01 06:48:11,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:48:11,591 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:48:11,592 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] [2021-05-01 06:48:11,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-01 06:48:11,592 INFO L428 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:48:11,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:48:11,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2062115907, now seen corresponding path program 18 times [2021-05-01 06:48:11,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:48:11,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328662813] [2021-05-01 06:48:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:48:11,613 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:48:11,614 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:48:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:48:11,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:11,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:48:11,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:11,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:48:11,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:11,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:48:11,774 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-05-01 06:48:11,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:48:11,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:11,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:48:11,838 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-05-01 06:48:11,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:48:11,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:11,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:48:11,907 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-05-01 06:48:11,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:48:11,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:11,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:48:11,970 INFO L142 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-05-01 06:48:11,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:48:12,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:12,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:48:12,040 INFO L142 QuantifierPusher]: treesize reduction 18, result has 28.0 percent of original size [2021-05-01 06:48:12,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:48:12,055 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-05-01 06:48:12,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:48:12,143 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-05-01 06:48:12,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:48:12,255 INFO L142 QuantifierPusher]: treesize reduction 27, result has 54.2 percent of original size [2021-05-01 06:48:12,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:48:12,378 INFO L142 QuantifierPusher]: treesize reduction 18, result has 62.5 percent of original size [2021-05-01 06:48:12,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:48:12,470 INFO L142 QuantifierPusher]: treesize reduction 18, result has 70.5 percent of original size [2021-05-01 06:48:12,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 06:48:12,526 INFO L142 QuantifierPusher]: treesize reduction 19, result has 71.6 percent of original size [2021-05-01 06:48:12,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:48:12,606 INFO L142 QuantifierPusher]: treesize reduction 46, result has 62.9 percent of original size [2021-05-01 06:48:12,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 06:48:12,730 INFO L142 QuantifierPusher]: treesize reduction 52, result has 65.6 percent of original size [2021-05-01 06:48:12,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-05-01 06:48:12,785 INFO L142 QuantifierPusher]: treesize reduction 49, result has 59.2 percent of original size [2021-05-01 06:48:12,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:48:12,831 INFO L142 QuantifierPusher]: treesize reduction 50, result has 58.7 percent of original size [2021-05-01 06:48:12,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:48:12,930 INFO L142 QuantifierPusher]: treesize reduction 77, result has 67.2 percent of original size [2021-05-01 06:48:12,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-05-01 06:48:13,092 INFO L142 QuantifierPusher]: treesize reduction 74, result has 57.2 percent of original size [2021-05-01 06:48:13,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-05-01 06:48:13,253 INFO L142 QuantifierPusher]: treesize reduction 71, result has 50.0 percent of original size [2021-05-01 06:48:13,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:48:13,259 INFO L142 QuantifierPusher]: treesize reduction 71, result has 50.0 percent of original size [2021-05-01 06:48:13,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:48:13,370 INFO L142 QuantifierPusher]: treesize reduction 71, result has 65.5 percent of original size [2021-05-01 06:48:13,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-05-01 06:48:13,529 INFO L142 QuantifierPusher]: treesize reduction 64, result has 67.8 percent of original size [2021-05-01 06:48:13,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-05-01 06:48:13,684 INFO L142 QuantifierPusher]: treesize reduction 83, result has 40.7 percent of original size [2021-05-01 06:48:13,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:48:13,819 INFO L142 QuantifierPusher]: treesize reduction 29, result has 65.1 percent of original size [2021-05-01 06:48:13,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:48:13,954 INFO L142 QuantifierPusher]: treesize reduction 17, result has 78.8 percent of original size [2021-05-01 06:48:13,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:48:14,140 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-05-01 06:48:14,144 INFO L142 QuantifierPusher]: treesize reduction 17, result has 77.6 percent of original size [2021-05-01 06:48:14,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:48:14,221 INFO L142 QuantifierPusher]: treesize reduction 22, result has 76.8 percent of original size [2021-05-01 06:48:14,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:48:14,409 INFO L142 QuantifierPusher]: treesize reduction 19, result has 81.7 percent of original size [2021-05-01 06:48:14,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-05-01 06:48:14,603 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2021-05-01 06:48:14,607 INFO L142 QuantifierPusher]: treesize reduction 19, result has 81.4 percent of original size [2021-05-01 06:48:14,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:48:14,790 INFO L142 QuantifierPusher]: treesize reduction 14, result has 51.7 percent of original size [2021-05-01 06:48:14,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:48:14,868 INFO L142 QuantifierPusher]: treesize reduction 27, result has 49.1 percent of original size [2021-05-01 06:48:14,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:48:14,997 INFO L142 QuantifierPusher]: treesize reduction 27, result has 51.8 percent of original size [2021-05-01 06:48:14,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:48:15,138 INFO L142 QuantifierPusher]: treesize reduction 27, result has 49.1 percent of original size [2021-05-01 06:48:15,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:48:15,141 INFO L142 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-05-01 06:48:15,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:48:15,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:15,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:48:15,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:15,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:48:15,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:15,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:48:15,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:15,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:48:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:48:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:48:15,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:15,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:48:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-01 06:48:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:48:15,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:15,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:48:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:48:15,671 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:48:15,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328662813] [2021-05-01 06:48:15,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1328662813] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:48:15,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:48:15,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-01 06:48:15,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345495955] [2021-05-01 06:48:15,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-01 06:48:15,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:48:15,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-01 06:48:15,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1051, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 06:48:15,672 INFO L87 Difference]: Start difference. First operand 2088 states and 2569 transitions. Second operand has 35 states, 33 states have (on average 2.0) 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) [2021-05-01 06:48:22,420 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2021-05-01 06:48:30,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:48:30,385 INFO L93 Difference]: Finished difference Result 2346 states and 2876 transitions. [2021-05-01 06:48:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-01 06:48:30,390 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.0) 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 [2021-05-01 06:48:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:48:30,393 INFO L225 Difference]: With dead ends: 2346 [2021-05-01 06:48:30,393 INFO L226 Difference]: Without dead ends: 2344 [2021-05-01 06:48:30,394 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1944 ImplicationChecksByTransitivity, 9289.7ms TimeCoverageRelationStatistics Valid=673, Invalid=5969, Unknown=0, NotChecked=0, Total=6642 [2021-05-01 06:48:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2021-05-01 06:48:32,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2107. [2021-05-01 06:48:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 2008 states have (on average 1.217629482071713) internal successors, (2445), 2054 states have internal predecessors, (2445), 73 states have call successors, (73), 26 states have call predecessors, (73), 25 states have return successors, (72), 26 states have call predecessors, (72), 72 states have call successors, (72) [2021-05-01 06:48:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 2590 transitions. [2021-05-01 06:48:32,210 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 2590 transitions. Word has length 72 [2021-05-01 06:48:32,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:48:32,210 INFO L480 AbstractCegarLoop]: Abstraction has 2107 states and 2590 transitions. [2021-05-01 06:48:32,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 33 states have (on average 2.0) 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) [2021-05-01 06:48:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 2590 transitions. [2021-05-01 06:48:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:48:32,213 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:48:32,213 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] [2021-05-01 06:48:32,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-05-01 06:48:32,213 INFO L428 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:48:32,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:48:32,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1824795895, now seen corresponding path program 19 times [2021-05-01 06:48:32,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:48:32,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703381558] [2021-05-01 06:48:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:48:32,221 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:48:32,222 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:48:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:48:32,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:32,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:48:32,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:32,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:48:32,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:32,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:48:32,357 INFO L142 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size [2021-05-01 06:48:32,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:48:32,427 INFO L142 QuantifierPusher]: treesize reduction 19, result has 57.8 percent of original size [2021-05-01 06:48:32,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:48:32,445 INFO L142 QuantifierPusher]: treesize reduction 21, result has 65.6 percent of original size [2021-05-01 06:48:32,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:48:32,520 INFO L142 QuantifierPusher]: treesize reduction 19, result has 64.2 percent of original size [2021-05-01 06:48:32,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:48:32,542 INFO L142 QuantifierPusher]: treesize reduction 80, result has 34.4 percent of original size [2021-05-01 06:48:32,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:48:32,617 INFO L142 QuantifierPusher]: treesize reduction 78, result has 31.6 percent of original size [2021-05-01 06:48:32,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:48:32,642 INFO L142 QuantifierPusher]: treesize reduction 35, result has 46.2 percent of original size [2021-05-01 06:48:32,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:48:32,718 INFO L142 QuantifierPusher]: treesize reduction 33, result has 42.1 percent of original size [2021-05-01 06:48:32,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:48:32,746 INFO L142 QuantifierPusher]: treesize reduction 44, result has 6.4 percent of original size [2021-05-01 06:48:32,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:48:32,777 INFO L142 QuantifierPusher]: treesize reduction 45, result has 13.5 percent of original size [2021-05-01 06:48:32,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:48:32,793 INFO L142 QuantifierPusher]: treesize reduction 68, result has 32.0 percent of original size [2021-05-01 06:48:32,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:48:32,919 INFO L142 QuantifierPusher]: treesize reduction 63, result has 31.5 percent of original size [2021-05-01 06:48:32,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:48:33,068 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-05-01 06:48:33,072 INFO L142 QuantifierPusher]: treesize reduction 63, result has 28.4 percent of original size [2021-05-01 06:48:33,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:48:33,173 INFO L142 QuantifierPusher]: treesize reduction 64, result has 15.8 percent of original size [2021-05-01 06:48:33,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:48:33,193 INFO L142 QuantifierPusher]: treesize reduction 67, result has 32.3 percent of original size [2021-05-01 06:48:33,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:48:33,217 INFO L142 QuantifierPusher]: treesize reduction 59, result has 40.4 percent of original size [2021-05-01 06:48:33,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:48:33,374 INFO L142 QuantifierPusher]: treesize reduction 135, result has 28.9 percent of original size [2021-05-01 06:48:33,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:48:33,534 INFO L142 QuantifierPusher]: treesize reduction 122, result has 37.4 percent of original size [2021-05-01 06:48:33,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:48:33,712 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 16 [2021-05-01 06:48:33,718 INFO L142 QuantifierPusher]: treesize reduction 123, result has 47.7 percent of original size [2021-05-01 06:48:33,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-05-01 06:48:33,902 INFO L142 QuantifierPusher]: treesize reduction 123, result has 47.4 percent of original size [2021-05-01 06:48:33,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 06:48:34,056 INFO L142 QuantifierPusher]: treesize reduction 77, result has 45.0 percent of original size [2021-05-01 06:48:34,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:48:34,203 INFO L142 QuantifierPusher]: treesize reduction 79, result has 44.4 percent of original size [2021-05-01 06:48:34,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:48:34,357 INFO L142 QuantifierPusher]: treesize reduction 92, result has 59.6 percent of original size [2021-05-01 06:48:34,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-05-01 06:48:34,563 INFO L142 QuantifierPusher]: treesize reduction 84, result has 42.9 percent of original size [2021-05-01 06:48:34,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:48:34,569 INFO L142 QuantifierPusher]: treesize reduction 83, result has 42.8 percent of original size [2021-05-01 06:48:34,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:48:34,713 INFO L142 QuantifierPusher]: treesize reduction 70, result has 62.8 percent of original size [2021-05-01 06:48:34,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-05-01 06:48:34,905 INFO L142 QuantifierPusher]: treesize reduction 94, result has 58.8 percent of original size [2021-05-01 06:48:34,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-05-01 06:48:35,103 INFO L142 QuantifierPusher]: treesize reduction 35, result has 71.8 percent of original size [2021-05-01 06:48:35,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-05-01 06:48:35,246 INFO L142 QuantifierPusher]: treesize reduction 42, result has 55.8 percent of original size [2021-05-01 06:48:35,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:48:35,385 INFO L142 QuantifierPusher]: treesize reduction 40, result has 57.0 percent of original size [2021-05-01 06:48:35,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:48:35,591 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-05-01 06:48:35,595 INFO L142 QuantifierPusher]: treesize reduction 40, result has 55.6 percent of original size [2021-05-01 06:48:35,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:48:35,770 INFO L142 QuantifierPusher]: treesize reduction 12, result has 76.5 percent of original size [2021-05-01 06:48:35,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:48:35,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-05-01 06:48:35,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:48:36,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:48:36,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:48:36,173 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:48:36,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:48:36,304 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-05-01 06:48:36,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:48:36,434 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:48:36,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:48:36,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:36,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:48:36,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:36,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:48:36,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:36,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:48:36,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:36,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:48:37,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:48:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:48:37,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:37,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:48:37,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-01 06:48:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:48:37,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:48:37,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:48:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:48:37,055 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:48:37,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703381558] [2021-05-01 06:48:37,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [703381558] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:48:37,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:48:37,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-01 06:48:37,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405964924] [2021-05-01 06:48:37,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-01 06:48:37,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:48:37,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-01 06:48:37,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2021-05-01 06:48:37,056 INFO L87 Difference]: Start difference. First operand 2107 states and 2590 transitions. Second operand has 36 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 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) [2021-05-01 06:48:38,111 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-05-01 06:48:38,622 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 12 [2021-05-01 06:48:38,958 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-05-01 06:48:39,262 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-05-01 06:48:39,654 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-05-01 06:48:40,040 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-05-01 06:48:40,903 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-05-01 06:48:41,217 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2021-05-01 06:48:42,050 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-01 06:48:42,394 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-05-01 06:48:43,036 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-01 06:48:43,461 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-05-01 06:48:43,888 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-05-01 06:48:44,577 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-05-01 06:48:44,838 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-01 06:48:45,251 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-05-01 06:48:45,603 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2021-05-01 06:48:46,378 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-05-01 06:48:46,731 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-05-01 06:48:47,020 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-05-01 06:48:48,072 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2021-05-01 06:48:48,500 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-05-01 06:48:48,740 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2021-05-01 06:48:49,307 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2021-05-01 06:48:49,604 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2021-05-01 06:48:51,037 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 32 [2021-05-01 06:48:51,411 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-05-01 06:48:51,751 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2021-05-01 06:48:52,141 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2021-05-01 06:48:52,980 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 24 [2021-05-01 06:48:54,379 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-05-01 06:48:54,814 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 26 [2021-05-01 06:48:55,813 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 25 [2021-05-01 06:48:56,720 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2021-05-01 06:48:57,354 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-05-01 06:48:58,109 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2021-05-01 06:48:58,539 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-05-01 06:48:59,953 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-05-01 06:49:00,527 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 32 [2021-05-01 06:49:01,217 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-05-01 06:49:01,580 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-05-01 06:49:02,036 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2021-05-01 06:49:02,238 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2021-05-01 06:49:02,597 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-05-01 06:49:02,923 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-05-01 06:49:03,253 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-05-01 06:49:03,598 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-05-01 06:49:03,903 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-05-01 06:49:05,246 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-05-01 06:49:05,923 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-05-01 06:49:06,862 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-05-01 06:49:07,475 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-05-01 06:49:08,463 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2021-05-01 06:49:09,000 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-05-01 06:49:10,768 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-05-01 06:49:11,018 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-05-01 06:49:11,291 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-05-01 06:49:12,548 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-05-01 06:49:13,083 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-05-01 06:49:14,224 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-05-01 06:49:14,659 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-05-01 06:49:15,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:49:15,743 INFO L93 Difference]: Finished difference Result 2587 states and 3174 transitions. [2021-05-01 06:49:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-01 06:49:15,750 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 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 [2021-05-01 06:49:15,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:49:15,754 INFO L225 Difference]: With dead ends: 2587 [2021-05-01 06:49:15,754 INFO L226 Difference]: Without dead ends: 2585 [2021-05-01 06:49:15,756 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 8 SyntacticMatches, 7 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6126 ImplicationChecksByTransitivity, 25644.8ms TimeCoverageRelationStatistics Valid=1872, Invalid=17034, Unknown=0, NotChecked=0, Total=18906 [2021-05-01 06:49:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2021-05-01 06:49:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2110. [2021-05-01 06:49:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2014 states have (on average 1.2194637537239326) internal successors, (2456), 2057 states have internal predecessors, (2456), 70 states have call successors, (70), 26 states have call predecessors, (70), 25 states have return successors, (69), 26 states have call predecessors, (69), 69 states have call successors, (69) [2021-05-01 06:49:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 2595 transitions. [2021-05-01 06:49:17,566 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 2595 transitions. Word has length 72 [2021-05-01 06:49:17,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:49:17,566 INFO L480 AbstractCegarLoop]: Abstraction has 2110 states and 2595 transitions. [2021-05-01 06:49:17,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 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) [2021-05-01 06:49:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 2595 transitions. [2021-05-01 06:49:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:49:17,568 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:49:17,568 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] [2021-05-01 06:49:17,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-05-01 06:49:17,568 INFO L428 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:49:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:49:17,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1689804415, now seen corresponding path program 20 times [2021-05-01 06:49:17,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:49:17,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166114698] [2021-05-01 06:49:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:49:17,584 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:49:17,585 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:49:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:49:17,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:17,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:49:17,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:17,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:49:17,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:17,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:49:17,696 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-05-01 06:49:17,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:49:17,755 INFO L142 QuantifierPusher]: treesize reduction 13, result has 66.7 percent of original size [2021-05-01 06:49:17,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:49:17,770 INFO L142 QuantifierPusher]: treesize reduction 15, result has 61.5 percent of original size [2021-05-01 06:49:17,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:49:17,829 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-05-01 06:49:17,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:49:17,846 INFO L142 QuantifierPusher]: treesize reduction 21, result has 38.2 percent of original size [2021-05-01 06:49:17,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:49:17,892 INFO L142 QuantifierPusher]: treesize reduction 19, result has 26.9 percent of original size [2021-05-01 06:49:17,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:49:17,896 INFO L142 QuantifierPusher]: treesize reduction 21, result has 32.3 percent of original size [2021-05-01 06:49:17,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:49:17,932 INFO L142 QuantifierPusher]: treesize reduction 20, result has 13.0 percent of original size [2021-05-01 06:49:17,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:49:17,960 INFO L142 QuantifierPusher]: treesize reduction 21, result has 25.0 percent of original size [2021-05-01 06:49:17,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:49:17,974 INFO L142 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-05-01 06:49:17,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:49:18,033 INFO L142 QuantifierPusher]: treesize reduction 22, result has 31.3 percent of original size [2021-05-01 06:49:18,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:49:18,091 INFO L142 QuantifierPusher]: treesize reduction 21, result has 25.0 percent of original size [2021-05-01 06:49:18,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:49:18,105 INFO L142 QuantifierPusher]: treesize reduction 21, result has 25.0 percent of original size [2021-05-01 06:49:18,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:49:18,119 INFO L142 QuantifierPusher]: treesize reduction 31, result has 42.6 percent of original size [2021-05-01 06:49:18,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:49:18,137 INFO L142 QuantifierPusher]: treesize reduction 28, result has 52.5 percent of original size [2021-05-01 06:49:18,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:49:18,218 INFO L142 QuantifierPusher]: treesize reduction 77, result has 41.7 percent of original size [2021-05-01 06:49:18,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:49:18,378 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 17 [2021-05-01 06:49:18,383 INFO L142 QuantifierPusher]: treesize reduction 71, result has 50.7 percent of original size [2021-05-01 06:49:18,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:49:18,575 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 16 [2021-05-01 06:49:18,581 INFO L142 QuantifierPusher]: treesize reduction 73, result has 60.5 percent of original size [2021-05-01 06:49:18,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-05-01 06:49:18,857 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 24 [2021-05-01 06:49:18,862 INFO L142 QuantifierPusher]: treesize reduction 71, result has 61.0 percent of original size [2021-05-01 06:49:18,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 06:49:19,085 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 22 [2021-05-01 06:49:19,089 INFO L142 QuantifierPusher]: treesize reduction 41, result has 40.6 percent of original size [2021-05-01 06:49:19,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:49:19,190 INFO L142 QuantifierPusher]: treesize reduction 43, result has 39.4 percent of original size [2021-05-01 06:49:19,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:49:19,294 INFO L142 QuantifierPusher]: treesize reduction 42, result has 63.8 percent of original size [2021-05-01 06:49:19,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 06:49:19,541 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-05-01 06:49:19,545 INFO L142 QuantifierPusher]: treesize reduction 32, result has 63.6 percent of original size [2021-05-01 06:49:19,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:49:19,794 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-05-01 06:49:19,799 INFO L142 QuantifierPusher]: treesize reduction 35, result has 62.0 percent of original size [2021-05-01 06:49:19,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:49:20,001 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-05-01 06:49:20,006 INFO L142 QuantifierPusher]: treesize reduction 24, result has 71.8 percent of original size [2021-05-01 06:49:20,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:49:20,304 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-05-01 06:49:20,308 INFO L142 QuantifierPusher]: treesize reduction 24, result has 70.7 percent of original size [2021-05-01 06:49:20,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 06:49:20,579 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-05-01 06:49:20,584 INFO L142 QuantifierPusher]: treesize reduction 21, result has 66.7 percent of original size [2021-05-01 06:49:20,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 06:49:20,752 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.0 percent of original size [2021-05-01 06:49:20,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:49:20,947 INFO L142 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size [2021-05-01 06:49:20,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:49:21,085 INFO L142 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-05-01 06:49:21,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:49:21,215 INFO L142 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-05-01 06:49:21,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:49:21,363 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.4 percent of original size [2021-05-01 06:49:21,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:49:21,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-05-01 06:49:21,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:49:21,697 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:49:21,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:49:21,832 INFO L142 QuantifierPusher]: treesize reduction 24, result has 54.7 percent of original size [2021-05-01 06:49:21,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:49:22,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:49:22,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:49:22,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:22,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:49:22,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:22,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:49:22,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:22,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:49:22,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:22,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:49:22,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:49:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:49:22,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:22,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:49:22,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-01 06:49:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:49:22,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:22,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:49:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:49:22,775 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:49:22,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166114698] [2021-05-01 06:49:22,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1166114698] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:49:22,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:49:22,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-01 06:49:22,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760867920] [2021-05-01 06:49:22,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-01 06:49:22,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:49:22,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-01 06:49:22,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1113, Unknown=0, NotChecked=0, Total=1260 [2021-05-01 06:49:22,776 INFO L87 Difference]: Start difference. First operand 2110 states and 2595 transitions. Second operand has 36 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 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) [2021-05-01 06:49:23,814 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 16 [2021-05-01 06:49:24,119 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 17 [2021-05-01 06:49:24,826 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 18 [2021-05-01 06:49:25,146 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 14 [2021-05-01 06:49:25,574 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 13 [2021-05-01 06:49:26,110 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 12 [2021-05-01 06:49:26,581 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2021-05-01 06:49:27,004 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2021-05-01 06:49:27,312 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-05-01 06:49:28,279 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2021-05-01 06:49:28,718 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-05-01 06:49:29,306 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 22 [2021-05-01 06:49:29,727 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-05-01 06:49:30,133 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-05-01 06:49:30,853 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-01 06:49:31,172 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-05-01 06:49:32,242 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-05-01 06:49:33,049 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-05-01 06:49:33,790 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2021-05-01 06:49:34,347 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-05-01 06:49:35,386 WARN L205 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2021-05-01 06:49:36,308 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2021-05-01 06:49:37,516 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2021-05-01 06:49:38,008 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2021-05-01 06:49:38,773 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-05-01 06:49:39,572 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2021-05-01 06:49:40,062 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 24 [2021-05-01 06:49:41,096 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-05-01 06:49:42,243 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2021-05-01 06:49:42,627 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-05-01 06:49:43,836 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-05-01 06:49:45,406 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-05-01 06:49:45,731 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2021-05-01 06:49:47,197 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-05-01 06:49:47,655 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-05-01 06:49:48,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:49:48,130 INFO L93 Difference]: Finished difference Result 2425 states and 2980 transitions. [2021-05-01 06:49:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-01 06:49:48,140 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 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 [2021-05-01 06:49:48,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:49:48,144 INFO L225 Difference]: With dead ends: 2425 [2021-05-01 06:49:48,144 INFO L226 Difference]: Without dead ends: 2423 [2021-05-01 06:49:48,145 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1658 ImplicationChecksByTransitivity, 18110.9ms TimeCoverageRelationStatistics Valid=793, Invalid=5687, Unknown=0, NotChecked=0, Total=6480 [2021-05-01 06:49:48,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2021-05-01 06:49:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2170. [2021-05-01 06:49:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 2069 states have (on average 1.2194296761720638) internal successors, (2523), 2114 states have internal predecessors, (2523), 74 states have call successors, (74), 27 states have call predecessors, (74), 26 states have return successors, (73), 28 states have call predecessors, (73), 73 states have call successors, (73) [2021-05-01 06:49:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 2670 transitions. [2021-05-01 06:49:50,088 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 2670 transitions. Word has length 72 [2021-05-01 06:49:50,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:49:50,088 INFO L480 AbstractCegarLoop]: Abstraction has 2170 states and 2670 transitions. [2021-05-01 06:49:50,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 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) [2021-05-01 06:49:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 2670 transitions. [2021-05-01 06:49:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:49:50,091 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:49:50,091 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] [2021-05-01 06:49:50,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-05-01 06:49:50,091 INFO L428 AbstractCegarLoop]: === Iteration 117 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:49:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:49:50,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2091436369, now seen corresponding path program 21 times [2021-05-01 06:49:50,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:49:50,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075337886] [2021-05-01 06:49:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:49:50,117 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:49:50,118 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:49:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:49:50,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:50,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:49:50,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:50,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:49:50,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:50,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:49:50,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:50,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:49:50,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:50,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:49:50,371 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-05-01 06:49:50,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:49:50,391 INFO L142 QuantifierPusher]: treesize reduction 18, result has 53.8 percent of original size [2021-05-01 06:49:50,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:49:50,477 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-05-01 06:49:50,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 06:49:50,512 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-05-01 06:49:50,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:49:50,676 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-05-01 06:49:50,680 INFO L142 QuantifierPusher]: treesize reduction 39, result has 50.6 percent of original size [2021-05-01 06:49:50,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:49:50,832 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-05-01 06:49:50,837 INFO L142 QuantifierPusher]: treesize reduction 53, result has 47.5 percent of original size [2021-05-01 06:49:50,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:49:51,060 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-05-01 06:49:51,065 INFO L142 QuantifierPusher]: treesize reduction 53, result has 45.9 percent of original size [2021-05-01 06:49:51,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:49:51,234 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-05-01 06:49:51,237 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-05-01 06:49:51,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:49:51,353 INFO L142 QuantifierPusher]: treesize reduction 30, result has 63.9 percent of original size [2021-05-01 06:49:51,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:49:51,493 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 23 [2021-05-01 06:49:51,498 INFO L142 QuantifierPusher]: treesize reduction 24, result has 74.5 percent of original size [2021-05-01 06:49:51,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:49:51,686 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-05-01 06:49:51,691 INFO L142 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-05-01 06:49:51,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:49:51,737 INFO L142 QuantifierPusher]: treesize reduction 21, result has 70.4 percent of original size [2021-05-01 06:49:51,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:49:51,902 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2021-05-01 06:49:51,907 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.9 percent of original size [2021-05-01 06:49:51,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:49:52,120 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2021-05-01 06:49:52,125 INFO L142 QuantifierPusher]: treesize reduction 21, result has 70.4 percent of original size [2021-05-01 06:49:52,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:49:52,129 INFO L142 QuantifierPusher]: treesize reduction 21, result has 70.4 percent of original size [2021-05-01 06:49:52,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:49:52,295 INFO L142 QuantifierPusher]: treesize reduction 21, result has 79.6 percent of original size [2021-05-01 06:49:52,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:49:52,493 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2021-05-01 06:49:52,496 INFO L142 QuantifierPusher]: treesize reduction 20, result has 80.4 percent of original size [2021-05-01 06:49:52,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:49:52,697 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2021-05-01 06:49:52,700 INFO L142 QuantifierPusher]: treesize reduction 30, result has 63.4 percent of original size [2021-05-01 06:49:52,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:49:52,901 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2021-05-01 06:49:52,905 INFO L142 QuantifierPusher]: treesize reduction 30, result has 63.4 percent of original size [2021-05-01 06:49:52,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:49:52,910 INFO L142 QuantifierPusher]: treesize reduction 31, result has 69.6 percent of original size [2021-05-01 06:49:52,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 06:49:53,094 INFO L142 QuantifierPusher]: treesize reduction 40, result has 66.7 percent of original size [2021-05-01 06:49:53,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 06:49:53,278 INFO L142 QuantifierPusher]: treesize reduction 40, result has 65.8 percent of original size [2021-05-01 06:49:53,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:49:53,436 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-05-01 06:49:53,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:49:53,561 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-05-01 06:49:53,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:49:53,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-05-01 06:49:53,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:49:53,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 06:49:53,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:49:53,935 INFO L142 QuantifierPusher]: treesize reduction 24, result has 56.4 percent of original size [2021-05-01 06:49:53,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:49:54,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-05-01 06:49:54,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:49:54,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:54,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:49:54,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:54,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:49:54,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:54,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:49:54,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:54,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:49:54,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:49:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:49:54,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:54,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:49:54,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-01 06:49:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:49:54,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:49:54,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:49:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:49:54,757 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:49:54,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075337886] [2021-05-01 06:49:54,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1075337886] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:49:54,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:49:54,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-01 06:49:54,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081749325] [2021-05-01 06:49:54,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-01 06:49:54,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:49:54,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-01 06:49:54,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=889, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 06:49:54,759 INFO L87 Difference]: Start difference. First operand 2170 states and 2670 transitions. Second operand has 33 states, 32 states have (on average 2.0) internal successors, (64), 31 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) [2021-05-01 06:49:55,545 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 21 [2021-05-01 06:49:55,927 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 12 [2021-05-01 06:49:56,426 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2021-05-01 06:49:56,753 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-05-01 06:49:57,194 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-05-01 06:49:57,907 WARN L205 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-05-01 06:49:58,520 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-05-01 06:49:58,876 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-05-01 06:49:59,178 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 26 [2021-05-01 06:49:59,742 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2021-05-01 06:50:00,287 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-05-01 06:50:00,831 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-05-01 06:50:01,148 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-05-01 06:50:01,474 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-05-01 06:50:01,956 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-05-01 06:50:02,377 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-05-01 06:50:02,861 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-05-01 06:50:03,514 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-05-01 06:50:03,834 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-05-01 06:50:04,471 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-05-01 06:50:04,961 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-05-01 06:50:05,211 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-05-01 06:50:06,010 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-05-01 06:50:06,457 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2021-05-01 06:50:06,797 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2021-05-01 06:50:07,163 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-05-01 06:50:08,057 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-05-01 06:50:08,631 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-05-01 06:50:08,970 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-05-01 06:50:09,497 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-05-01 06:50:09,825 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-05-01 06:50:10,387 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-05-01 06:50:10,902 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-05-01 06:50:11,232 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-05-01 06:50:12,916 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-05-01 06:50:15,109 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-05-01 06:50:17,735 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-05-01 06:50:18,184 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2021-05-01 06:50:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:50:18,760 INFO L93 Difference]: Finished difference Result 2387 states and 2926 transitions. [2021-05-01 06:50:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-01 06:50:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.0) internal successors, (64), 31 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 [2021-05-01 06:50:18,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:50:18,771 INFO L225 Difference]: With dead ends: 2387 [2021-05-01 06:50:18,771 INFO L226 Difference]: Without dead ends: 2385 [2021-05-01 06:50:18,772 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1967 ImplicationChecksByTransitivity, 17761.9ms TimeCoverageRelationStatistics Valid=1049, Invalid=5271, Unknown=0, NotChecked=0, Total=6320 [2021-05-01 06:50:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2021-05-01 06:50:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2223. [2021-05-01 06:50:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 2119 states have (on average 1.2189712128362435) internal successors, (2583), 2165 states have internal predecessors, (2583), 76 states have call successors, (76), 28 states have call predecessors, (76), 27 states have return successors, (75), 29 states have call predecessors, (75), 75 states have call successors, (75) [2021-05-01 06:50:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 2734 transitions. [2021-05-01 06:50:20,698 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 2734 transitions. Word has length 72 [2021-05-01 06:50:20,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:50:20,699 INFO L480 AbstractCegarLoop]: Abstraction has 2223 states and 2734 transitions. [2021-05-01 06:50:20,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 2.0) internal successors, (64), 31 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) [2021-05-01 06:50:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 2734 transitions. [2021-05-01 06:50:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:50:20,701 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:50:20,701 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] [2021-05-01 06:50:20,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-05-01 06:50:20,701 INFO L428 AbstractCegarLoop]: === Iteration 118 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:50:20,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:50:20,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1311069383, now seen corresponding path program 22 times [2021-05-01 06:50:20,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:50:20,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222804656] [2021-05-01 06:50:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:50:20,711 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:50:20,712 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:50:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:50:20,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:20,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:50:20,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:20,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:50:20,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:20,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:50:20,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:20,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:50:20,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:20,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:50:20,900 INFO L142 QuantifierPusher]: treesize reduction 22, result has 35.3 percent of original size [2021-05-01 06:50:20,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:50:20,914 INFO L142 QuantifierPusher]: treesize reduction 27, result has 51.8 percent of original size [2021-05-01 06:50:20,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 06:50:20,987 INFO L142 QuantifierPusher]: treesize reduction 27, result has 56.5 percent of original size [2021-05-01 06:50:20,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 06:50:21,015 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-05-01 06:50:21,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:50:21,171 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-05-01 06:50:21,175 INFO L142 QuantifierPusher]: treesize reduction 39, result has 50.6 percent of original size [2021-05-01 06:50:21,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:50:21,316 INFO L142 QuantifierPusher]: treesize reduction 51, result has 48.5 percent of original size [2021-05-01 06:50:21,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:50:21,510 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-05-01 06:50:21,513 INFO L142 QuantifierPusher]: treesize reduction 53, result has 45.9 percent of original size [2021-05-01 06:50:21,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 06:50:21,662 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-05-01 06:50:21,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:50:21,800 INFO L142 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-05-01 06:50:21,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:50:21,942 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2021-05-01 06:50:21,947 INFO L142 QuantifierPusher]: treesize reduction 20, result has 76.7 percent of original size [2021-05-01 06:50:21,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:50:22,124 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2021-05-01 06:50:22,128 INFO L142 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-05-01 06:50:22,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:50:22,133 INFO L142 QuantifierPusher]: treesize reduction 21, result has 70.4 percent of original size [2021-05-01 06:50:22,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:50:22,280 INFO L142 QuantifierPusher]: treesize reduction 34, result has 75.2 percent of original size [2021-05-01 06:50:22,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-05-01 06:50:22,584 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2021-05-01 06:50:22,589 INFO L142 QuantifierPusher]: treesize reduction 37, result has 66.1 percent of original size [2021-05-01 06:50:22,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:50:22,853 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2021-05-01 06:50:22,857 INFO L142 QuantifierPusher]: treesize reduction 37, result has 66.1 percent of original size [2021-05-01 06:50:22,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:50:22,862 INFO L142 QuantifierPusher]: treesize reduction 41, result has 68.2 percent of original size [2021-05-01 06:50:22,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 06:50:23,083 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2021-05-01 06:50:23,089 INFO L142 QuantifierPusher]: treesize reduction 50, result has 66.0 percent of original size [2021-05-01 06:50:23,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 06:50:23,298 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 30 [2021-05-01 06:50:23,303 INFO L142 QuantifierPusher]: treesize reduction 50, result has 65.3 percent of original size [2021-05-01 06:50:23,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 06:50:23,470 INFO L142 QuantifierPusher]: treesize reduction 19, result has 73.2 percent of original size [2021-05-01 06:50:23,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 06:50:23,629 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.5 percent of original size [2021-05-01 06:50:23,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 06:50:23,828 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-05-01 06:50:23,832 INFO L142 QuantifierPusher]: treesize reduction 20, result has 70.6 percent of original size [2021-05-01 06:50:23,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:50:24,000 INFO L142 QuantifierPusher]: treesize reduction 20, result has 61.5 percent of original size [2021-05-01 06:50:24,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:50:24,140 INFO L142 QuantifierPusher]: treesize reduction 20, result has 61.5 percent of original size [2021-05-01 06:50:24,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:50:24,251 INFO L142 QuantifierPusher]: treesize reduction 14, result has 82.1 percent of original size [2021-05-01 06:50:24,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 06:50:24,409 INFO L142 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-05-01 06:50:24,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:50:24,525 INFO L142 QuantifierPusher]: treesize reduction 13, result has 72.3 percent of original size [2021-05-01 06:50:24,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:50:24,644 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:50:24,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:50:24,776 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-05-01 06:50:24,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:50:24,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-05-01 06:50:24,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:50:25,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:25,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:50:25,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:25,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:50:25,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:25,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:50:25,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:25,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:50:25,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:50:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:50:25,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:25,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:50:25,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-01 06:50:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:50:25,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:25,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:50:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:50:25,617 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:50:25,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222804656] [2021-05-01 06:50:25,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [222804656] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:50:25,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:50:25,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-01 06:50:25,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507525439] [2021-05-01 06:50:25,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-01 06:50:25,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:50:25,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-01 06:50:25,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 06:50:25,619 INFO L87 Difference]: Start difference. First operand 2223 states and 2734 transitions. Second operand has 35 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 33 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) [2021-05-01 06:50:27,286 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-05-01 06:50:27,588 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 11 [2021-05-01 06:50:28,854 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2021-05-01 06:50:29,518 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2021-05-01 06:50:30,153 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-05-01 06:50:31,155 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 14 [2021-05-01 06:50:31,643 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-05-01 06:50:32,180 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2021-05-01 06:50:32,641 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2021-05-01 06:50:33,059 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-05-01 06:50:33,562 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-01 06:50:33,803 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-05-01 06:50:34,519 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-05-01 06:50:35,065 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 06:50:36,463 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2021-05-01 06:50:36,840 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-05-01 06:50:37,702 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2021-05-01 06:50:44,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:50:44,087 INFO L93 Difference]: Finished difference Result 2376 states and 2916 transitions. [2021-05-01 06:50:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-01 06:50:44,095 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 33 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 [2021-05-01 06:50:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:50:44,098 INFO L225 Difference]: With dead ends: 2376 [2021-05-01 06:50:44,098 INFO L226 Difference]: Without dead ends: 2374 [2021-05-01 06:50:44,099 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 11468.8ms TimeCoverageRelationStatistics Valid=474, Invalid=3816, Unknown=0, NotChecked=0, Total=4290 [2021-05-01 06:50:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-05-01 06:50:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2258. [2021-05-01 06:50:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2258 states, 2150 states have (on average 1.218139534883721) internal successors, (2619), 2198 states have internal predecessors, (2619), 79 states have call successors, (79), 29 states have call predecessors, (79), 28 states have return successors, (78), 30 states have call predecessors, (78), 78 states have call successors, (78) [2021-05-01 06:50:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 2776 transitions. [2021-05-01 06:50:46,027 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 2776 transitions. Word has length 72 [2021-05-01 06:50:46,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:50:46,028 INFO L480 AbstractCegarLoop]: Abstraction has 2258 states and 2776 transitions. [2021-05-01 06:50:46,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 33 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) [2021-05-01 06:50:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 2776 transitions. [2021-05-01 06:50:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-01 06:50:46,030 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:50:46,030 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:50:46,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-05-01 06:50:46,030 INFO L428 AbstractCegarLoop]: === Iteration 119 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:50:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:50:46,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1383260442, now seen corresponding path program 32 times [2021-05-01 06:50:46,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:50:46,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867946321] [2021-05-01 06:50:46,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:50:46,041 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:50:46,042 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:50:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:50:46,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:46,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:50:46,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:46,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:50:46,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:46,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:50:46,161 INFO L142 QuantifierPusher]: treesize reduction 28, result has 59.4 percent of original size [2021-05-01 06:50:46,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:50:46,251 INFO L142 QuantifierPusher]: treesize reduction 28, result has 54.1 percent of original size [2021-05-01 06:50:46,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:50:46,273 INFO L142 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size [2021-05-01 06:50:46,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:50:46,369 INFO L142 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size [2021-05-01 06:50:46,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 06:50:46,374 INFO L142 QuantifierPusher]: treesize reduction 24, result has 63.1 percent of original size [2021-05-01 06:50:46,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:50:46,471 INFO L142 QuantifierPusher]: treesize reduction 24, result has 57.9 percent of original size [2021-05-01 06:50:46,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:50:46,499 INFO L142 QuantifierPusher]: treesize reduction 24, result has 63.1 percent of original size [2021-05-01 06:50:46,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:50:46,594 INFO L142 QuantifierPusher]: treesize reduction 24, result has 57.9 percent of original size [2021-05-01 06:50:46,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:50:46,629 INFO L142 QuantifierPusher]: treesize reduction 24, result has 63.1 percent of original size [2021-05-01 06:50:46,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:50:46,732 INFO L142 QuantifierPusher]: treesize reduction 24, result has 57.9 percent of original size [2021-05-01 06:50:46,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:50:46,773 INFO L142 QuantifierPusher]: treesize reduction 28, result has 57.6 percent of original size [2021-05-01 06:50:46,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:50:46,916 INFO L142 QuantifierPusher]: treesize reduction 28, result has 57.6 percent of original size [2021-05-01 06:50:46,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:50:46,921 INFO L142 QuantifierPusher]: treesize reduction 38, result has 32.1 percent of original size [2021-05-01 06:50:46,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:50:46,986 INFO L142 QuantifierPusher]: treesize reduction 67, result has 28.0 percent of original size [2021-05-01 06:50:46,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:50:47,007 INFO L142 QuantifierPusher]: treesize reduction 98, result has 35.1 percent of original size [2021-05-01 06:50:47,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:50:47,115 INFO L142 QuantifierPusher]: treesize reduction 91, result has 44.2 percent of original size [2021-05-01 06:50:47,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 06:50:47,169 INFO L142 QuantifierPusher]: treesize reduction 91, result has 47.4 percent of original size [2021-05-01 06:50:47,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 06:50:47,372 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 23 [2021-05-01 06:50:47,378 INFO L142 QuantifierPusher]: treesize reduction 91, result has 46.5 percent of original size [2021-05-01 06:50:47,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 06:50:47,541 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 21 [2021-05-01 06:50:47,546 INFO L142 QuantifierPusher]: treesize reduction 55, result has 46.6 percent of original size [2021-05-01 06:50:47,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:50:47,728 INFO L142 QuantifierPusher]: treesize reduction 17, result has 79.8 percent of original size [2021-05-01 06:50:47,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:50:47,906 INFO L142 QuantifierPusher]: treesize reduction 13, result has 84.1 percent of original size [2021-05-01 06:50:47,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:50:48,096 INFO L142 QuantifierPusher]: treesize reduction 13, result has 80.3 percent of original size [2021-05-01 06:50:48,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:50:48,176 INFO L142 QuantifierPusher]: treesize reduction 13, result has 80.3 percent of original size [2021-05-01 06:50:48,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:50:48,343 INFO L142 QuantifierPusher]: treesize reduction 13, result has 84.1 percent of original size [2021-05-01 06:50:48,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:50:48,545 INFO L142 QuantifierPusher]: treesize reduction 13, result has 80.3 percent of original size [2021-05-01 06:50:48,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:50:48,550 INFO L142 QuantifierPusher]: treesize reduction 13, result has 80.3 percent of original size [2021-05-01 06:50:48,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:50:48,736 INFO L142 QuantifierPusher]: treesize reduction 17, result has 83.0 percent of original size [2021-05-01 06:50:48,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 06:50:48,956 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 19 [2021-05-01 06:50:48,959 INFO L142 QuantifierPusher]: treesize reduction 17, result has 79.8 percent of original size [2021-05-01 06:50:48,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 06:50:49,074 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.6 percent of original size [2021-05-01 06:50:49,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 06:50:49,259 INFO L142 QuantifierPusher]: treesize reduction 25, result has 75.2 percent of original size [2021-05-01 06:50:49,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 06:50:49,518 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-05-01 06:50:49,522 INFO L142 QuantifierPusher]: treesize reduction 25, result has 70.6 percent of original size [2021-05-01 06:50:49,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 06:50:49,727 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-05-01 06:50:49,732 INFO L142 QuantifierPusher]: treesize reduction 26, result has 69.4 percent of original size [2021-05-01 06:50:49,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:50:49,990 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-05-01 06:50:49,995 INFO L142 QuantifierPusher]: treesize reduction 20, result has 79.4 percent of original size [2021-05-01 06:50:49,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 06:50:50,305 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2021-05-01 06:50:50,309 INFO L142 QuantifierPusher]: treesize reduction 14, result has 81.8 percent of original size [2021-05-01 06:50:50,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:50:50,548 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:50:50,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:50:50,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:50:50,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:50:50,899 INFO L142 QuantifierPusher]: treesize reduction 51, result has 41.4 percent of original size [2021-05-01 06:50:50,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:50:51,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:51,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:50:51,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:51,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:50:51,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:51,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:50:51,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:51,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:50:51,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:50:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:50:51,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:50:51,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:50:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:50:51,581 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:50:51,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867946321] [2021-05-01 06:50:51,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1867946321] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:50:51,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:50:51,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-01 06:50:51,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314763445] [2021-05-01 06:50:51,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-01 06:50:51,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:50:51,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-01 06:50:51,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 06:50:51,583 INFO L87 Difference]: Start difference. First operand 2258 states and 2776 transitions. Second operand has 33 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 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) [2021-05-01 06:50:55,902 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-01 06:50:57,446 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-05-01 06:50:58,065 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-05-01 06:50:58,634 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2021-05-01 06:50:58,961 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-05-01 06:50:59,853 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-01 06:51:00,417 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-05-01 06:51:00,642 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-05-01 06:51:01,638 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2021-05-01 06:51:02,111 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-05-01 06:51:02,474 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2021-05-01 06:51:03,395 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2021-05-01 06:51:04,289 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-05-01 06:51:04,674 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-05-01 06:51:05,691 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2021-05-01 06:51:06,374 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2021-05-01 06:51:06,685 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-05-01 06:51:08,040 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2021-05-01 06:51:08,593 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-05-01 06:51:08,986 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2021-05-01 06:51:09,975 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-05-01 06:51:10,783 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-05-01 06:51:11,145 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-05-01 06:51:12,225 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-05-01 06:51:13,001 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-05-01 06:51:13,357 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2021-05-01 06:51:14,135 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-05-01 06:51:14,597 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-05-01 06:51:18,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:51:18,078 INFO L93 Difference]: Finished difference Result 3004 states and 3704 transitions. [2021-05-01 06:51:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-01 06:51:18,087 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 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 71 [2021-05-01 06:51:18,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:51:18,092 INFO L225 Difference]: With dead ends: 3004 [2021-05-01 06:51:18,092 INFO L226 Difference]: Without dead ends: 3002 [2021-05-01 06:51:18,093 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 7 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 14775.9ms TimeCoverageRelationStatistics Valid=866, Invalid=3964, Unknown=0, NotChecked=0, Total=4830 [2021-05-01 06:51:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-05-01 06:51:20,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2302. [2021-05-01 06:51:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2189 states have (on average 1.2169940612151668) internal successors, (2664), 2240 states have internal predecessors, (2664), 82 states have call successors, (82), 31 states have call predecessors, (82), 30 states have return successors, (81), 30 states have call predecessors, (81), 81 states have call successors, (81) [2021-05-01 06:51:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 2827 transitions. [2021-05-01 06:51:20,017 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 2827 transitions. Word has length 71 [2021-05-01 06:51:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:51:20,017 INFO L480 AbstractCegarLoop]: Abstraction has 2302 states and 2827 transitions. [2021-05-01 06:51:20,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 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) [2021-05-01 06:51:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 2827 transitions. [2021-05-01 06:51:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-01 06:51:20,020 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:51:20,020 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] [2021-05-01 06:51:20,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-05-01 06:51:20,020 INFO L428 AbstractCegarLoop]: === Iteration 120 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:51:20,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:51:20,020 INFO L82 PathProgramCache]: Analyzing trace with hash 218298293, now seen corresponding path program 25 times [2021-05-01 06:51:20,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:51:20,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499445027] [2021-05-01 06:51:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:51:20,045 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:51:20,046 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:51:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:51:20,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:20,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:51:20,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:20,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:51:20,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:20,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:51:20,176 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 06:51:20,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:51:20,244 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-05-01 06:51:20,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:51:20,290 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 06:51:20,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:51:20,392 INFO L142 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size [2021-05-01 06:51:20,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:51:20,439 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-05-01 06:51:20,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:51:20,460 INFO L142 QuantifierPusher]: treesize reduction 53, result has 29.3 percent of original size [2021-05-01 06:51:20,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:51:20,628 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2021-05-01 06:51:20,632 INFO L142 QuantifierPusher]: treesize reduction 53, result has 26.4 percent of original size [2021-05-01 06:51:20,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:51:20,771 INFO L142 QuantifierPusher]: treesize reduction 55, result has 21.4 percent of original size [2021-05-01 06:51:20,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:51:20,867 INFO L142 QuantifierPusher]: treesize reduction 31, result has 18.4 percent of original size [2021-05-01 06:51:20,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:51:20,885 INFO L142 QuantifierPusher]: treesize reduction 65, result has 20.7 percent of original size [2021-05-01 06:51:20,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:51:21,007 INFO L142 QuantifierPusher]: treesize reduction 56, result has 51.3 percent of original size [2021-05-01 06:51:21,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:51:21,174 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 16 [2021-05-01 06:51:21,178 INFO L142 QuantifierPusher]: treesize reduction 61, result has 47.0 percent of original size [2021-05-01 06:51:21,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:51:21,447 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2021-05-01 06:51:21,453 INFO L142 QuantifierPusher]: treesize reduction 56, result has 47.7 percent of original size [2021-05-01 06:51:21,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 06:51:21,664 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2021-05-01 06:51:21,669 INFO L142 QuantifierPusher]: treesize reduction 52, result has 41.6 percent of original size [2021-05-01 06:51:21,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:51:21,880 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 06:51:21,884 INFO L142 QuantifierPusher]: treesize reduction 55, result has 40.9 percent of original size [2021-05-01 06:51:21,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:51:22,101 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2021-05-01 06:51:22,106 INFO L142 QuantifierPusher]: treesize reduction 55, result has 49.5 percent of original size [2021-05-01 06:51:22,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:51:22,358 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2021-05-01 06:51:22,376 INFO L142 QuantifierPusher]: treesize reduction 55, result has 40.9 percent of original size [2021-05-01 06:51:22,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:51:22,382 INFO L142 QuantifierPusher]: treesize reduction 53, result has 41.8 percent of original size [2021-05-01 06:51:22,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:51:22,605 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2021-05-01 06:51:22,610 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.2 percent of original size [2021-05-01 06:51:22,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:51:22,909 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-05-01 06:51:22,914 INFO L142 QuantifierPusher]: treesize reduction 88, result has 37.6 percent of original size [2021-05-01 06:51:22,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 06:51:23,162 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-05-01 06:51:23,166 INFO L142 QuantifierPusher]: treesize reduction 32, result has 60.0 percent of original size [2021-05-01 06:51:23,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:51:23,422 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 06:51:23,426 INFO L142 QuantifierPusher]: treesize reduction 32, result has 60.0 percent of original size [2021-05-01 06:51:23,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 06:51:23,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-05-01 06:51:23,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 06:51:23,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-05-01 06:51:23,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:51:23,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:51:23,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:51:23,871 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:51:23,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:51:24,004 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 06:51:24,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 06:51:24,157 INFO L142 QuantifierPusher]: treesize reduction 10, result has 71.4 percent of original size [2021-05-01 06:51:24,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:51:24,338 INFO L142 QuantifierPusher]: treesize reduction 25, result has 69.1 percent of original size [2021-05-01 06:51:24,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:51:24,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:24,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:51:24,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:24,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:51:24,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:24,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:51:24,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:24,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:51:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:51:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:51:25,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:25,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:51:25,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-01 06:51:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:51:25,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:25,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:51:25,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-01 06:51:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:51:25,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:25,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:51:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:51:25,193 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:51:25,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499445027] [2021-05-01 06:51:25,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1499445027] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:51:25,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:51:25,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-01 06:51:25,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939328451] [2021-05-01 06:51:25,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-01 06:51:25,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:51:25,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-01 06:51:25,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 06:51:25,194 INFO L87 Difference]: Start difference. First operand 2302 states and 2827 transitions. Second operand has 33 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 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) [2021-05-01 06:51:26,800 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-05-01 06:51:27,400 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-05-01 06:51:27,795 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-05-01 06:51:28,189 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 14 [2021-05-01 06:51:28,541 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-05-01 06:51:28,994 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-05-01 06:51:29,255 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2021-05-01 06:51:29,595 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-05-01 06:51:30,080 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2021-05-01 06:51:30,558 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-05-01 06:51:31,577 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-05-01 06:51:31,943 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-05-01 06:51:32,493 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-05-01 06:51:33,362 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2021-05-01 06:51:33,805 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-05-01 06:51:34,111 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2021-05-01 06:51:34,523 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-05-01 06:51:35,388 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-05-01 06:51:35,880 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-05-01 06:51:36,249 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-05-01 06:51:36,561 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-05-01 06:51:37,105 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2021-05-01 06:51:37,759 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-05-01 06:51:38,645 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-05-01 06:51:39,167 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-05-01 06:51:40,516 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2021-05-01 06:51:41,170 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-05-01 06:51:42,166 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-05-01 06:51:43,050 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-05-01 06:51:43,407 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-05-01 06:51:45,279 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-05-01 06:51:46,272 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-05-01 06:51:46,877 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-05-01 06:51:48,933 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-05-01 06:51:49,380 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2021-05-01 06:51:51,327 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-05-01 06:51:51,934 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-05-01 06:51:52,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:51:52,922 INFO L93 Difference]: Finished difference Result 2629 states and 3222 transitions. [2021-05-01 06:51:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-01 06:51:52,930 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), 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 [2021-05-01 06:51:52,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:51:52,933 INFO L225 Difference]: With dead ends: 2629 [2021-05-01 06:51:52,934 INFO L226 Difference]: Without dead ends: 2627 [2021-05-01 06:51:52,934 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 18197.3ms TimeCoverageRelationStatistics Valid=781, Invalid=5381, Unknown=0, NotChecked=0, Total=6162 [2021-05-01 06:51:52,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2021-05-01 06:51:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 2451. [2021-05-01 06:51:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 2321 states have (on average 1.211977595863852) internal successors, (2813), 2377 states have internal predecessors, (2813), 98 states have call successors, (98), 32 states have call predecessors, (98), 31 states have return successors, (97), 41 states have call predecessors, (97), 97 states have call successors, (97) [2021-05-01 06:51:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3008 transitions. [2021-05-01 06:51:55,282 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3008 transitions. Word has length 74 [2021-05-01 06:51:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:51:55,282 INFO L480 AbstractCegarLoop]: Abstraction has 2451 states and 3008 transitions. [2021-05-01 06:51:55,283 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), 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) [2021-05-01 06:51:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3008 transitions. [2021-05-01 06:51:55,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:51:55,285 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:51:55,285 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] [2021-05-01 06:51:55,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-05-01 06:51:55,285 INFO L428 AbstractCegarLoop]: === Iteration 121 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:51:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:51:55,285 INFO L82 PathProgramCache]: Analyzing trace with hash -218179534, now seen corresponding path program 27 times [2021-05-01 06:51:55,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:51:55,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082719394] [2021-05-01 06:51:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:51:55,297 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:51:55,298 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:51:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:51:55,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:55,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:51:55,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:55,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:51:55,386 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-05-01 06:51:55,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:51:55,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:55,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:51:55,453 INFO L142 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-05-01 06:51:55,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:51:55,470 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-05-01 06:51:55,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:51:55,514 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-05-01 06:51:55,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:51:55,560 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-05-01 06:51:55,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:51:55,607 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-05-01 06:51:55,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:51:55,662 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-05-01 06:51:55,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:51:55,722 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-05-01 06:51:55,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:51:55,791 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-05-01 06:51:55,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:51:55,864 INFO L142 QuantifierPusher]: treesize reduction 13, result has 40.9 percent of original size [2021-05-01 06:51:55,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:51:55,946 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-05-01 06:51:55,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:51:56,028 INFO L142 QuantifierPusher]: treesize reduction 15, result has 50.0 percent of original size [2021-05-01 06:51:56,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:51:56,131 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 06:51:56,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:51:56,389 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-05-01 06:51:56,395 INFO L142 QuantifierPusher]: treesize reduction 39, result has 48.7 percent of original size [2021-05-01 06:51:56,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 06:51:56,636 INFO L142 QuantifierPusher]: treesize reduction 29, result has 68.1 percent of original size [2021-05-01 06:51:56,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:51:57,016 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2021-05-01 06:51:57,022 INFO L142 QuantifierPusher]: treesize reduction 29, result has 67.8 percent of original size [2021-05-01 06:51:57,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 06:51:57,379 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2021-05-01 06:51:57,384 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:51:57,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:51:57,523 INFO L142 QuantifierPusher]: treesize reduction 51, result has 42.7 percent of original size [2021-05-01 06:51:57,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:51:57,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:57,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:51:57,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:57,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:51:57,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:57,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:51:57,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:57,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:51:58,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:51:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:51:58,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:51:58,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:51:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:51:58,085 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:51:58,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082719394] [2021-05-01 06:51:58,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1082719394] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:51:58,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:51:58,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 06:51:58,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119341519] [2021-05-01 06:51:58,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 06:51:58,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:51:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 06:51:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-05-01 06:51:58,086 INFO L87 Difference]: Start difference. First operand 2451 states and 3008 transitions. Second operand has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 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) [2021-05-01 06:52:21,960 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-01 06:52:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:52:32,577 INFO L93 Difference]: Finished difference Result 3447 states and 4237 transitions. [2021-05-01 06:52:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-01 06:52:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 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 [2021-05-01 06:52:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:52:32,591 INFO L225 Difference]: With dead ends: 3447 [2021-05-01 06:52:32,591 INFO L226 Difference]: Without dead ends: 3445 [2021-05-01 06:52:32,592 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 11127.3ms TimeCoverageRelationStatistics Valid=640, Invalid=8866, Unknown=0, NotChecked=0, Total=9506 [2021-05-01 06:52:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2021-05-01 06:52:35,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 2643. [2021-05-01 06:52:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 2499 states have (on average 1.2160864345738296) internal successors, (3039), 2565 states have internal predecessors, (3039), 108 states have call successors, (108), 36 states have call predecessors, (108), 35 states have return successors, (107), 41 states have call predecessors, (107), 107 states have call successors, (107) [2021-05-01 06:52:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3254 transitions. [2021-05-01 06:52:35,305 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3254 transitions. Word has length 72 [2021-05-01 06:52:35,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:52:35,305 INFO L480 AbstractCegarLoop]: Abstraction has 2643 states and 3254 transitions. [2021-05-01 06:52:35,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 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) [2021-05-01 06:52:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3254 transitions. [2021-05-01 06:52:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:52:35,307 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:52:35,307 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] [2021-05-01 06:52:35,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-05-01 06:52:35,308 INFO L428 AbstractCegarLoop]: === Iteration 122 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:52:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:52:35,308 INFO L82 PathProgramCache]: Analyzing trace with hash 867792438, now seen corresponding path program 33 times [2021-05-01 06:52:35,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:52:35,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207410874] [2021-05-01 06:52:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:52:35,323 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:52:35,325 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:52:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:52:35,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:35,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:52:35,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:35,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:52:35,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:35,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:52:35,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:35,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:52:35,468 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:52:35,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:52:35,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:35,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:52:35,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:35,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:52:35,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:35,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:52:35,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-05-01 06:52:35,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:52:35,727 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-05-01 06:52:35,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:52:35,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-05-01 06:52:35,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:52:35,868 INFO L142 QuantifierPusher]: treesize reduction 36, result has 46.3 percent of original size [2021-05-01 06:52:35,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 06:52:36,016 INFO L142 QuantifierPusher]: treesize reduction 22, result has 69.0 percent of original size [2021-05-01 06:52:36,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 06:52:36,178 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2021-05-01 06:52:36,183 INFO L142 QuantifierPusher]: treesize reduction 22, result has 72.8 percent of original size [2021-05-01 06:52:36,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 06:52:36,379 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2021-05-01 06:52:36,383 INFO L142 QuantifierPusher]: treesize reduction 22, result has 72.2 percent of original size [2021-05-01 06:52:36,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 06:52:36,523 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:52:36,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:52:36,644 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-05-01 06:52:36,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:52:36,791 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.2 percent of original size [2021-05-01 06:52:36,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:52:37,005 INFO L142 QuantifierPusher]: treesize reduction 10, result has 87.2 percent of original size [2021-05-01 06:52:37,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 06:52:37,235 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-05-01 06:52:37,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:52:37,393 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-05-01 06:52:37,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:52:37,513 INFO L142 QuantifierPusher]: treesize reduction 32, result has 52.9 percent of original size [2021-05-01 06:52:37,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:52:37,743 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-05-01 06:52:37,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:37,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:52:37,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:37,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:52:37,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:37,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:52:38,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:38,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:52:38,258 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-01 06:52:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:52:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:52:38,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:38,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:52:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:52:38,271 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:52:38,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207410874] [2021-05-01 06:52:38,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [207410874] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:52:38,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:52:38,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 06:52:38,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805671257] [2021-05-01 06:52:38,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 06:52:38,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:52:38,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 06:52:38,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-05-01 06:52:38,272 INFO L87 Difference]: Start difference. First operand 2643 states and 3254 transitions. Second operand has 26 states, 25 states have (on average 2.48) internal successors, (62), 24 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) [2021-05-01 06:52:39,723 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2021-05-01 06:52:42,605 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2021-05-01 06:52:43,810 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2021-05-01 06:52:44,030 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 06:52:45,282 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-05-01 06:52:45,627 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-05-01 06:52:45,974 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-05-01 06:52:46,598 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2021-05-01 06:52:47,065 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-05-01 06:52:47,373 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-05-01 06:52:48,563 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2021-05-01 06:52:50,400 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2021-05-01 06:52:50,648 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-05-01 06:52:51,262 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2021-05-01 06:52:51,634 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2021-05-01 06:52:52,161 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-05-01 06:52:52,549 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 06:52:53,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:52:53,887 INFO L93 Difference]: Finished difference Result 2827 states and 3478 transitions. [2021-05-01 06:52:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-01 06:52:53,897 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.48) internal successors, (62), 24 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 [2021-05-01 06:52:53,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:52:53,901 INFO L225 Difference]: With dead ends: 2827 [2021-05-01 06:52:53,901 INFO L226 Difference]: Without dead ends: 2825 [2021-05-01 06:52:53,902 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 9199.8ms TimeCoverageRelationStatistics Valid=597, Invalid=3435, Unknown=0, NotChecked=0, Total=4032 [2021-05-01 06:52:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-05-01 06:52:56,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2665. [2021-05-01 06:52:56,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2520 states have (on average 1.2166666666666666) internal successors, (3066), 2586 states have internal predecessors, (3066), 108 states have call successors, (108), 37 states have call predecessors, (108), 36 states have return successors, (107), 41 states have call predecessors, (107), 107 states have call successors, (107) [2021-05-01 06:52:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3281 transitions. [2021-05-01 06:52:56,562 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3281 transitions. Word has length 72 [2021-05-01 06:52:56,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:52:56,562 INFO L480 AbstractCegarLoop]: Abstraction has 2665 states and 3281 transitions. [2021-05-01 06:52:56,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 2.48) internal successors, (62), 24 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) [2021-05-01 06:52:56,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3281 transitions. [2021-05-01 06:52:56,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 06:52:56,565 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:52:56,565 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] [2021-05-01 06:52:56,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-05-01 06:52:56,565 INFO L428 AbstractCegarLoop]: === Iteration 123 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:52:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:52:56,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1258025424, now seen corresponding path program 34 times [2021-05-01 06:52:56,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:52:56,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515208642] [2021-05-01 06:52:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:52:56,577 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:52:56,578 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:52:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:52:56,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:56,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:52:56,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:56,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:52:56,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:52:56,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:52:56,711 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:52:56,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:52:56,795 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:52:56,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:52:56,813 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:52:56,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:52:56,899 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:52:56,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:52:56,924 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:52:56,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:52:57,015 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:52:57,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:52:57,044 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-05-01 06:52:57,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:52:57,147 INFO L142 QuantifierPusher]: treesize reduction 16, result has 67.3 percent of original size [2021-05-01 06:52:57,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:52:57,188 INFO L142 QuantifierPusher]: treesize reduction 30, result has 51.6 percent of original size [2021-05-01 06:52:57,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 06:52:57,304 INFO L142 QuantifierPusher]: treesize reduction 30, result has 44.4 percent of original size [2021-05-01 06:52:57,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:52:57,344 INFO L142 QuantifierPusher]: treesize reduction 22, result has 45.0 percent of original size [2021-05-01 06:52:57,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 06:52:57,420 INFO L142 QuantifierPusher]: treesize reduction 36, result has 41.9 percent of original size [2021-05-01 06:52:57,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:52:57,443 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.8 percent of original size [2021-05-01 06:52:57,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:52:57,568 INFO L142 QuantifierPusher]: treesize reduction 64, result has 58.2 percent of original size [2021-05-01 06:52:57,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-05-01 06:52:57,626 INFO L142 QuantifierPusher]: treesize reduction 64, result has 57.6 percent of original size [2021-05-01 06:52:57,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 06:52:57,684 INFO L142 QuantifierPusher]: treesize reduction 30, result has 50.0 percent of original size [2021-05-01 06:52:57,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 06:52:57,706 INFO L142 QuantifierPusher]: treesize reduction 21, result has 65.6 percent of original size [2021-05-01 06:52:57,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:52:57,731 INFO L142 QuantifierPusher]: treesize reduction 24, result has 75.3 percent of original size [2021-05-01 06:52:57,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 06:52:57,919 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2021-05-01 06:52:57,924 INFO L142 QuantifierPusher]: treesize reduction 28, result has 58.8 percent of original size [2021-05-01 06:52:57,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:52:57,952 INFO L142 QuantifierPusher]: treesize reduction 28, result has 58.8 percent of original size [2021-05-01 06:52:57,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:52:57,986 INFO L142 QuantifierPusher]: treesize reduction 49, result has 52.4 percent of original size [2021-05-01 06:52:57,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 06:52:58,134 INFO L142 QuantifierPusher]: treesize reduction 35, result has 64.3 percent of original size [2021-05-01 06:52:58,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:52:58,307 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 16 [2021-05-01 06:52:58,313 INFO L142 QuantifierPusher]: treesize reduction 61, result has 50.8 percent of original size [2021-05-01 06:52:58,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:52:58,560 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2021-05-01 06:52:58,565 INFO L142 QuantifierPusher]: treesize reduction 53, result has 61.9 percent of original size [2021-05-01 06:52:58,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:52:58,933 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2021-05-01 06:52:58,939 INFO L142 QuantifierPusher]: treesize reduction 53, result has 64.7 percent of original size [2021-05-01 06:52:58,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 06:52:59,321 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 25 [2021-05-01 06:52:59,327 INFO L142 QuantifierPusher]: treesize reduction 53, result has 64.2 percent of original size [2021-05-01 06:52:59,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 06:52:59,674 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2021-05-01 06:52:59,678 INFO L142 QuantifierPusher]: treesize reduction 40, result has 60.8 percent of original size [2021-05-01 06:52:59,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:52:59,931 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 19 [2021-05-01 06:52:59,936 INFO L142 QuantifierPusher]: treesize reduction 40, result has 60.8 percent of original size [2021-05-01 06:52:59,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 06:53:00,218 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 19 [2021-05-01 06:53:00,226 INFO L142 QuantifierPusher]: treesize reduction 53, result has 61.9 percent of original size [2021-05-01 06:53:00,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 06:53:00,629 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 24 [2021-05-01 06:53:00,635 INFO L142 QuantifierPusher]: treesize reduction 53, result has 56.9 percent of original size [2021-05-01 06:53:00,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 06:53:00,749 INFO L142 QuantifierPusher]: treesize reduction 55, result has 55.6 percent of original size [2021-05-01 06:53:00,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:53:00,986 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 19 [2021-05-01 06:53:00,991 INFO L142 QuantifierPusher]: treesize reduction 54, result has 63.3 percent of original size [2021-05-01 06:53:00,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:53:01,325 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2021-05-01 06:53:01,330 INFO L142 QuantifierPusher]: treesize reduction 41, result has 67.5 percent of original size [2021-05-01 06:53:01,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-05-01 06:53:01,641 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2021-05-01 06:53:01,646 INFO L142 QuantifierPusher]: treesize reduction 34, result has 67.0 percent of original size [2021-05-01 06:53:01,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 06:53:01,934 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-05-01 06:53:01,938 INFO L142 QuantifierPusher]: treesize reduction 42, result has 56.7 percent of original size [2021-05-01 06:53:01,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 06:53:02,277 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2021-05-01 06:53:02,280 INFO L142 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-05-01 06:53:02,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:53:02,417 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.1 percent of original size [2021-05-01 06:53:02,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:53:02,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:02,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:53:02,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:02,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:53:02,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:02,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:53:02,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:02,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:03,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:53:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:53:03,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:03,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:53:03,205 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:53:03,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515208642] [2021-05-01 06:53:03,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1515208642] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:53:03,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:53:03,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-01 06:53:03,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653854470] [2021-05-01 06:53:03,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-01 06:53:03,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:53:03,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-01 06:53:03,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2021-05-01 06:53:03,206 INFO L87 Difference]: Start difference. First operand 2665 states and 3281 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) [2021-05-01 06:53:07,036 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2021-05-01 06:53:08,433 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-05-01 06:53:08,850 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2021-05-01 06:53:10,871 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2021-05-01 06:53:12,286 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-05-01 06:53:12,678 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2021-05-01 06:53:13,200 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2021-05-01 06:53:14,657 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2021-05-01 06:53:15,250 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2021-05-01 06:53:16,532 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2021-05-01 06:53:17,055 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-05-01 06:53:21,637 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2021-05-01 06:53:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:53:23,592 INFO L93 Difference]: Finished difference Result 3000 states and 3681 transitions. [2021-05-01 06:53:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-01 06:53:23,601 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 [2021-05-01 06:53:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:53:23,606 INFO L225 Difference]: With dead ends: 3000 [2021-05-01 06:53:23,606 INFO L226 Difference]: Without dead ends: 2998 [2021-05-01 06:53:23,607 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 13 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 11747.1ms TimeCoverageRelationStatistics Valid=363, Invalid=3419, Unknown=0, NotChecked=0, Total=3782 [2021-05-01 06:53:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2021-05-01 06:53:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2684. [2021-05-01 06:53:26,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2535 states have (on average 1.2161735700197238) internal successors, (3083), 2604 states have internal predecessors, (3083), 111 states have call successors, (111), 38 states have call predecessors, (111), 37 states have return successors, (110), 41 states have call predecessors, (110), 110 states have call successors, (110) [2021-05-01 06:53:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3304 transitions. [2021-05-01 06:53:26,269 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3304 transitions. Word has length 72 [2021-05-01 06:53:26,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:53:26,270 INFO L480 AbstractCegarLoop]: Abstraction has 2684 states and 3304 transitions. [2021-05-01 06:53:26,270 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) [2021-05-01 06:53:26,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3304 transitions. [2021-05-01 06:53:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-05-01 06:53:26,272 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:53:26,272 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] [2021-05-01 06:53:26,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-05-01 06:53:26,273 INFO L428 AbstractCegarLoop]: === Iteration 124 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:53:26,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:53:26,273 INFO L82 PathProgramCache]: Analyzing trace with hash 139638767, now seen corresponding path program 26 times [2021-05-01 06:53:26,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:53:26,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284597039] [2021-05-01 06:53:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:53:26,287 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:53:26,288 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:53:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:53:26,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:26,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:26,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:26,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:53:26,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:26,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:53:26,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:26,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:53:26,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:26,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:53:26,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:26,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:53:26,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:26,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:53:26,719 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:53:26,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:53:26,743 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-05-01 06:53:26,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:53:26,772 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-05-01 06:53:26,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:53:26,805 INFO L142 QuantifierPusher]: treesize reduction 31, result has 67.0 percent of original size [2021-05-01 06:53:26,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:53:27,076 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 17 [2021-05-01 06:53:27,080 INFO L142 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size [2021-05-01 06:53:27,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:53:27,120 INFO L142 QuantifierPusher]: treesize reduction 13, result has 63.9 percent of original size [2021-05-01 06:53:27,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:53:27,158 INFO L142 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size [2021-05-01 06:53:27,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:53:27,285 INFO L142 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-05-01 06:53:27,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:53:27,507 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2021-05-01 06:53:27,512 INFO L142 QuantifierPusher]: treesize reduction 28, result has 69.2 percent of original size [2021-05-01 06:53:27,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 06:53:27,773 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2021-05-01 06:53:27,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:53:27,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:53:27,858 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-05-01 06:53:27,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:53:27,969 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:53:27,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:53:28,097 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-05-01 06:53:28,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 06:53:28,226 INFO L142 QuantifierPusher]: treesize reduction 29, result has 69.5 percent of original size [2021-05-01 06:53:28,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 06:53:28,475 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 22 [2021-05-01 06:53:28,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:28,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:53:28,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:28,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:53:28,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:28,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:53:28,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:28,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:53:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:53:28,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:28,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-01 06:53:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:53:28,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:28,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:28,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-01 06:53:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:53:28,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:28,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-01 06:53:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:53:28,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:28,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:53:28,942 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:53:28,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284597039] [2021-05-01 06:53:28,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1284597039] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:53:28,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:53:28,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 06:53:28,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876242255] [2021-05-01 06:53:28,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 06:53:28,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:53:28,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 06:53:28,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-05-01 06:53:28,943 INFO L87 Difference]: Start difference. First operand 2684 states and 3304 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)