/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/vogal-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 06:47:32,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 06:47:32,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 06:47:32,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 06:47:32,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 06:47:32,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 06:47:32,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 06:47:32,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 06:47:32,157 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 06:47:32,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 06:47:32,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 06:47:32,162 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 06:47:32,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 06:47:32,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 06:47:32,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 06:47:32,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 06:47:32,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 06:47:32,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 06:47:32,165 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 06:47:32,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 06:47:32,165 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 06:47:32,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 06:47:32,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 06:47:32,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 06:47:32,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 06:47:32,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 06:47:32,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:47:32,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 06:47:32,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 06:47:32,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 06:47:32,166 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 06:47:32,167 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 06:47:32,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 06:47:32,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 06:47:32,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 06:47:32,547 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 06:47:32,548 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 06:47:32,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/vogal-1.i [2021-04-16 06:47:32,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c613ce62f/79cf3a40537b404c85fe375e35007d15/FLAG3eec0420e [2021-04-16 06:47:33,083 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 06:47:33,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-1.i [2021-04-16 06:47:33,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c613ce62f/79cf3a40537b404c85fe375e35007d15/FLAG3eec0420e [2021-04-16 06:47:33,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c613ce62f/79cf3a40537b404c85fe375e35007d15 [2021-04-16 06:47:33,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 06:47:33,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 06:47:33,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 06:47:33,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 06:47:33,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 06:47:33,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474f117a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33, skipping insertion in model container [2021-04-16 06:47:33,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 06:47:33,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 06:47:33,722 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-1.i[895,908] [2021-04-16 06:47:33,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:47:33,781 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 06:47:33,815 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-1.i[895,908] [2021-04-16 06:47:33,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:47:33,854 INFO L208 MainTranslator]: Completed translation [2021-04-16 06:47:33,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33 WrapperNode [2021-04-16 06:47:33,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 06:47:33,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 06:47:33,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 06:47:33,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 06:47:33,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 06:47:33,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 06:47:33,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 06:47:33,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 06:47:33,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:47:34,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 06:47:34,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 06:47:34,002 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 06:47:34,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 06:47:34,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 06:47:34,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 06:47:34,003 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 06:47:34,003 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 06:47:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 06:47:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 06:47:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 06:47:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 06:47:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 06:47:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 06:47:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-04-16 06:47:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 06:47:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 06:47:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 06:47:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 06:47:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 06:47:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 06:47:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 06:47:34,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 06:47:34,403 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-04-16 06:47:34,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:47:34 BoogieIcfgContainer [2021-04-16 06:47:34,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 06:47:34,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 06:47:34,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 06:47:34,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 06:47:34,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 06:47:33" (1/3) ... [2021-04-16 06:47:34,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15de12bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:47:34, skipping insertion in model container [2021-04-16 06:47:34,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (2/3) ... [2021-04-16 06:47:34,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15de12bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:47:34, skipping insertion in model container [2021-04-16 06:47:34,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:47:34" (3/3) ... [2021-04-16 06:47:34,410 INFO L111 eAbstractionObserver]: Analyzing ICFG vogal-1.i [2021-04-16 06:47:34,419 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 06:47:34,423 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 06:47:34,437 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 06:47:34,462 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 06:47:34,462 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 06:47:34,462 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 06:47:34,462 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 06:47:34,462 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 06:47:34,462 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 06:47:34,463 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 06:47:34,463 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 06:47:34,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:47:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-04-16 06:47:34,495 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:34,496 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:34,497 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:34,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:34,503 INFO L82 PathProgramCache]: Analyzing trace with hash -366742854, now seen corresponding path program 1 times [2021-04-16 06:47:34,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:34,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442416400] [2021-04-16 06:47:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:34,578 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:34,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:34,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:34,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:34,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:34,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:34,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:34,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442416400] [2021-04-16 06:47:34,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:34,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 06:47:34,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750594900] [2021-04-16 06:47:34,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 06:47:34,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:34,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 06:47:34,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:47:34,821 INFO L87 Difference]: Start difference. First operand has 37 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 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 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:34,929 INFO L93 Difference]: Finished difference Result 66 states and 95 transitions. [2021-04-16 06:47:34,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 06:47:34,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 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 18 [2021-04-16 06:47:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:34,937 INFO L225 Difference]: With dead ends: 66 [2021-04-16 06:47:34,937 INFO L226 Difference]: Without dead ends: 30 [2021-04-16 06:47:34,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:47:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-04-16 06:47:34,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-04-16 06:47:34,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-04-16 06:47:34,975 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 18 [2021-04-16 06:47:34,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:34,975 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-04-16 06:47:34,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-04-16 06:47:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-16 06:47:34,977 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:34,977 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:34,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 06:47:34,977 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash -864138192, now seen corresponding path program 1 times [2021-04-16 06:47:34,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:34,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745947230] [2021-04-16 06:47:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:34,981 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:35,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:35,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745947230] [2021-04-16 06:47:35,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:35,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 06:47:35,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920328690] [2021-04-16 06:47:35,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 06:47:35,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:35,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 06:47:35,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 06:47:35,133 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:35,282 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2021-04-16 06:47:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 06:47:35,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 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 20 [2021-04-16 06:47:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:35,287 INFO L225 Difference]: With dead ends: 67 [2021-04-16 06:47:35,287 INFO L226 Difference]: Without dead ends: 45 [2021-04-16 06:47:35,290 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 06:47:35,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-04-16 06:47:35,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2021-04-16 06:47:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-04-16 06:47:35,312 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 20 [2021-04-16 06:47:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:35,313 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-04-16 06:47:35,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,313 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-04-16 06:47:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-04-16 06:47:35,318 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:35,319 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:35,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 06:47:35,319 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:35,320 INFO L82 PathProgramCache]: Analyzing trace with hash 32041234, now seen corresponding path program 1 times [2021-04-16 06:47:35,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:35,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433012474] [2021-04-16 06:47:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:35,343 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:35,349 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:35,449 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:35,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:35,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:35,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433012474] [2021-04-16 06:47:35,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:35,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:47:35,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338705064] [2021-04-16 06:47:35,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:47:35,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:35,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:47:35,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:35,534 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:35,690 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2021-04-16 06:47:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:47:35,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 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 22 [2021-04-16 06:47:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:35,693 INFO L225 Difference]: With dead ends: 82 [2021-04-16 06:47:35,694 INFO L226 Difference]: Without dead ends: 60 [2021-04-16 06:47:35,695 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-04-16 06:47:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 33. [2021-04-16 06:47:35,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-04-16 06:47:35,711 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 22 [2021-04-16 06:47:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:35,711 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-04-16 06:47:35,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-04-16 06:47:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-04-16 06:47:35,713 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:35,713 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] [2021-04-16 06:47:35,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 06:47:35,713 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:35,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:35,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2027956876, now seen corresponding path program 2 times [2021-04-16 06:47:35,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:35,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509436393] [2021-04-16 06:47:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:35,728 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:35,731 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:35,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:35,836 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:35,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:35,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:35,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509436393] [2021-04-16 06:47:35,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:35,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:47:35,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445929953] [2021-04-16 06:47:35,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:47:35,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:35,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:47:35,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:47:35,892 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:36,076 INFO L93 Difference]: Finished difference Result 97 states and 129 transitions. [2021-04-16 06:47:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 06:47:36,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 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 24 [2021-04-16 06:47:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:36,078 INFO L225 Difference]: With dead ends: 97 [2021-04-16 06:47:36,078 INFO L226 Difference]: Without dead ends: 75 [2021-04-16 06:47:36,079 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:47:36,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-04-16 06:47:36,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 35. [2021-04-16 06:47:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-04-16 06:47:36,085 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 24 [2021-04-16 06:47:36,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:36,085 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-04-16 06:47:36,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-04-16 06:47:36,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-04-16 06:47:36,086 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:36,086 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:36,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-16 06:47:36,087 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:36,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:36,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1706217130, now seen corresponding path program 3 times [2021-04-16 06:47:36,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:36,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405241280] [2021-04-16 06:47:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:36,093 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:36,095 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:36,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:36,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,171 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:36,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:36,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:36,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:36,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405241280] [2021-04-16 06:47:36,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:36,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:47:36,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163545062] [2021-04-16 06:47:36,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:47:36,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:36,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:47:36,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:36,249 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:36,479 INFO L93 Difference]: Finished difference Result 112 states and 150 transitions. [2021-04-16 06:47:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:47:36,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 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 26 [2021-04-16 06:47:36,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:36,481 INFO L225 Difference]: With dead ends: 112 [2021-04-16 06:47:36,481 INFO L226 Difference]: Without dead ends: 90 [2021-04-16 06:47:36,482 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:36,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-04-16 06:47:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 37. [2021-04-16 06:47:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-04-16 06:47:36,496 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 26 [2021-04-16 06:47:36,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:36,497 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-04-16 06:47:36,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-04-16 06:47:36,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-04-16 06:47:36,497 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:36,497 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:36,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-16 06:47:36,498 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:36,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1751966536, now seen corresponding path program 4 times [2021-04-16 06:47:36,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:36,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814531940] [2021-04-16 06:47:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:36,506 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:36,507 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:36,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:36,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,609 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:36,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:36,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:36,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:36,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814531940] [2021-04-16 06:47:36,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:36,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:47:36,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085389231] [2021-04-16 06:47:36,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:47:36,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:36,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:47:36,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:36,669 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:36,963 INFO L93 Difference]: Finished difference Result 127 states and 171 transitions. [2021-04-16 06:47:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:47:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-04-16 06:47:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:36,966 INFO L225 Difference]: With dead ends: 127 [2021-04-16 06:47:36,967 INFO L226 Difference]: Without dead ends: 105 [2021-04-16 06:47:36,967 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:36,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-04-16 06:47:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 39. [2021-04-16 06:47:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-04-16 06:47:36,982 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 28 [2021-04-16 06:47:36,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:36,982 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-04-16 06:47:36,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-04-16 06:47:36,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-04-16 06:47:36,983 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:36,983 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:36,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-16 06:47:36,983 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:36,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:36,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1527494554, now seen corresponding path program 5 times [2021-04-16 06:47:36,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:36,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947727695] [2021-04-16 06:47:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:36,992 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:36,993 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:37,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:37,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:37,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:37,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947727695] [2021-04-16 06:47:37,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:37,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:47:37,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235373043] [2021-04-16 06:47:37,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:47:37,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:37,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:47:37,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:37,152 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:37,269 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2021-04-16 06:47:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:47:37,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 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 30 [2021-04-16 06:47:37,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:37,271 INFO L225 Difference]: With dead ends: 63 [2021-04-16 06:47:37,271 INFO L226 Difference]: Without dead ends: 58 [2021-04-16 06:47:37,272 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:37,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-04-16 06:47:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-04-16 06:47:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 46 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2021-04-16 06:47:37,288 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 30 [2021-04-16 06:47:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:37,290 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2021-04-16 06:47:37,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2021-04-16 06:47:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-04-16 06:47:37,295 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:37,296 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:37,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-16 06:47:37,296 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:37,296 INFO L82 PathProgramCache]: Analyzing trace with hash 810905395, now seen corresponding path program 1 times [2021-04-16 06:47:37,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:37,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299157790] [2021-04-16 06:47:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:37,305 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:37,308 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:37,359 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:37,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:37,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:37,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299157790] [2021-04-16 06:47:37,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:37,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:47:37,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919393055] [2021-04-16 06:47:37,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:47:37,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:37,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:47:37,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:37,401 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:37,475 INFO L93 Difference]: Finished difference Result 104 states and 142 transitions. [2021-04-16 06:47:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:47:37,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 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 36 [2021-04-16 06:47:37,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:37,476 INFO L225 Difference]: With dead ends: 104 [2021-04-16 06:47:37,476 INFO L226 Difference]: Without dead ends: 75 [2021-04-16 06:47:37,477 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:37,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-04-16 06:47:37,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2021-04-16 06:47:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2021-04-16 06:47:37,487 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 36 [2021-04-16 06:47:37,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:37,488 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2021-04-16 06:47:37,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2021-04-16 06:47:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-04-16 06:47:37,490 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:37,490 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:37,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-16 06:47:37,490 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:37,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1464313968, now seen corresponding path program 2 times [2021-04-16 06:47:37,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:37,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042578983] [2021-04-16 06:47:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:37,497 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:37,498 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:37,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:47:37,596 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-04-16 06:47:37,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:47:37,611 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.3 percent of original size [2021-04-16 06:47:37,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:47:37,615 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:47:37,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:37,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042578983] [2021-04-16 06:47:37,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:37,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:47:37,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344640038] [2021-04-16 06:47:37,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:47:37,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:37,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:47:37,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:37,644 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:37,720 INFO L93 Difference]: Finished difference Result 154 states and 198 transitions. [2021-04-16 06:47:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:47:37,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 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 39 [2021-04-16 06:47:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:37,722 INFO L225 Difference]: With dead ends: 154 [2021-04-16 06:47:37,722 INFO L226 Difference]: Without dead ends: 109 [2021-04-16 06:47:37,724 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:37,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-04-16 06:47:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71. [2021-04-16 06:47:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2021-04-16 06:47:37,736 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 39 [2021-04-16 06:47:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:37,737 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2021-04-16 06:47:37,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2021-04-16 06:47:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-04-16 06:47:37,739 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:37,739 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-04-16 06:47:37,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-16 06:47:37,739 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:37,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:37,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2131958580, now seen corresponding path program 1 times [2021-04-16 06:47:37,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:37,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580099550] [2021-04-16 06:47:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:37,746 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:37,748 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:37,852 INFO L142 QuantifierPusher]: treesize reduction 4, result has 96.2 percent of original size [2021-04-16 06:47:37,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:47:37,904 INFO L142 QuantifierPusher]: treesize reduction 34, result has 90.4 percent of original size [2021-04-16 06:47:37,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-04-16 06:47:37,990 INFO L142 QuantifierPusher]: treesize reduction 34, result has 90.4 percent of original size [2021-04-16 06:47:37,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-04-16 06:47:38,069 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-04-16 06:47:38,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:47:38,087 INFO L142 QuantifierPusher]: treesize reduction 17, result has 91.9 percent of original size [2021-04-16 06:47:38,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-04-16 06:47:38,150 INFO L142 QuantifierPusher]: treesize reduction 43, result has 86.4 percent of original size [2021-04-16 06:47:38,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-04-16 06:47:38,208 INFO L142 QuantifierPusher]: treesize reduction 39, result has 82.6 percent of original size [2021-04-16 06:47:38,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:47:38,214 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:47:38,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:38,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:38,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580099550] [2021-04-16 06:47:38,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:38,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:47:38,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373931640] [2021-04-16 06:47:38,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:47:38,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:38,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:47:38,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:38,248 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:38,377 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2021-04-16 06:47:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:38,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 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 40 [2021-04-16 06:47:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:38,378 INFO L225 Difference]: With dead ends: 99 [2021-04-16 06:47:38,378 INFO L226 Difference]: Without dead ends: 69 [2021-04-16 06:47:38,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 321.0ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:47:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-04-16 06:47:38,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-04-16 06:47:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2021-04-16 06:47:38,388 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 40 [2021-04-16 06:47:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:38,389 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2021-04-16 06:47:38,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2021-04-16 06:47:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-04-16 06:47:38,390 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:38,390 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:38,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-16 06:47:38,390 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:38,390 INFO L82 PathProgramCache]: Analyzing trace with hash 2076492661, now seen corresponding path program 1 times [2021-04-16 06:47:38,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:38,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525058928] [2021-04-16 06:47:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:38,396 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:38,398 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:38,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:38,480 INFO L142 QuantifierPusher]: treesize reduction 4, result has 96.2 percent of original size [2021-04-16 06:47:38,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:47:38,512 INFO L142 QuantifierPusher]: treesize reduction 34, result has 90.4 percent of original size [2021-04-16 06:47:38,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 319 [2021-04-16 06:47:38,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:47:38,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:38,577 INFO L142 QuantifierPusher]: treesize reduction 17, result has 92.0 percent of original size [2021-04-16 06:47:38,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-04-16 06:47:38,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:38,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:38,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:38,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525058928] [2021-04-16 06:47:38,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:38,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:47:38,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065698582] [2021-04-16 06:47:38,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:47:38,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:38,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:47:38,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:38,673 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:38,772 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2021-04-16 06:47:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-04-16 06:47:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:38,773 INFO L225 Difference]: With dead ends: 110 [2021-04-16 06:47:38,773 INFO L226 Difference]: Without dead ends: 105 [2021-04-16 06:47:38,773 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 164.8ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:38,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-04-16 06:47:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 71. [2021-04-16 06:47:38,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 66 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2021-04-16 06:47:38,779 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 41 [2021-04-16 06:47:38,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:38,779 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2021-04-16 06:47:38,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2021-04-16 06:47:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-04-16 06:47:38,780 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:38,780 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-04-16 06:47:38,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-16 06:47:38,780 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:38,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:38,781 INFO L82 PathProgramCache]: Analyzing trace with hash -334288281, now seen corresponding path program 1 times [2021-04-16 06:47:38,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:38,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893546951] [2021-04-16 06:47:38,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:38,785 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:38,786 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:38,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:38,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:38,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:38,833 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-04-16 06:47:38,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:47:38,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:38,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:38,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893546951] [2021-04-16 06:47:38,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:38,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:47:38,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702361931] [2021-04-16 06:47:38,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:47:38,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:38,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:47:38,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:38,879 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:39,018 INFO L93 Difference]: Finished difference Result 255 states and 333 transitions. [2021-04-16 06:47:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:47:39,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 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 [2021-04-16 06:47:39,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:39,020 INFO L225 Difference]: With dead ends: 255 [2021-04-16 06:47:39,020 INFO L226 Difference]: Without dead ends: 229 [2021-04-16 06:47:39,021 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:39,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-04-16 06:47:39,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 77. [2021-04-16 06:47:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 72 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2021-04-16 06:47:39,030 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 42 [2021-04-16 06:47:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:39,031 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2021-04-16 06:47:39,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2021-04-16 06:47:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-16 06:47:39,031 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:39,031 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 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] [2021-04-16 06:47:39,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-16 06:47:39,032 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:39,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:39,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1673688413, now seen corresponding path program 2 times [2021-04-16 06:47:39,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:39,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8784802] [2021-04-16 06:47:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:39,038 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:39,039 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:39,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,117 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 06:47:39,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:39,136 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-04-16 06:47:39,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:39,137 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:47:39,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:39,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:39,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8784802] [2021-04-16 06:47:39,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:39,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:47:39,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124724516] [2021-04-16 06:47:39,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:47:39,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:39,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:47:39,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:39,181 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:39,416 INFO L93 Difference]: Finished difference Result 270 states and 352 transitions. [2021-04-16 06:47:39,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:47:39,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 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 46 [2021-04-16 06:47:39,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:39,419 INFO L225 Difference]: With dead ends: 270 [2021-04-16 06:47:39,419 INFO L226 Difference]: Without dead ends: 244 [2021-04-16 06:47:39,420 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-04-16 06:47:39,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 79. [2021-04-16 06:47:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 74 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2021-04-16 06:47:39,433 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 46 [2021-04-16 06:47:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:39,434 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2021-04-16 06:47:39,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2021-04-16 06:47:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-04-16 06:47:39,434 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:39,434 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2021-04-16 06:47:39,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-04-16 06:47:39,435 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:39,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:39,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1875303096, now seen corresponding path program 3 times [2021-04-16 06:47:39,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:39,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972989031] [2021-04-16 06:47:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:39,442 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:39,444 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:39,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,527 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 06:47:39,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:39,548 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-04-16 06:47:39,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:39,550 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:47:39,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:39,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:39,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972989031] [2021-04-16 06:47:39,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:39,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:47:39,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137508444] [2021-04-16 06:47:39,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:47:39,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:39,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:47:39,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:39,594 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:39,864 INFO L93 Difference]: Finished difference Result 317 states and 415 transitions. [2021-04-16 06:47:39,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:39,865 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 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 48 [2021-04-16 06:47:39,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:39,866 INFO L225 Difference]: With dead ends: 317 [2021-04-16 06:47:39,867 INFO L226 Difference]: Without dead ends: 291 [2021-04-16 06:47:39,867 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-04-16 06:47:39,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 81. [2021-04-16 06:47:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 76 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2021-04-16 06:47:39,894 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 48 [2021-04-16 06:47:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:39,894 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2021-04-16 06:47:39,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2021-04-16 06:47:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-04-16 06:47:39,895 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:39,895 INFO L519 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 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] [2021-04-16 06:47:39,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-04-16 06:47:39,895 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:39,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:39,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1941482157, now seen corresponding path program 4 times [2021-04-16 06:47:39,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:39,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953473622] [2021-04-16 06:47:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:39,901 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:39,902 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:39,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,995 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 06:47:39,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:40,015 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-04-16 06:47:40,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:40,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:47:40,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:40,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:40,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953473622] [2021-04-16 06:47:40,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:40,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:47:40,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039673115] [2021-04-16 06:47:40,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:47:40,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:40,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:47:40,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:40,066 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:40,417 INFO L93 Difference]: Finished difference Result 364 states and 478 transitions. [2021-04-16 06:47:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:47:40,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-04-16 06:47:40,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:40,419 INFO L225 Difference]: With dead ends: 364 [2021-04-16 06:47:40,419 INFO L226 Difference]: Without dead ends: 338 [2021-04-16 06:47:40,421 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:40,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-04-16 06:47:40,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 83. [2021-04-16 06:47:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 78 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2021-04-16 06:47:40,437 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 50 [2021-04-16 06:47:40,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:40,438 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2021-04-16 06:47:40,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,438 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2021-04-16 06:47:40,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-04-16 06:47:40,438 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:40,438 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:40,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-04-16 06:47:40,439 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:40,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:40,439 INFO L82 PathProgramCache]: Analyzing trace with hash 28908263, now seen corresponding path program 1 times [2021-04-16 06:47:40,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:40,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925136849] [2021-04-16 06:47:40,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:40,446 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:40,447 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:40,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:40,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:47:40,548 INFO L142 QuantifierPusher]: treesize reduction 19, result has 81.6 percent of original size [2021-04-16 06:47:40,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:47:40,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:40,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:40,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:40,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925136849] [2021-04-16 06:47:40,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:40,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:47:40,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405093871] [2021-04-16 06:47:40,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:47:40,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:40,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:47:40,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:40,654 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 9 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) [2021-04-16 06:47:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:41,021 INFO L93 Difference]: Finished difference Result 199 states and 259 transitions. [2021-04-16 06:47:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:47:41,021 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 9 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 51 [2021-04-16 06:47:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:41,022 INFO L225 Difference]: With dead ends: 199 [2021-04-16 06:47:41,022 INFO L226 Difference]: Without dead ends: 193 [2021-04-16 06:47:41,023 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 239.5ms TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:47:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-04-16 06:47:41,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 127. [2021-04-16 06:47:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 1.3114754098360655) internal successors, (160), 122 states have internal predecessors, (160), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 164 transitions. [2021-04-16 06:47:41,052 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 164 transitions. Word has length 51 [2021-04-16 06:47:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:41,052 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 164 transitions. [2021-04-16 06:47:41,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 9 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) [2021-04-16 06:47:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 164 transitions. [2021-04-16 06:47:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-04-16 06:47:41,053 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:41,053 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:41,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-04-16 06:47:41,053 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:41,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:41,054 INFO L82 PathProgramCache]: Analyzing trace with hash -364118747, now seen corresponding path program 1 times [2021-04-16 06:47:41,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:41,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783271081] [2021-04-16 06:47:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:41,059 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:41,060 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:41,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:41,215 INFO L142 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-04-16 06:47:41,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:41,223 INFO L142 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-04-16 06:47:41,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:41,225 INFO L142 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-04-16 06:47:41,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:41,227 INFO L142 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-04-16 06:47:41,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:41,228 INFO L142 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-04-16 06:47:41,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:41,236 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-04-16 06:47:41,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:41,248 INFO L142 QuantifierPusher]: treesize reduction 46, result has 82.4 percent of original size [2021-04-16 06:47:41,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-04-16 06:47:41,301 INFO L142 QuantifierPusher]: treesize reduction 92, result has 78.9 percent of original size [2021-04-16 06:47:41,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:47:41,403 INFO L142 QuantifierPusher]: treesize reduction 92, result has 79.1 percent of original size [2021-04-16 06:47:41,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:47:41,474 INFO L142 QuantifierPusher]: treesize reduction 42, result has 87.4 percent of original size [2021-04-16 06:47:41,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-04-16 06:47:41,583 INFO L142 QuantifierPusher]: treesize reduction 43, result has 50.6 percent of original size [2021-04-16 06:47:41,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:47:41,618 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:47:41,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:41,620 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:47:41,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:41,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:41,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:41,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783271081] [2021-04-16 06:47:41,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:41,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:47:41,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922123214] [2021-04-16 06:47:41,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:47:41,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:41,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:47:41,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:41,655 INFO L87 Difference]: Start difference. First operand 127 states and 164 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:42,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:42,095 INFO L93 Difference]: Finished difference Result 208 states and 270 transitions. [2021-04-16 06:47:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:42,096 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 51 [2021-04-16 06:47:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:42,097 INFO L225 Difference]: With dead ends: 208 [2021-04-16 06:47:42,097 INFO L226 Difference]: Without dead ends: 139 [2021-04-16 06:47:42,099 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 597.3ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:47:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-04-16 06:47:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2021-04-16 06:47:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.2900763358778626) internal successors, (169), 131 states have internal predecessors, (169), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 173 transitions. [2021-04-16 06:47:42,148 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 173 transitions. Word has length 51 [2021-04-16 06:47:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:42,148 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 173 transitions. [2021-04-16 06:47:42,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:42,148 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 173 transitions. [2021-04-16 06:47:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-04-16 06:47:42,149 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:42,149 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:42,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-04-16 06:47:42,151 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:42,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:42,151 INFO L82 PathProgramCache]: Analyzing trace with hash 247762981, now seen corresponding path program 1 times [2021-04-16 06:47:42,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:42,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884903414] [2021-04-16 06:47:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:42,157 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:42,158 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:42,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:42,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:42,267 INFO L142 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-04-16 06:47:42,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:42,275 INFO L142 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-04-16 06:47:42,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:42,276 INFO L142 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-04-16 06:47:42,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:42,277 INFO L142 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-04-16 06:47:42,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:42,278 INFO L142 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-04-16 06:47:42,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:47:42,279 INFO L142 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-04-16 06:47:42,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:42,289 INFO L142 QuantifierPusher]: treesize reduction 38, result has 85.0 percent of original size [2021-04-16 06:47:42,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-04-16 06:47:42,337 INFO L142 QuantifierPusher]: treesize reduction 84, result has 80.4 percent of original size [2021-04-16 06:47:42,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:47:42,419 INFO L142 QuantifierPusher]: treesize reduction 84, result has 80.6 percent of original size [2021-04-16 06:47:42,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:47:42,493 INFO L142 QuantifierPusher]: treesize reduction 56, result has 90.1 percent of original size [2021-04-16 06:47:42,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 511 [2021-04-16 06:47:42,641 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 55 [2021-04-16 06:47:42,643 INFO L142 QuantifierPusher]: treesize reduction 19, result has 17.4 percent of original size [2021-04-16 06:47:42,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:42,655 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-04-16 06:47:42,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:42,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:42,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:42,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:42,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:42,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884903414] [2021-04-16 06:47:42,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:42,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:47:42,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068409850] [2021-04-16 06:47:42,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:47:42,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:42,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:47:42,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:42,691 INFO L87 Difference]: Start difference. First operand 136 states and 173 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 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) [2021-04-16 06:47:43,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:43,145 INFO L93 Difference]: Finished difference Result 173 states and 219 transitions. [2021-04-16 06:47:43,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:43,145 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 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 51 [2021-04-16 06:47:43,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:43,146 INFO L225 Difference]: With dead ends: 173 [2021-04-16 06:47:43,146 INFO L226 Difference]: Without dead ends: 148 [2021-04-16 06:47:43,147 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 592.1ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:47:43,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-04-16 06:47:43,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2021-04-16 06:47:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.2714285714285714) internal successors, (178), 140 states have internal predecessors, (178), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 182 transitions. [2021-04-16 06:47:43,188 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 182 transitions. Word has length 51 [2021-04-16 06:47:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:43,188 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 182 transitions. [2021-04-16 06:47:43,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 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) [2021-04-16 06:47:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 182 transitions. [2021-04-16 06:47:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-04-16 06:47:43,189 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:43,189 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:43,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-04-16 06:47:43,189 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:43,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:43,190 INFO L82 PathProgramCache]: Analyzing trace with hash -732070043, now seen corresponding path program 1 times [2021-04-16 06:47:43,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:43,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799528539] [2021-04-16 06:47:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:43,197 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:43,199 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:43,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:43,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:43,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:43,307 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-04-16 06:47:43,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:47:43,331 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-04-16 06:47:43,331 INFO L147 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size 17 [2021-04-16 06:47:43,338 INFO L142 QuantifierPusher]: treesize reduction 65, result has 60.8 percent of original size [2021-04-16 06:47:43,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:47:43,384 INFO L142 QuantifierPusher]: treesize reduction 162, result has 64.9 percent of original size [2021-04-16 06:47:43,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 300 [2021-04-16 06:47:43,485 INFO L142 QuantifierPusher]: treesize reduction 77, result has 90.6 percent of original size [2021-04-16 06:47:43,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 742 [2021-04-16 06:47:43,694 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 40 [2021-04-16 06:47:43,702 INFO L142 QuantifierPusher]: treesize reduction 78, result has 91.2 percent of original size [2021-04-16 06:47:43,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 807 [2021-04-16 06:47:43,853 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 36 [2021-04-16 06:47:43,858 INFO L142 QuantifierPusher]: treesize reduction 61, result has 86.7 percent of original size [2021-04-16 06:47:43,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 398 [2021-04-16 06:47:43,933 INFO L142 QuantifierPusher]: treesize reduction 36, result has 49.3 percent of original size [2021-04-16 06:47:43,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:43,965 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:47:43,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:43,983 INFO L142 QuantifierPusher]: treesize reduction 23, result has 89.9 percent of original size [2021-04-16 06:47:43,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-04-16 06:47:44,069 INFO L142 QuantifierPusher]: treesize reduction 50, result has 86.9 percent of original size [2021-04-16 06:47:44,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 331 [2021-04-16 06:47:44,097 INFO L142 QuantifierPusher]: treesize reduction 70, result has 90.2 percent of original size [2021-04-16 06:47:44,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 641 [2021-04-16 06:47:44,269 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2021-04-16 06:47:44,275 INFO L142 QuantifierPusher]: treesize reduction 92, result has 85.7 percent of original size [2021-04-16 06:47:44,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 552 [2021-04-16 06:47:44,404 INFO L142 QuantifierPusher]: treesize reduction 88, result has 84.0 percent of original size [2021-04-16 06:47:44,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 463 [2021-04-16 06:47:44,413 INFO L142 QuantifierPusher]: treesize reduction 45, result has 80.7 percent of original size [2021-04-16 06:47:44,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-04-16 06:47:44,418 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:47:44,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:47:44,421 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:47:44,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:44,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:44,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:44,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:44,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:44,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:44,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799528539] [2021-04-16 06:47:44,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:44,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:47:44,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272855639] [2021-04-16 06:47:44,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:47:44,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:44,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:47:44,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:47:44,452 INFO L87 Difference]: Start difference. First operand 145 states and 182 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-04-16 06:47:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:45,251 INFO L93 Difference]: Finished difference Result 442 states and 568 transitions. [2021-04-16 06:47:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:47:45,252 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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 51 [2021-04-16 06:47:45,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:45,253 INFO L225 Difference]: With dead ends: 442 [2021-04-16 06:47:45,254 INFO L226 Difference]: Without dead ends: 346 [2021-04-16 06:47:45,254 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1372.0ms TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:47:45,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-04-16 06:47:45,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 226. [2021-04-16 06:47:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.2850678733031675) internal successors, (284), 221 states have internal predecessors, (284), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 288 transitions. [2021-04-16 06:47:45,310 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 288 transitions. Word has length 51 [2021-04-16 06:47:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:45,310 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 288 transitions. [2021-04-16 06:47:45,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-04-16 06:47:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 288 transitions. [2021-04-16 06:47:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-04-16 06:47:45,311 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:45,311 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:45,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-04-16 06:47:45,311 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash -810376151, now seen corresponding path program 2 times [2021-04-16 06:47:45,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:45,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419827611] [2021-04-16 06:47:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:45,320 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:45,321 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:45,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:45,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:45,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:45,508 INFO L142 QuantifierPusher]: treesize reduction 49, result has 70.7 percent of original size [2021-04-16 06:47:45,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-04-16 06:47:45,548 INFO L142 QuantifierPusher]: treesize reduction 167, result has 43.0 percent of original size [2021-04-16 06:47:45,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:47:45,560 INFO L142 QuantifierPusher]: treesize reduction 149, result has 68.4 percent of original size [2021-04-16 06:47:45,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-04-16 06:47:45,655 INFO L142 QuantifierPusher]: treesize reduction 176, result has 71.7 percent of original size [2021-04-16 06:47:45,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 445 [2021-04-16 06:47:45,760 INFO L142 QuantifierPusher]: treesize reduction 70, result has 89.8 percent of original size [2021-04-16 06:47:45,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 613 [2021-04-16 06:47:45,795 INFO L142 QuantifierPusher]: treesize reduction 69, result has 92.2 percent of original size [2021-04-16 06:47:45,801 INFO L147 QuantifierPusher]: treesize reduction 7, result has 99.1 percent of original size 807 [2021-04-16 06:47:45,997 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 44 [2021-04-16 06:47:46,006 INFO L142 QuantifierPusher]: treesize reduction 85, result has 90.7 percent of original size [2021-04-16 06:47:46,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 828 [2021-04-16 06:47:46,167 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 46 [2021-04-16 06:47:46,184 INFO L142 QuantifierPusher]: treesize reduction 86, result has 91.2 percent of original size [2021-04-16 06:47:46,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 895 [2021-04-16 06:47:46,359 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 43 [2021-04-16 06:47:46,368 INFO L142 QuantifierPusher]: treesize reduction 84, result has 89.6 percent of original size [2021-04-16 06:47:46,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 724 [2021-04-16 06:47:46,492 INFO L142 QuantifierPusher]: treesize reduction 61, result has 85.2 percent of original size [2021-04-16 06:47:46,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 352 [2021-04-16 06:47:46,565 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:47:46,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:46,583 INFO L142 QuantifierPusher]: treesize reduction 25, result has 89.1 percent of original size [2021-04-16 06:47:46,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-04-16 06:47:46,635 INFO L142 QuantifierPusher]: treesize reduction 52, result has 86.4 percent of original size [2021-04-16 06:47:46,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 331 [2021-04-16 06:47:46,664 INFO L142 QuantifierPusher]: treesize reduction 52, result has 86.5 percent of original size [2021-04-16 06:47:46,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-04-16 06:47:46,736 INFO L142 QuantifierPusher]: treesize reduction 120, result has 85.5 percent of original size [2021-04-16 06:47:46,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 708 [2021-04-16 06:47:46,915 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 53 [2021-04-16 06:47:46,919 INFO L142 QuantifierPusher]: treesize reduction 59, result has 82.3 percent of original size [2021-04-16 06:47:46,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-04-16 06:47:46,961 INFO L142 QuantifierPusher]: treesize reduction 61, result has 81.5 percent of original size [2021-04-16 06:47:46,966 INFO L147 QuantifierPusher]: treesize reduction 44, result has 83.6 percent of original size 225 [2021-04-16 06:47:46,969 INFO L142 QuantifierPusher]: treesize reduction 43, result has 86.2 percent of original size [2021-04-16 06:47:46,970 INFO L147 QuantifierPusher]: treesize reduction 44, result has 83.6 percent of original size 225 [2021-04-16 06:47:46,971 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:47:46,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:46,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:47,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419827611] [2021-04-16 06:47:47,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:47,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:47:47,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96586291] [2021-04-16 06:47:47,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:47:47,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:47,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:47:47,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:47:47,003 INFO L87 Difference]: Start difference. First operand 226 states and 288 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:48,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:48,147 INFO L93 Difference]: Finished difference Result 528 states and 674 transitions. [2021-04-16 06:47:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:47:48,148 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 2 states have call successors, (3), 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 51 [2021-04-16 06:47:48,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:48,150 INFO L225 Difference]: With dead ends: 528 [2021-04-16 06:47:48,150 INFO L226 Difference]: Without dead ends: 395 [2021-04-16 06:47:48,151 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1957.7ms TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:47:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-04-16 06:47:48,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 282. [2021-04-16 06:47:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 277 states have (on average 1.2743682310469313) internal successors, (353), 277 states have internal predecessors, (353), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 357 transitions. [2021-04-16 06:47:48,214 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 357 transitions. Word has length 51 [2021-04-16 06:47:48,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:48,214 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 357 transitions. [2021-04-16 06:47:48,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 357 transitions. [2021-04-16 06:47:48,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-04-16 06:47:48,215 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:48,215 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:48,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-04-16 06:47:48,216 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:48,216 INFO L82 PathProgramCache]: Analyzing trace with hash -4715419, now seen corresponding path program 1 times [2021-04-16 06:47:48,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:48,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723865606] [2021-04-16 06:47:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:48,221 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:48,222 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:48,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:48,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:48,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:48,326 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-04-16 06:47:48,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:47:48,349 INFO L142 QuantifierPusher]: treesize reduction 16, result has 51.5 percent of original size [2021-04-16 06:47:48,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:47:48,351 INFO L142 QuantifierPusher]: treesize reduction 65, result has 60.8 percent of original size [2021-04-16 06:47:48,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:47:48,394 INFO L142 QuantifierPusher]: treesize reduction 163, result has 67.4 percent of original size [2021-04-16 06:47:48,396 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.3 percent of original size 328 [2021-04-16 06:47:48,495 INFO L142 QuantifierPusher]: treesize reduction 95, result has 88.3 percent of original size [2021-04-16 06:47:48,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 717 [2021-04-16 06:47:48,633 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 40 [2021-04-16 06:47:48,638 INFO L142 QuantifierPusher]: treesize reduction 87, result has 90.1 percent of original size [2021-04-16 06:47:48,642 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.9 percent of original size 787 [2021-04-16 06:47:48,789 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 38 [2021-04-16 06:47:48,793 INFO L142 QuantifierPusher]: treesize reduction 59, result has 87.2 percent of original size [2021-04-16 06:47:48,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-04-16 06:47:48,886 INFO L142 QuantifierPusher]: treesize reduction 36, result has 50.0 percent of original size [2021-04-16 06:47:48,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:48,911 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-04-16 06:47:48,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:48,927 INFO L142 QuantifierPusher]: treesize reduction 23, result has 87.1 percent of original size [2021-04-16 06:47:48,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-04-16 06:47:48,971 INFO L142 QuantifierPusher]: treesize reduction 41, result has 88.9 percent of original size [2021-04-16 06:47:48,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-04-16 06:47:48,991 INFO L142 QuantifierPusher]: treesize reduction 49, result has 92.1 percent of original size [2021-04-16 06:47:48,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 570 [2021-04-16 06:47:49,071 INFO L142 QuantifierPusher]: treesize reduction 92, result has 85.3 percent of original size [2021-04-16 06:47:49,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 535 [2021-04-16 06:47:49,147 INFO L142 QuantifierPusher]: treesize reduction 136, result has 78.2 percent of original size [2021-04-16 06:47:49,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 487 [2021-04-16 06:47:49,152 INFO L142 QuantifierPusher]: treesize reduction 83, result has 73.0 percent of original size [2021-04-16 06:47:49,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-04-16 06:47:49,155 INFO L142 QuantifierPusher]: treesize reduction 75, result has 74.7 percent of original size [2021-04-16 06:47:49,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-04-16 06:47:49,157 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:47:49,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:49,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:49,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:49,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723865606] [2021-04-16 06:47:49,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:49,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:47:49,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355238509] [2021-04-16 06:47:49,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:47:49,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:49,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:47:49,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:47:49,187 INFO L87 Difference]: Start difference. First operand 282 states and 357 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-04-16 06:47:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:49,859 INFO L93 Difference]: Finished difference Result 505 states and 638 transitions. [2021-04-16 06:47:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:47:49,860 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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 51 [2021-04-16 06:47:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:49,862 INFO L225 Difference]: With dead ends: 505 [2021-04-16 06:47:49,862 INFO L226 Difference]: Without dead ends: 418 [2021-04-16 06:47:49,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1025.5ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:47:49,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-04-16 06:47:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 304. [2021-04-16 06:47:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 299 states have (on average 1.2441471571906355) internal successors, (372), 299 states have internal predecessors, (372), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 376 transitions. [2021-04-16 06:47:49,956 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 376 transitions. Word has length 51 [2021-04-16 06:47:49,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:49,956 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 376 transitions. [2021-04-16 06:47:49,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-04-16 06:47:49,956 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 376 transitions. [2021-04-16 06:47:49,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-04-16 06:47:49,958 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:49,958 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:49,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-04-16 06:47:49,958 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:49,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:49,958 INFO L82 PathProgramCache]: Analyzing trace with hash -198494423, now seen corresponding path program 2 times [2021-04-16 06:47:49,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:49,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820467867] [2021-04-16 06:47:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:49,971 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:49,974 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:50,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:50,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:50,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:50,108 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-04-16 06:47:50,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:47:50,134 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-04-16 06:47:50,135 INFO L147 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size 17 [2021-04-16 06:47:50,141 INFO L142 QuantifierPusher]: treesize reduction 56, result has 65.9 percent of original size [2021-04-16 06:47:50,142 INFO L147 QuantifierPusher]: treesize reduction 7, result has 93.5 percent of original size 101 [2021-04-16 06:47:50,188 INFO L142 QuantifierPusher]: treesize reduction 154, result has 46.2 percent of original size [2021-04-16 06:47:50,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-04-16 06:47:50,235 INFO L142 QuantifierPusher]: treesize reduction 48, result has 86.2 percent of original size [2021-04-16 06:47:50,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 300 [2021-04-16 06:47:50,254 INFO L142 QuantifierPusher]: treesize reduction 51, result has 90.4 percent of original size [2021-04-16 06:47:50,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 481 [2021-04-16 06:47:50,376 INFO L142 QuantifierPusher]: treesize reduction 60, result has 89.3 percent of original size [2021-04-16 06:47:50,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 502 [2021-04-16 06:47:50,502 INFO L142 QuantifierPusher]: treesize reduction 61, result has 90.4 percent of original size [2021-04-16 06:47:50,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 572 [2021-04-16 06:47:50,630 INFO L142 QuantifierPusher]: treesize reduction 59, result has 87.2 percent of original size [2021-04-16 06:47:50,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-04-16 06:47:50,709 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.1 percent of original size [2021-04-16 06:47:50,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:47:50,737 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-04-16 06:47:50,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:50,757 INFO L142 QuantifierPusher]: treesize reduction 25, result has 89.2 percent of original size [2021-04-16 06:47:50,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-04-16 06:47:50,821 INFO L142 QuantifierPusher]: treesize reduction 52, result has 86.5 percent of original size [2021-04-16 06:47:50,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-04-16 06:47:50,854 INFO L142 QuantifierPusher]: treesize reduction 52, result has 86.6 percent of original size [2021-04-16 06:47:50,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-04-16 06:47:50,942 INFO L142 QuantifierPusher]: treesize reduction 57, result has 90.5 percent of original size [2021-04-16 06:47:50,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 541 [2021-04-16 06:47:51,089 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 52 [2021-04-16 06:47:51,092 INFO L142 QuantifierPusher]: treesize reduction 59, result has 82.3 percent of original size [2021-04-16 06:47:51,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-04-16 06:47:51,141 INFO L142 QuantifierPusher]: treesize reduction 61, result has 81.5 percent of original size [2021-04-16 06:47:51,142 INFO L147 QuantifierPusher]: treesize reduction 44, result has 83.6 percent of original size 225 [2021-04-16 06:47:51,152 INFO L142 QuantifierPusher]: treesize reduction 43, result has 86.2 percent of original size [2021-04-16 06:47:51,154 INFO L147 QuantifierPusher]: treesize reduction 44, result has 83.6 percent of original size 225 [2021-04-16 06:47:51,156 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:47:51,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:51,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:51,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:51,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820467867] [2021-04-16 06:47:51,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:51,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:47:51,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748873083] [2021-04-16 06:47:51,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:47:51,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:51,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:47:51,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:47:51,187 INFO L87 Difference]: Start difference. First operand 304 states and 376 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:52,085 INFO L93 Difference]: Finished difference Result 539 states and 669 transitions. [2021-04-16 06:47:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:47:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 2 states have call successors, (3), 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 51 [2021-04-16 06:47:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:52,088 INFO L225 Difference]: With dead ends: 539 [2021-04-16 06:47:52,088 INFO L226 Difference]: Without dead ends: 363 [2021-04-16 06:47:52,089 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1473.1ms TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:47:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-04-16 06:47:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 273. [2021-04-16 06:47:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 268 states have (on average 1.2238805970149254) internal successors, (328), 268 states have internal predecessors, (328), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 332 transitions. [2021-04-16 06:47:52,160 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 332 transitions. Word has length 51 [2021-04-16 06:47:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:52,160 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 332 transitions. [2021-04-16 06:47:52,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 332 transitions. [2021-04-16 06:47:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-16 06:47:52,162 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:52,162 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:52,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-04-16 06:47:52,162 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:52,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:52,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1931900780, now seen corresponding path program 1 times [2021-04-16 06:47:52,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:52,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214920854] [2021-04-16 06:47:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:52,168 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:52,169 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:52,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:52,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:52,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:52,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:52,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:52,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:52,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:52,257 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 06:47:52,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:52,279 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-04-16 06:47:52,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:52,281 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:47:52,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:52,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:52,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:52,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214920854] [2021-04-16 06:47:52,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:52,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:47:52,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709149430] [2021-04-16 06:47:52,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:47:52,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:52,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:47:52,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:52,335 INFO L87 Difference]: Start difference. First operand 273 states and 332 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:52,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:52,866 INFO L93 Difference]: Finished difference Result 940 states and 1194 transitions. [2021-04-16 06:47:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:47:52,866 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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 52 [2021-04-16 06:47:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:52,869 INFO L225 Difference]: With dead ends: 940 [2021-04-16 06:47:52,869 INFO L226 Difference]: Without dead ends: 911 [2021-04-16 06:47:52,870 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:52,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-04-16 06:47:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 275. [2021-04-16 06:47:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 270 states have (on average 1.2259259259259259) internal successors, (331), 270 states have internal predecessors, (331), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 335 transitions. [2021-04-16 06:47:52,937 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 335 transitions. Word has length 52 [2021-04-16 06:47:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:52,938 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 335 transitions. [2021-04-16 06:47:52,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 335 transitions. [2021-04-16 06:47:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-04-16 06:47:52,939 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:52,939 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:52,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-04-16 06:47:52,939 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:52,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:52,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1617347862, now seen corresponding path program 3 times [2021-04-16 06:47:52,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:52,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581843664] [2021-04-16 06:47:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:52,944 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:52,945 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:52,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:52,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:52,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:52,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:52,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:52,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:53,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:53,013 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-04-16 06:47:53,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:47:53,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:53,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:53,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581843664] [2021-04-16 06:47:53,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:53,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:47:53,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719802019] [2021-04-16 06:47:53,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:47:53,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:53,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:47:53,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:53,057 INFO L87 Difference]: Start difference. First operand 275 states and 335 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:53,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:53,464 INFO L93 Difference]: Finished difference Result 659 states and 830 transitions. [2021-04-16 06:47:53,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:53,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 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 53 [2021-04-16 06:47:53,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:53,467 INFO L225 Difference]: With dead ends: 659 [2021-04-16 06:47:53,467 INFO L226 Difference]: Without dead ends: 595 [2021-04-16 06:47:53,469 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 89.9ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-04-16 06:47:53,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 303. [2021-04-16 06:47:53,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 298 states have (on average 1.2348993288590604) internal successors, (368), 298 states have internal predecessors, (368), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 372 transitions. [2021-04-16 06:47:53,558 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 372 transitions. Word has length 53 [2021-04-16 06:47:53,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:53,558 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 372 transitions. [2021-04-16 06:47:53,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:53,558 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 372 transitions. [2021-04-16 06:47:53,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-04-16 06:47:53,559 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:53,559 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1, 1, 1, 1] [2021-04-16 06:47:53,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-04-16 06:47:53,559 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:53,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2072849753, now seen corresponding path program 1 times [2021-04-16 06:47:53,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:53,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435121122] [2021-04-16 06:47:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:53,565 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:53,567 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:53,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:53,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:53,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,602 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 06:47:53,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:53,617 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-04-16 06:47:53,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:53,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:53,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:53,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:53,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435121122] [2021-04-16 06:47:53,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:53,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:47:53,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583397930] [2021-04-16 06:47:53,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:47:53,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:53,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:47:53,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:47:53,639 INFO L87 Difference]: Start difference. First operand 303 states and 372 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:53,819 INFO L93 Difference]: Finished difference Result 530 states and 651 transitions. [2021-04-16 06:47:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 06:47:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 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 54 [2021-04-16 06:47:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:53,821 INFO L225 Difference]: With dead ends: 530 [2021-04-16 06:47:53,821 INFO L226 Difference]: Without dead ends: 297 [2021-04-16 06:47:53,822 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:47:53,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-04-16 06:47:53,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 271. [2021-04-16 06:47:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 266 states have (on average 1.1578947368421053) internal successors, (308), 266 states have internal predecessors, (308), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 312 transitions. [2021-04-16 06:47:53,904 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 312 transitions. Word has length 54 [2021-04-16 06:47:53,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:53,904 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 312 transitions. [2021-04-16 06:47:53,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 312 transitions. [2021-04-16 06:47:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-04-16 06:47:53,905 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:53,906 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:53,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-04-16 06:47:53,906 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:53,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:53,906 INFO L82 PathProgramCache]: Analyzing trace with hash 258092167, now seen corresponding path program 2 times [2021-04-16 06:47:53,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:53,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367254825] [2021-04-16 06:47:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:53,911 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:53,912 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:53,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:53,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:53,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:54,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:54,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:54,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:54,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:54,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:54,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:54,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:54,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:54,063 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:47:54,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:54,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:54,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:54,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:54,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:54,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:54,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367254825] [2021-04-16 06:47:54,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:54,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:47:54,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202704574] [2021-04-16 06:47:54,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:47:54,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:54,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:47:54,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:54,132 INFO L87 Difference]: Start difference. First operand 271 states and 312 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:55,005 INFO L93 Difference]: Finished difference Result 1204 states and 1442 transitions. [2021-04-16 06:47:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:47:55,005 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (3), 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 54 [2021-04-16 06:47:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:55,010 INFO L225 Difference]: With dead ends: 1204 [2021-04-16 06:47:55,010 INFO L226 Difference]: Without dead ends: 1175 [2021-04-16 06:47:55,011 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 158.0ms TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:47:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2021-04-16 06:47:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 275. [2021-04-16 06:47:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 270 states have (on average 1.162962962962963) internal successors, (314), 270 states have internal predecessors, (314), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 318 transitions. [2021-04-16 06:47:55,106 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 318 transitions. Word has length 54 [2021-04-16 06:47:55,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:55,106 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 318 transitions. [2021-04-16 06:47:55,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:55,106 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 318 transitions. [2021-04-16 06:47:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-04-16 06:47:55,107 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:55,107 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 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, 1, 1, 1] [2021-04-16 06:47:55,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-04-16 06:47:55,107 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:55,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:55,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1965807313, now seen corresponding path program 4 times [2021-04-16 06:47:55,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:55,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669213614] [2021-04-16 06:47:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:55,113 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:55,114 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:55,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:55,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:55,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:55,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:55,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:55,179 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-04-16 06:47:55,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:47:55,205 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size [2021-04-16 06:47:55,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:47:55,216 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:47:55,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:47:55,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:55,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:55,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669213614] [2021-04-16 06:47:55,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:55,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:47:55,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814610751] [2021-04-16 06:47:55,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:47:55,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:55,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:47:55,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:55,269 INFO L87 Difference]: Start difference. First operand 275 states and 318 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:55,861 INFO L93 Difference]: Finished difference Result 750 states and 889 transitions. [2021-04-16 06:47:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:47:55,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 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 55 [2021-04-16 06:47:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:55,865 INFO L225 Difference]: With dead ends: 750 [2021-04-16 06:47:55,865 INFO L226 Difference]: Without dead ends: 705 [2021-04-16 06:47:55,867 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.7ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:47:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-04-16 06:47:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 275. [2021-04-16 06:47:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 270 states have (on average 1.162962962962963) internal successors, (314), 270 states have internal predecessors, (314), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 318 transitions. [2021-04-16 06:47:55,956 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 318 transitions. Word has length 55 [2021-04-16 06:47:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:55,956 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 318 transitions. [2021-04-16 06:47:55,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 318 transitions. [2021-04-16 06:47:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-04-16 06:47:55,962 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:55,962 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 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, 1, 1, 1] [2021-04-16 06:47:55,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-04-16 06:47:55,963 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:55,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:55,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1827890636, now seen corresponding path program 5 times [2021-04-16 06:47:55,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:55,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005415306] [2021-04-16 06:47:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:55,969 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:55,971 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:56,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:56,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:56,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:56,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:56,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:56,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:56,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:56,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:56,085 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:47:56,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:47:56,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:56,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:56,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:56,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005415306] [2021-04-16 06:47:56,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:56,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:47:56,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259128894] [2021-04-16 06:47:56,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:47:56,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:56,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:47:56,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:56,152 INFO L87 Difference]: Start difference. First operand 275 states and 318 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:56,880 INFO L93 Difference]: Finished difference Result 873 states and 1037 transitions. [2021-04-16 06:47:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:47:56,882 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (3), 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 57 [2021-04-16 06:47:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:56,886 INFO L225 Difference]: With dead ends: 873 [2021-04-16 06:47:56,886 INFO L226 Difference]: Without dead ends: 828 [2021-04-16 06:47:56,886 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 145.2ms TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:56,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-04-16 06:47:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 275. [2021-04-16 06:47:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 270 states have (on average 1.162962962962963) internal successors, (314), 270 states have internal predecessors, (314), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 318 transitions. [2021-04-16 06:47:56,982 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 318 transitions. Word has length 57 [2021-04-16 06:47:56,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:56,983 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 318 transitions. [2021-04-16 06:47:56,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 318 transitions. [2021-04-16 06:47:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-04-16 06:47:56,984 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:56,984 INFO L519 BasicCegarLoop]: trace histogram [10, 9, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:56,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-04-16 06:47:56,985 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:56,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:56,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1973766531, now seen corresponding path program 3 times [2021-04-16 06:47:56,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:56,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149085073] [2021-04-16 06:47:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:56,993 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:56,994 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:57,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:57,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:57,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:57,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:57,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:57,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:57,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:57,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:57,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:57,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:57,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:57,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:57,146 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:47:57,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:57,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:57,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:57,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:57,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149085073] [2021-04-16 06:47:57,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:57,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:47:57,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594007648] [2021-04-16 06:47:57,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:47:57,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:57,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:47:57,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:47:57,218 INFO L87 Difference]: Start difference. First operand 275 states and 318 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:58,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:58,479 INFO L93 Difference]: Finished difference Result 1454 states and 1744 transitions. [2021-04-16 06:47:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:47:58,480 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-04-16 06:47:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:58,485 INFO L225 Difference]: With dead ends: 1454 [2021-04-16 06:47:58,485 INFO L226 Difference]: Without dead ends: 1425 [2021-04-16 06:47:58,487 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 188.3ms TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:47:58,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-04-16 06:47:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 279. [2021-04-16 06:47:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 274 states have (on average 1.167883211678832) internal successors, (320), 274 states have internal predecessors, (320), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:58,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 324 transitions. [2021-04-16 06:47:58,591 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 324 transitions. Word has length 58 [2021-04-16 06:47:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:58,591 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 324 transitions. [2021-04-16 06:47:58,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 324 transitions. [2021-04-16 06:47:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-04-16 06:47:58,592 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:58,592 INFO L519 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 2, 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, 1, 1, 1] [2021-04-16 06:47:58,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-04-16 06:47:58,592 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:58,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1861017081, now seen corresponding path program 6 times [2021-04-16 06:47:58,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:58,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980550451] [2021-04-16 06:47:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:58,597 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:58,598 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:58,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:58,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:58,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:58,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:58,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:58,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:58,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:58,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:58,712 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-04-16 06:47:58,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:47:58,726 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:47:58,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:47:58,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:58,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:58,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980550451] [2021-04-16 06:47:58,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:58,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:47:58,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674606657] [2021-04-16 06:47:58,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:47:58,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:58,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:47:58,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:58,794 INFO L87 Difference]: Start difference. First operand 279 states and 324 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:59,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:59,729 INFO L93 Difference]: Finished difference Result 1000 states and 1191 transitions. [2021-04-16 06:47:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:47:59,730 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 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 59 [2021-04-16 06:47:59,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:59,733 INFO L225 Difference]: With dead ends: 1000 [2021-04-16 06:47:59,733 INFO L226 Difference]: Without dead ends: 955 [2021-04-16 06:47:59,735 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 177.7ms TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:47:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-04-16 06:47:59,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 279. [2021-04-16 06:47:59,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 274 states have (on average 1.167883211678832) internal successors, (320), 274 states have internal predecessors, (320), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 324 transitions. [2021-04-16 06:47:59,844 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 324 transitions. Word has length 59 [2021-04-16 06:47:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:59,844 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 324 transitions. [2021-04-16 06:47:59,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 324 transitions. [2021-04-16 06:47:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-04-16 06:47:59,845 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:59,846 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:59,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-04-16 06:47:59,846 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:59,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1813405083, now seen corresponding path program 2 times [2021-04-16 06:47:59,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:59,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574042973] [2021-04-16 06:47:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:59,851 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:59,852 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:59,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:59,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:59,892 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:59,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:59,911 INFO L142 QuantifierPusher]: treesize reduction 7, result has 73.1 percent of original size [2021-04-16 06:47:59,912 INFO L147 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size 11 [2021-04-16 06:47:59,916 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.9 percent of original size [2021-04-16 06:47:59,916 INFO L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-04-16 06:47:59,931 INFO L142 QuantifierPusher]: treesize reduction 16, result has 62.8 percent of original size [2021-04-16 06:47:59,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:59,955 INFO L142 QuantifierPusher]: treesize reduction 15, result has 66.7 percent of original size [2021-04-16 06:47:59,956 INFO L147 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size 22 [2021-04-16 06:47:59,957 INFO L142 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-04-16 06:47:59,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:59,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:59,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:59,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:59,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574042973] [2021-04-16 06:47:59,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:59,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:47:59,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484806556] [2021-04-16 06:47:59,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:47:59,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:59,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:47:59,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:59,982 INFO L87 Difference]: Start difference. First operand 279 states and 324 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:00,235 INFO L93 Difference]: Finished difference Result 378 states and 438 transitions. [2021-04-16 06:48:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:48:00,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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 60 [2021-04-16 06:48:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:00,237 INFO L225 Difference]: With dead ends: 378 [2021-04-16 06:48:00,237 INFO L226 Difference]: Without dead ends: 258 [2021-04-16 06:48:00,237 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 89.7ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:48:00,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-04-16 06:48:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 212. [2021-04-16 06:48:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.1884057971014492) internal successors, (246), 207 states have internal predecessors, (246), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 250 transitions. [2021-04-16 06:48:00,324 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 250 transitions. Word has length 60 [2021-04-16 06:48:00,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:00,324 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 250 transitions. [2021-04-16 06:48:00,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:00,324 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 250 transitions. [2021-04-16 06:48:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-04-16 06:48:00,327 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:00,327 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:00,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-04-16 06:48:00,328 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:00,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1971018387, now seen corresponding path program 3 times [2021-04-16 06:48:00,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:00,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634782201] [2021-04-16 06:48:00,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:00,333 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:00,335 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:00,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:00,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:00,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:00,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:00,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:00,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:00,419 INFO L142 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-04-16 06:48:00,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-04-16 06:48:00,468 INFO L142 QuantifierPusher]: treesize reduction 24, result has 83.8 percent of original size [2021-04-16 06:48:00,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-04-16 06:48:00,522 INFO L142 QuantifierPusher]: treesize reduction 24, result has 83.8 percent of original size [2021-04-16 06:48:00,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-04-16 06:48:00,576 INFO L142 QuantifierPusher]: treesize reduction 29, result has 79.9 percent of original size [2021-04-16 06:48:00,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-04-16 06:48:00,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-04-16 06:48:00,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:00,634 INFO L142 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-04-16 06:48:00,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:48:00,649 INFO L142 QuantifierPusher]: treesize reduction 27, result has 86.6 percent of original size [2021-04-16 06:48:00,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-04-16 06:48:00,706 INFO L142 QuantifierPusher]: treesize reduction 44, result has 52.2 percent of original size [2021-04-16 06:48:00,706 INFO L147 QuantifierPusher]: treesize reduction 8, result has 83.3 percent of original size 40 [2021-04-16 06:48:00,727 INFO L142 QuantifierPusher]: treesize reduction 44, result has 50.6 percent of original size [2021-04-16 06:48:00,728 INFO L147 QuantifierPusher]: treesize reduction 8, result has 82.2 percent of original size 37 [2021-04-16 06:48:00,729 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:00,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:00,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:00,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:00,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:00,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:00,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:00,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634782201] [2021-04-16 06:48:00,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:00,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:48:00,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210491978] [2021-04-16 06:48:00,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:48:00,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:00,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:48:00,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:48:00,759 INFO L87 Difference]: Start difference. First operand 212 states and 250 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:01,165 INFO L93 Difference]: Finished difference Result 248 states and 290 transitions. [2021-04-16 06:48:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:48:01,166 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-04-16 06:48:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:01,167 INFO L225 Difference]: With dead ends: 248 [2021-04-16 06:48:01,167 INFO L226 Difference]: Without dead ends: 172 [2021-04-16 06:48:01,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 466.5ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:48:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-04-16 06:48:01,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-04-16 06:48:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.215568862275449) internal successors, (203), 167 states have internal predecessors, (203), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 207 transitions. [2021-04-16 06:48:01,239 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 207 transitions. Word has length 61 [2021-04-16 06:48:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:01,240 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 207 transitions. [2021-04-16 06:48:01,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 207 transitions. [2021-04-16 06:48:01,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-04-16 06:48:01,240 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:01,241 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 2, 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, 1, 1, 1] [2021-04-16 06:48:01,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-04-16 06:48:01,241 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:01,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:01,241 INFO L82 PathProgramCache]: Analyzing trace with hash -741653378, now seen corresponding path program 7 times [2021-04-16 06:48:01,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:01,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235973530] [2021-04-16 06:48:01,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:01,246 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:01,247 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:01,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:01,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:01,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:01,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:01,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:01,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:01,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:01,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:01,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:01,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:01,369 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:48:01,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:01,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:01,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:01,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:01,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235973530] [2021-04-16 06:48:01,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:01,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:48:01,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52235123] [2021-04-16 06:48:01,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:48:01,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:01,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:48:01,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:48:01,438 INFO L87 Difference]: Start difference. First operand 172 states and 207 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:02,370 INFO L93 Difference]: Finished difference Result 976 states and 1174 transitions. [2021-04-16 06:48:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:48:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-04-16 06:48:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:02,375 INFO L225 Difference]: With dead ends: 976 [2021-04-16 06:48:02,375 INFO L226 Difference]: Without dead ends: 931 [2021-04-16 06:48:02,375 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 161.2ms TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:48:02,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-04-16 06:48:02,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 172. [2021-04-16 06:48:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.215568862275449) internal successors, (203), 167 states have internal predecessors, (203), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 207 transitions. [2021-04-16 06:48:02,450 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 207 transitions. Word has length 61 [2021-04-16 06:48:02,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:02,450 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 207 transitions. [2021-04-16 06:48:02,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:02,450 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 207 transitions. [2021-04-16 06:48:02,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-04-16 06:48:02,451 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:02,451 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:02,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-04-16 06:48:02,451 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:02,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:02,451 INFO L82 PathProgramCache]: Analyzing trace with hash -891810688, now seen corresponding path program 4 times [2021-04-16 06:48:02,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:02,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134246854] [2021-04-16 06:48:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:02,458 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:02,459 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:02,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:02,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:02,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:02,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:02,603 INFO L142 QuantifierPusher]: treesize reduction 4, result has 96.3 percent of original size [2021-04-16 06:48:02,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-04-16 06:48:02,629 INFO L142 QuantifierPusher]: treesize reduction 34, result has 90.5 percent of original size [2021-04-16 06:48:02,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 323 [2021-04-16 06:48:02,681 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-16 06:48:02,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:48:02,693 INFO L142 QuantifierPusher]: treesize reduction 17, result has 92.1 percent of original size [2021-04-16 06:48:02,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-04-16 06:48:02,741 INFO L142 QuantifierPusher]: treesize reduction 103, result has 78.0 percent of original size [2021-04-16 06:48:02,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 366 [2021-04-16 06:48:02,842 INFO L142 QuantifierPusher]: treesize reduction 96, result has 86.1 percent of original size [2021-04-16 06:48:02,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 593 [2021-04-16 06:48:02,956 INFO L142 QuantifierPusher]: treesize reduction 96, result has 86.0 percent of original size [2021-04-16 06:48:02,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 590 [2021-04-16 06:48:03,061 INFO L142 QuantifierPusher]: treesize reduction 51, result has 84.7 percent of original size [2021-04-16 06:48:03,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 282 [2021-04-16 06:48:03,118 INFO L142 QuantifierPusher]: treesize reduction 31, result has 84.3 percent of original size [2021-04-16 06:48:03,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-04-16 06:48:03,187 INFO L142 QuantifierPusher]: treesize reduction 50, result has 89.1 percent of original size [2021-04-16 06:48:03,189 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.8 percent of original size 399 [2021-04-16 06:48:03,340 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 39 [2021-04-16 06:48:03,359 INFO L142 QuantifierPusher]: treesize reduction 81, result has 83.9 percent of original size [2021-04-16 06:48:03,361 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.9 percent of original size 412 [2021-04-16 06:48:03,476 INFO L142 QuantifierPusher]: treesize reduction 81, result has 83.8 percent of original size [2021-04-16 06:48:03,486 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.8 percent of original size 409 [2021-04-16 06:48:03,636 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 33 [2021-04-16 06:48:03,639 INFO L142 QuantifierPusher]: treesize reduction 38, result has 79.0 percent of original size [2021-04-16 06:48:03,640 INFO L147 QuantifierPusher]: treesize reduction 9, result has 93.7 percent of original size 134 [2021-04-16 06:48:03,722 INFO L142 QuantifierPusher]: treesize reduction 17, result has 46.9 percent of original size [2021-04-16 06:48:03,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:48:03,747 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:48:03,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:03,773 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-16 06:48:03,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:48:03,791 INFO L142 QuantifierPusher]: treesize reduction 27, result has 87.0 percent of original size [2021-04-16 06:48:03,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-04-16 06:48:03,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:03,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:03,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:03,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134246854] [2021-04-16 06:48:03,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:03,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:48:03,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722621907] [2021-04-16 06:48:03,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:48:03,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:03,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:48:03,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:48:03,901 INFO L87 Difference]: Start difference. First operand 172 states and 207 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 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) [2021-04-16 06:48:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:05,131 INFO L93 Difference]: Finished difference Result 453 states and 538 transitions. [2021-04-16 06:48:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:48:05,132 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 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 62 [2021-04-16 06:48:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:05,133 INFO L225 Difference]: With dead ends: 453 [2021-04-16 06:48:05,133 INFO L226 Difference]: Without dead ends: 448 [2021-04-16 06:48:05,134 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1665.2ms TimeCoverageRelationStatistics Valid=228, Invalid=1254, Unknown=0, NotChecked=0, Total=1482 [2021-04-16 06:48:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-04-16 06:48:05,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 244. [2021-04-16 06:48:05,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.209205020920502) internal successors, (289), 239 states have internal predecessors, (289), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 293 transitions. [2021-04-16 06:48:05,256 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 293 transitions. Word has length 62 [2021-04-16 06:48:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:05,256 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 293 transitions. [2021-04-16 06:48:05,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 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) [2021-04-16 06:48:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 293 transitions. [2021-04-16 06:48:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-04-16 06:48:05,257 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:05,257 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:05,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-04-16 06:48:05,257 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:05,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:05,258 INFO L82 PathProgramCache]: Analyzing trace with hash -970116796, now seen corresponding path program 5 times [2021-04-16 06:48:05,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:05,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244532889] [2021-04-16 06:48:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:05,262 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:05,264 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:05,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:05,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:05,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:05,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:05,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:05,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:05,334 INFO L142 QuantifierPusher]: treesize reduction 15, result has 91.0 percent of original size [2021-04-16 06:48:05,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-04-16 06:48:05,373 INFO L142 QuantifierPusher]: treesize reduction 22, result has 85.5 percent of original size [2021-04-16 06:48:05,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-04-16 06:48:05,422 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:48:05,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:05,433 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-16 06:48:05,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:48:05,451 INFO L142 QuantifierPusher]: treesize reduction 13, result has 93.0 percent of original size [2021-04-16 06:48:05,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-04-16 06:48:05,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:05,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:05,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:05,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:05,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:05,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:05,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244532889] [2021-04-16 06:48:05,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:05,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:48:05,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908242091] [2021-04-16 06:48:05,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:48:05,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:05,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:48:05,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:48:05,552 INFO L87 Difference]: Start difference. First operand 244 states and 293 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:06,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:06,030 INFO L93 Difference]: Finished difference Result 389 states and 463 transitions. [2021-04-16 06:48:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:48:06,031 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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 62 [2021-04-16 06:48:06,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:06,032 INFO L225 Difference]: With dead ends: 389 [2021-04-16 06:48:06,032 INFO L226 Difference]: Without dead ends: 384 [2021-04-16 06:48:06,034 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 257.0ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:48:06,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-04-16 06:48:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 215. [2021-04-16 06:48:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 210 states have (on average 1.2095238095238094) internal successors, (254), 210 states have internal predecessors, (254), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 258 transitions. [2021-04-16 06:48:06,159 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 258 transitions. Word has length 62 [2021-04-16 06:48:06,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:06,160 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 258 transitions. [2021-04-16 06:48:06,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 258 transitions. [2021-04-16 06:48:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:48:06,161 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:06,161 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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, 1, 1] [2021-04-16 06:48:06,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-04-16 06:48:06,161 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:06,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:06,162 INFO L82 PathProgramCache]: Analyzing trace with hash 930201970, now seen corresponding path program 6 times [2021-04-16 06:48:06,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:06,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014567137] [2021-04-16 06:48:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:06,166 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:06,168 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:06,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:06,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:06,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:06,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:06,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:06,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:06,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:06,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:48:06,322 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-04-16 06:48:06,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:48:06,345 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-04-16 06:48:06,346 INFO L147 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size 17 [2021-04-16 06:48:06,352 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size [2021-04-16 06:48:06,353 INFO L147 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-04-16 06:48:06,378 INFO L142 QuantifierPusher]: treesize reduction 10, result has 94.3 percent of original size [2021-04-16 06:48:06,379 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.8 percent of original size 159 [2021-04-16 06:48:06,468 INFO L142 QuantifierPusher]: treesize reduction 30, result has 89.1 percent of original size [2021-04-16 06:48:06,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 244 [2021-04-16 06:48:06,541 INFO L142 QuantifierPusher]: treesize reduction 56, result has 89.6 percent of original size [2021-04-16 06:48:06,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 482 [2021-04-16 06:48:06,661 INFO L142 QuantifierPusher]: treesize reduction 57, result has 90.6 percent of original size [2021-04-16 06:48:06,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 549 [2021-04-16 06:48:06,770 INFO L142 QuantifierPusher]: treesize reduction 29, result has 83.7 percent of original size [2021-04-16 06:48:06,771 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.3 percent of original size 142 [2021-04-16 06:48:06,830 INFO L142 QuantifierPusher]: treesize reduction 27, result has 56.5 percent of original size [2021-04-16 06:48:06,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:06,854 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:48:06,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:06,869 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 06:48:06,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:06,888 INFO L142 QuantifierPusher]: treesize reduction 21, result has 89.7 percent of original size [2021-04-16 06:48:06,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-04-16 06:48:06,967 INFO L142 QuantifierPusher]: treesize reduction 46, result has 67.8 percent of original size [2021-04-16 06:48:06,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:06,993 INFO L142 QuantifierPusher]: treesize reduction 47, result has 88.0 percent of original size [2021-04-16 06:48:06,995 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.4 percent of original size 336 [2021-04-16 06:48:07,123 INFO L142 QuantifierPusher]: treesize reduction 59, result has 82.3 percent of original size [2021-04-16 06:48:07,125 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.7 percent of original size 266 [2021-04-16 06:48:07,199 INFO L142 QuantifierPusher]: treesize reduction 59, result has 82.2 percent of original size [2021-04-16 06:48:07,201 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.7 percent of original size 263 [2021-04-16 06:48:07,204 INFO L142 QuantifierPusher]: treesize reduction 38, result has 55.3 percent of original size [2021-04-16 06:48:07,204 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.9 percent of original size 38 [2021-04-16 06:48:07,206 INFO L142 QuantifierPusher]: treesize reduction 30, result has 59.5 percent of original size [2021-04-16 06:48:07,207 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-04-16 06:48:07,209 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:07,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:07,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:07,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:07,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:07,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:07,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014567137] [2021-04-16 06:48:07,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:07,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:48:07,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288394918] [2021-04-16 06:48:07,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:48:07,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:07,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:48:07,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:48:07,250 INFO L87 Difference]: Start difference. First operand 215 states and 258 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 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) [2021-04-16 06:48:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:08,346 INFO L93 Difference]: Finished difference Result 664 states and 789 transitions. [2021-04-16 06:48:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:48:08,348 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 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 72 [2021-04-16 06:48:08,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:08,350 INFO L225 Difference]: With dead ends: 664 [2021-04-16 06:48:08,350 INFO L226 Difference]: Without dead ends: 610 [2021-04-16 06:48:08,350 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1237.4ms TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2021-04-16 06:48:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-04-16 06:48:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 324. [2021-04-16 06:48:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 319 states have (on average 1.1974921630094044) internal successors, (382), 319 states have internal predecessors, (382), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 386 transitions. [2021-04-16 06:48:08,532 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 386 transitions. Word has length 72 [2021-04-16 06:48:08,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:08,532 INFO L480 AbstractCegarLoop]: Abstraction has 324 states and 386 transitions. [2021-04-16 06:48:08,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 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) [2021-04-16 06:48:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 386 transitions. [2021-04-16 06:48:08,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:48:08,533 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:08,533 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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, 1, 1] [2021-04-16 06:48:08,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-04-16 06:48:08,533 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:08,534 INFO L82 PathProgramCache]: Analyzing trace with hash -288430350, now seen corresponding path program 7 times [2021-04-16 06:48:08,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:08,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112792691] [2021-04-16 06:48:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:08,538 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:08,539 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:08,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:08,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:08,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:08,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:08,656 INFO L142 QuantifierPusher]: treesize reduction 90, result has 74.9 percent of original size [2021-04-16 06:48:08,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 268 [2021-04-16 06:48:08,712 INFO L142 QuantifierPusher]: treesize reduction 87, result has 88.0 percent of original size [2021-04-16 06:48:08,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 639 [2021-04-16 06:48:08,821 INFO L142 QuantifierPusher]: treesize reduction 88, result has 88.9 percent of original size [2021-04-16 06:48:08,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 704 [2021-04-16 06:48:08,915 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.3 percent of original size [2021-04-16 06:48:08,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 331 [2021-04-16 06:48:08,968 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:48:08,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:08,978 INFO L142 QuantifierPusher]: treesize reduction 21, result has 88.5 percent of original size [2021-04-16 06:48:08,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-04-16 06:48:08,989 INFO L142 QuantifierPusher]: treesize reduction 50, result has 86.8 percent of original size [2021-04-16 06:48:08,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 330 [2021-04-16 06:48:09,009 INFO L142 QuantifierPusher]: treesize reduction 58, result has 90.7 percent of original size [2021-04-16 06:48:09,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 569 [2021-04-16 06:48:09,033 INFO L142 QuantifierPusher]: treesize reduction 101, result has 84.2 percent of original size [2021-04-16 06:48:09,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 538 [2021-04-16 06:48:09,103 INFO L142 QuantifierPusher]: treesize reduction 103, result has 83.8 percent of original size [2021-04-16 06:48:09,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 533 [2021-04-16 06:48:09,109 INFO L142 QuantifierPusher]: treesize reduction 94, result has 70.8 percent of original size [2021-04-16 06:48:09,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-04-16 06:48:09,113 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 06:48:09,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:09,114 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:09,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:09,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:09,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:09,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:09,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:09,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112792691] [2021-04-16 06:48:09,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:09,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:48:09,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286034925] [2021-04-16 06:48:09,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:48:09,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:09,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:48:09,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:48:09,141 INFO L87 Difference]: Start difference. First operand 324 states and 386 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:09,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:09,541 INFO L93 Difference]: Finished difference Result 626 states and 735 transitions. [2021-04-16 06:48:09,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:48:09,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2021-04-16 06:48:09,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:09,542 INFO L225 Difference]: With dead ends: 626 [2021-04-16 06:48:09,543 INFO L226 Difference]: Without dead ends: 521 [2021-04-16 06:48:09,543 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 449.9ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:48:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-04-16 06:48:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 419. [2021-04-16 06:48:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 414 states have (on average 1.1956521739130435) internal successors, (495), 414 states have internal predecessors, (495), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 499 transitions. [2021-04-16 06:48:09,768 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 499 transitions. Word has length 72 [2021-04-16 06:48:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:09,768 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 499 transitions. [2021-04-16 06:48:09,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 499 transitions. [2021-04-16 06:48:09,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:48:09,769 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:09,769 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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, 1, 1] [2021-04-16 06:48:09,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-04-16 06:48:09,770 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:09,770 INFO L82 PathProgramCache]: Analyzing trace with hash -188563146, now seen corresponding path program 8 times [2021-04-16 06:48:09,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:09,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488133444] [2021-04-16 06:48:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:09,775 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:09,776 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:09,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:09,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:09,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:09,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:09,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:09,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:09,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:09,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:48:09,967 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-04-16 06:48:09,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:48:09,988 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-04-16 06:48:09,989 INFO L147 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size 17 [2021-04-16 06:48:09,995 INFO L142 QuantifierPusher]: treesize reduction 16, result has 55.6 percent of original size [2021-04-16 06:48:09,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:48:10,008 INFO L142 QuantifierPusher]: treesize reduction 10, result has 94.3 percent of original size [2021-04-16 06:48:10,009 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.8 percent of original size 159 [2021-04-16 06:48:10,074 INFO L142 QuantifierPusher]: treesize reduction 26, result has 85.9 percent of original size [2021-04-16 06:48:10,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-04-16 06:48:10,115 INFO L142 QuantifierPusher]: treesize reduction 30, result has 73.7 percent of original size [2021-04-16 06:48:10,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:48:10,130 INFO L142 QuantifierPusher]: treesize reduction 31, result has 87.7 percent of original size [2021-04-16 06:48:10,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:10,219 INFO L142 QuantifierPusher]: treesize reduction 33, result has 88.3 percent of original size [2021-04-16 06:48:10,220 INFO L147 QuantifierPusher]: treesize reduction 7, result has 97.2 percent of original size 241 [2021-04-16 06:48:10,304 INFO L142 QuantifierPusher]: treesize reduction 41, result has 88.3 percent of original size [2021-04-16 06:48:10,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-04-16 06:48:10,389 INFO L142 QuantifierPusher]: treesize reduction 37, result has 79.2 percent of original size [2021-04-16 06:48:10,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-04-16 06:48:10,459 INFO L142 QuantifierPusher]: treesize reduction 27, result has 56.5 percent of original size [2021-04-16 06:48:10,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:10,485 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:48:10,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:10,502 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 06:48:10,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,522 INFO L142 QuantifierPusher]: treesize reduction 30, result has 94.2 percent of original size [2021-04-16 06:48:10,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 490 [2021-04-16 06:48:10,627 INFO L142 QuantifierPusher]: treesize reduction 47, result has 90.3 percent of original size [2021-04-16 06:48:10,634 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.9 percent of original size 428 [2021-04-16 06:48:10,668 INFO L142 QuantifierPusher]: treesize reduction 47, result has 90.3 percent of original size [2021-04-16 06:48:10,669 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.0 percent of original size 431 [2021-04-16 06:48:10,798 INFO L142 QuantifierPusher]: treesize reduction 103, result has 88.2 percent of original size [2021-04-16 06:48:10,802 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.8 percent of original size 763 [2021-04-16 06:48:11,092 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 67 [2021-04-16 06:48:11,094 INFO L142 QuantifierPusher]: treesize reduction 109, result has 72.1 percent of original size [2021-04-16 06:48:11,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-04-16 06:48:11,132 INFO L142 QuantifierPusher]: treesize reduction 100, result has 74.2 percent of original size [2021-04-16 06:48:11,133 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.9 percent of original size 278 [2021-04-16 06:48:11,137 INFO L142 QuantifierPusher]: treesize reduction 82, result has 77.8 percent of original size [2021-04-16 06:48:11,138 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.9 percent of original size 278 [2021-04-16 06:48:11,140 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:11,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:11,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:11,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:11,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:11,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:11,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488133444] [2021-04-16 06:48:11,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:11,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:48:11,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159994563] [2021-04-16 06:48:11,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:48:11,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:11,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:48:11,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:48:11,170 INFO L87 Difference]: Start difference. First operand 419 states and 499 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:12,925 INFO L93 Difference]: Finished difference Result 1090 states and 1297 transitions. [2021-04-16 06:48:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-16 06:48:12,925 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 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 72 [2021-04-16 06:48:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:12,928 INFO L225 Difference]: With dead ends: 1090 [2021-04-16 06:48:12,928 INFO L226 Difference]: Without dead ends: 909 [2021-04-16 06:48:12,929 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1853.8ms TimeCoverageRelationStatistics Valid=273, Invalid=1059, Unknown=0, NotChecked=0, Total=1332 [2021-04-16 06:48:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-04-16 06:48:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 533. [2021-04-16 06:48:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 528 states have (on average 1.1799242424242424) internal successors, (623), 528 states have internal predecessors, (623), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 627 transitions. [2021-04-16 06:48:13,212 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 627 transitions. Word has length 72 [2021-04-16 06:48:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:13,212 INFO L480 AbstractCegarLoop]: Abstraction has 533 states and 627 transitions. [2021-04-16 06:48:13,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 627 transitions. [2021-04-16 06:48:13,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:48:13,214 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:13,214 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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, 1, 1] [2021-04-16 06:48:13,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-04-16 06:48:13,214 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:13,215 INFO L82 PathProgramCache]: Analyzing trace with hash 673002482, now seen corresponding path program 9 times [2021-04-16 06:48:13,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:13,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958496904] [2021-04-16 06:48:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:13,220 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:13,221 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:13,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:13,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:13,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:13,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:13,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:13,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:13,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:13,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:48:13,354 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-04-16 06:48:13,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:48:13,382 INFO L142 QuantifierPusher]: treesize reduction 16, result has 51.5 percent of original size [2021-04-16 06:48:13,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:48:13,383 INFO L142 QuantifierPusher]: treesize reduction 16, result has 55.6 percent of original size [2021-04-16 06:48:13,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:48:13,400 INFO L142 QuantifierPusher]: treesize reduction 19, result has 89.1 percent of original size [2021-04-16 06:48:13,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-04-16 06:48:13,477 INFO L142 QuantifierPusher]: treesize reduction 31, result has 91.3 percent of original size [2021-04-16 06:48:13,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 326 [2021-04-16 06:48:13,597 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2021-04-16 06:48:13,600 INFO L142 QuantifierPusher]: treesize reduction 59, result has 89.0 percent of original size [2021-04-16 06:48:13,603 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.1 percent of original size 470 [2021-04-16 06:48:13,743 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 43 [2021-04-16 06:48:13,747 INFO L142 QuantifierPusher]: treesize reduction 69, result has 88.7 percent of original size [2021-04-16 06:48:13,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 540 [2021-04-16 06:48:13,863 INFO L142 QuantifierPusher]: treesize reduction 40, result has 77.9 percent of original size [2021-04-16 06:48:13,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-04-16 06:48:13,924 INFO L142 QuantifierPusher]: treesize reduction 36, result has 50.0 percent of original size [2021-04-16 06:48:13,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:48:13,952 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-04-16 06:48:13,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:13,971 INFO L142 QuantifierPusher]: treesize reduction 17, result has 56.4 percent of original size [2021-04-16 06:48:13,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:48:13,991 INFO L142 QuantifierPusher]: treesize reduction 21, result has 89.8 percent of original size [2021-04-16 06:48:13,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:48:14,061 INFO L142 QuantifierPusher]: treesize reduction 46, result has 68.5 percent of original size [2021-04-16 06:48:14,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:48:14,088 INFO L142 QuantifierPusher]: treesize reduction 47, result has 88.2 percent of original size [2021-04-16 06:48:14,089 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.4 percent of original size 341 [2021-04-16 06:48:14,187 INFO L142 QuantifierPusher]: treesize reduction 73, result has 82.2 percent of original size [2021-04-16 06:48:14,188 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.3 percent of original size 328 [2021-04-16 06:48:14,252 INFO L142 QuantifierPusher]: treesize reduction 73, result has 82.0 percent of original size [2021-04-16 06:48:14,253 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.3 percent of original size 324 [2021-04-16 06:48:14,255 INFO L142 QuantifierPusher]: treesize reduction 38, result has 55.3 percent of original size [2021-04-16 06:48:14,256 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.9 percent of original size 38 [2021-04-16 06:48:14,258 INFO L142 QuantifierPusher]: treesize reduction 30, result has 59.5 percent of original size [2021-04-16 06:48:14,258 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-04-16 06:48:14,259 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:14,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:14,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:14,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:14,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:14,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:14,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958496904] [2021-04-16 06:48:14,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:14,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:48:14,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540659186] [2021-04-16 06:48:14,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:48:14,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:14,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:48:14,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:48:14,291 INFO L87 Difference]: Start difference. First operand 533 states and 627 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 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) [2021-04-16 06:48:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:15,868 INFO L93 Difference]: Finished difference Result 1044 states and 1236 transitions. [2021-04-16 06:48:15,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-16 06:48:15,869 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 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 72 [2021-04-16 06:48:15,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:15,871 INFO L225 Difference]: With dead ends: 1044 [2021-04-16 06:48:15,871 INFO L226 Difference]: Without dead ends: 875 [2021-04-16 06:48:15,872 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1458.4ms TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:48:15,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-04-16 06:48:16,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 680. [2021-04-16 06:48:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 675 states have (on average 1.1733333333333333) internal successors, (792), 675 states have internal predecessors, (792), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 796 transitions. [2021-04-16 06:48:16,282 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 796 transitions. Word has length 72 [2021-04-16 06:48:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:16,282 INFO L480 AbstractCegarLoop]: Abstraction has 680 states and 796 transitions. [2021-04-16 06:48:16,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 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) [2021-04-16 06:48:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 796 transitions. [2021-04-16 06:48:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:48:16,283 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:16,284 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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, 1, 1] [2021-04-16 06:48:16,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-04-16 06:48:16,284 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:16,284 INFO L82 PathProgramCache]: Analyzing trace with hash 479223478, now seen corresponding path program 10 times [2021-04-16 06:48:16,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:16,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870073005] [2021-04-16 06:48:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:16,289 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:16,289 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:16,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:16,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:16,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:16,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:48:16,424 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-04-16 06:48:16,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:48:16,446 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-04-16 06:48:16,447 INFO L147 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size 17 [2021-04-16 06:48:16,453 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size [2021-04-16 06:48:16,454 INFO L147 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-04-16 06:48:16,481 INFO L142 QuantifierPusher]: treesize reduction 17, result has 90.2 percent of original size [2021-04-16 06:48:16,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-04-16 06:48:16,563 INFO L142 QuantifierPusher]: treesize reduction 22, result has 87.9 percent of original size [2021-04-16 06:48:16,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-04-16 06:48:16,613 INFO L142 QuantifierPusher]: treesize reduction 20, result has 81.3 percent of original size [2021-04-16 06:48:16,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:48:16,630 INFO L142 QuantifierPusher]: treesize reduction 74, result has 82.7 percent of original size [2021-04-16 06:48:16,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 353 [2021-04-16 06:48:16,757 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 41 [2021-04-16 06:48:16,764 INFO L142 QuantifierPusher]: treesize reduction 93, result has 83.9 percent of original size [2021-04-16 06:48:16,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 485 [2021-04-16 06:48:16,852 INFO L142 QuantifierPusher]: treesize reduction 94, result has 85.5 percent of original size [2021-04-16 06:48:16,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 555 [2021-04-16 06:48:16,940 INFO L142 QuantifierPusher]: treesize reduction 29, result has 83.1 percent of original size [2021-04-16 06:48:16,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-04-16 06:48:16,989 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.1 percent of original size [2021-04-16 06:48:16,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:48:17,014 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-04-16 06:48:17,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:17,030 INFO L142 QuantifierPusher]: treesize reduction 17, result has 56.4 percent of original size [2021-04-16 06:48:17,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:48:17,048 INFO L142 QuantifierPusher]: treesize reduction 21, result has 89.8 percent of original size [2021-04-16 06:48:17,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:48:17,110 INFO L142 QuantifierPusher]: treesize reduction 37, result has 74.7 percent of original size [2021-04-16 06:48:17,111 INFO L147 QuantifierPusher]: treesize reduction 9, result has 91.7 percent of original size 100 [2021-04-16 06:48:17,131 INFO L142 QuantifierPusher]: treesize reduction 37, result has 75.2 percent of original size [2021-04-16 06:48:17,132 INFO L147 QuantifierPusher]: treesize reduction 9, result has 92.0 percent of original size 103 [2021-04-16 06:48:17,203 INFO L142 QuantifierPusher]: treesize reduction 102, result has 81.1 percent of original size [2021-04-16 06:48:17,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 437 [2021-04-16 06:48:17,353 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-04-16 06:48:17,354 INFO L142 QuantifierPusher]: treesize reduction 55, result has 42.7 percent of original size [2021-04-16 06:48:17,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:48:17,378 INFO L142 QuantifierPusher]: treesize reduction 48, result has 47.8 percent of original size [2021-04-16 06:48:17,379 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-04-16 06:48:17,380 INFO L142 QuantifierPusher]: treesize reduction 30, result has 59.5 percent of original size [2021-04-16 06:48:17,381 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-04-16 06:48:17,383 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:17,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:17,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:17,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:17,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:17,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:17,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:17,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870073005] [2021-04-16 06:48:17,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:17,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:48:17,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278742678] [2021-04-16 06:48:17,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:48:17,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:17,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:48:17,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:48:17,420 INFO L87 Difference]: Start difference. First operand 680 states and 796 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:19,030 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2021-04-16 06:48:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:19,174 INFO L93 Difference]: Finished difference Result 878 states and 1024 transitions. [2021-04-16 06:48:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-16 06:48:19,175 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 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 72 [2021-04-16 06:48:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:19,177 INFO L225 Difference]: With dead ends: 878 [2021-04-16 06:48:19,177 INFO L226 Difference]: Without dead ends: 837 [2021-04-16 06:48:19,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1732.4ms TimeCoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122 [2021-04-16 06:48:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-04-16 06:48:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 683. [2021-04-16 06:48:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 678 states have (on average 1.1725663716814159) internal successors, (795), 678 states have internal predecessors, (795), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 799 transitions. [2021-04-16 06:48:19,529 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 799 transitions. Word has length 72 [2021-04-16 06:48:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:19,530 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 799 transitions. [2021-04-16 06:48:19,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 799 transitions. [2021-04-16 06:48:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:48:19,532 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:19,532 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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, 1, 1] [2021-04-16 06:48:19,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-04-16 06:48:19,532 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:19,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1533502382, now seen corresponding path program 11 times [2021-04-16 06:48:19,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:19,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288643009] [2021-04-16 06:48:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:19,537 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:19,538 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:19,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:19,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:19,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:19,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:19,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:19,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:19,676 INFO L142 QuantifierPusher]: treesize reduction 13, result has 97.1 percent of original size [2021-04-16 06:48:19,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 437 [2021-04-16 06:48:19,769 INFO L142 QuantifierPusher]: treesize reduction 37, result has 91.1 percent of original size [2021-04-16 06:48:19,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 377 [2021-04-16 06:48:19,785 INFO L142 QuantifierPusher]: treesize reduction 14, result has 67.4 percent of original size [2021-04-16 06:48:19,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:48:19,812 INFO L142 QuantifierPusher]: treesize reduction 28, result has 37.8 percent of original size [2021-04-16 06:48:19,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:48:19,815 INFO L142 QuantifierPusher]: treesize reduction 35, result has 85.0 percent of original size [2021-04-16 06:48:19,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-04-16 06:48:19,892 INFO L142 QuantifierPusher]: treesize reduction 72, result has 77.3 percent of original size [2021-04-16 06:48:19,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-04-16 06:48:19,958 INFO L142 QuantifierPusher]: treesize reduction 58, result has 82.8 percent of original size [2021-04-16 06:48:19,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 279 [2021-04-16 06:48:19,985 INFO L142 QuantifierPusher]: treesize reduction 61, result has 88.3 percent of original size [2021-04-16 06:48:19,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 460 [2021-04-16 06:48:20,130 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 39 [2021-04-16 06:48:20,135 INFO L142 QuantifierPusher]: treesize reduction 70, result has 87.3 percent of original size [2021-04-16 06:48:20,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 481 [2021-04-16 06:48:20,284 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 41 [2021-04-16 06:48:20,288 INFO L142 QuantifierPusher]: treesize reduction 71, result has 88.5 percent of original size [2021-04-16 06:48:20,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 548 [2021-04-16 06:48:20,446 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 38 [2021-04-16 06:48:20,450 INFO L142 QuantifierPusher]: treesize reduction 60, result has 86.5 percent of original size [2021-04-16 06:48:20,452 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size 377 [2021-04-16 06:48:20,555 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size [2021-04-16 06:48:20,556 INFO L147 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size 35 [2021-04-16 06:48:20,591 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:48:20,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:20,613 INFO L142 QuantifierPusher]: treesize reduction 33, result has 86.1 percent of original size [2021-04-16 06:48:20,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-04-16 06:48:20,684 INFO L142 QuantifierPusher]: treesize reduction 60, result has 84.7 percent of original size [2021-04-16 06:48:20,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 331 [2021-04-16 06:48:20,718 INFO L142 QuantifierPusher]: treesize reduction 60, result has 84.8 percent of original size [2021-04-16 06:48:20,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-04-16 06:48:20,804 INFO L142 QuantifierPusher]: treesize reduction 123, result has 85.2 percent of original size [2021-04-16 06:48:20,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 708 [2021-04-16 06:48:20,988 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 53 [2021-04-16 06:48:20,992 INFO L142 QuantifierPusher]: treesize reduction 135, result has 81.1 percent of original size [2021-04-16 06:48:20,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 579 [2021-04-16 06:48:21,082 INFO L142 QuantifierPusher]: treesize reduction 135, result has 81.0 percent of original size [2021-04-16 06:48:21,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 576 [2021-04-16 06:48:21,089 INFO L142 QuantifierPusher]: treesize reduction 113, result has 66.9 percent of original size [2021-04-16 06:48:21,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-04-16 06:48:21,092 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 06:48:21,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:21,093 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:21,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:21,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:21,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:21,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:21,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:21,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:21,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288643009] [2021-04-16 06:48:21,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:21,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:48:21,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537670882] [2021-04-16 06:48:21,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:48:21,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:21,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:48:21,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:48:21,125 INFO L87 Difference]: Start difference. First operand 683 states and 799 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:22,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:22,563 INFO L93 Difference]: Finished difference Result 1109 states and 1282 transitions. [2021-04-16 06:48:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:48:22,564 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 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 72 [2021-04-16 06:48:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:22,566 INFO L225 Difference]: With dead ends: 1109 [2021-04-16 06:48:22,566 INFO L226 Difference]: Without dead ends: 952 [2021-04-16 06:48:22,567 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1858.8ms TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:48:22,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-04-16 06:48:23,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 803. [2021-04-16 06:48:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 798 states have (on average 1.1641604010025062) internal successors, (929), 798 states have internal predecessors, (929), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 933 transitions. [2021-04-16 06:48:23,019 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 933 transitions. Word has length 72 [2021-04-16 06:48:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:23,019 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 933 transitions. [2021-04-16 06:48:23,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 933 transitions. [2021-04-16 06:48:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:48:23,021 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:23,021 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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, 1, 1] [2021-04-16 06:48:23,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-04-16 06:48:23,022 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:23,022 INFO L82 PathProgramCache]: Analyzing trace with hash -532379858, now seen corresponding path program 12 times [2021-04-16 06:48:23,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:23,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123346888] [2021-04-16 06:48:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:23,027 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:23,028 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:23,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:23,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:23,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:23,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:23,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:23,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:23,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:23,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:48:23,161 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-04-16 06:48:23,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:48:23,190 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-04-16 06:48:23,191 INFO L147 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size 17 [2021-04-16 06:48:23,199 INFO L142 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size [2021-04-16 06:48:23,200 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.7 percent of original size 154 [2021-04-16 06:48:23,234 INFO L142 QuantifierPusher]: treesize reduction 116, result has 76.8 percent of original size [2021-04-16 06:48:23,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 383 [2021-04-16 06:48:23,338 INFO L142 QuantifierPusher]: treesize reduction 92, result has 88.4 percent of original size [2021-04-16 06:48:23,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 703 [2021-04-16 06:48:23,488 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 32 [2021-04-16 06:48:23,492 INFO L142 QuantifierPusher]: treesize reduction 93, result has 89.3 percent of original size [2021-04-16 06:48:23,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 773 [2021-04-16 06:48:23,632 INFO L142 QuantifierPusher]: treesize reduction 58, result has 87.0 percent of original size [2021-04-16 06:48:23,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 387 [2021-04-16 06:48:23,702 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-04-16 06:48:23,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 06:48:23,723 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-04-16 06:48:23,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:23,725 INFO L142 QuantifierPusher]: treesize reduction 23, result has 87.1 percent of original size [2021-04-16 06:48:23,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-04-16 06:48:23,741 INFO L142 QuantifierPusher]: treesize reduction 41, result has 88.9 percent of original size [2021-04-16 06:48:23,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-04-16 06:48:23,771 INFO L142 QuantifierPusher]: treesize reduction 47, result has 92.4 percent of original size [2021-04-16 06:48:23,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 570 [2021-04-16 06:48:23,894 INFO L142 QuantifierPusher]: treesize reduction 90, result has 85.6 percent of original size [2021-04-16 06:48:23,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 535 [2021-04-16 06:48:23,973 INFO L142 QuantifierPusher]: treesize reduction 92, result has 85.2 percent of original size [2021-04-16 06:48:23,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 529 [2021-04-16 06:48:23,978 INFO L142 QuantifierPusher]: treesize reduction 83, result has 73.0 percent of original size [2021-04-16 06:48:23,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-04-16 06:48:23,981 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 06:48:23,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:23,982 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:23,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:23,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:23,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:24,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:24,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:24,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123346888] [2021-04-16 06:48:24,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:24,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:48:24,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656580245] [2021-04-16 06:48:24,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:48:24,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:24,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:48:24,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:48:24,031 INFO L87 Difference]: Start difference. First operand 803 states and 933 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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) [2021-04-16 06:48:25,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:25,071 INFO L93 Difference]: Finished difference Result 1164 states and 1331 transitions. [2021-04-16 06:48:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-16 06:48:25,072 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 72 [2021-04-16 06:48:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:25,074 INFO L225 Difference]: With dead ends: 1164 [2021-04-16 06:48:25,074 INFO L226 Difference]: Without dead ends: 1028 [2021-04-16 06:48:25,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 974.4ms TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:48:25,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-04-16 06:48:25,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 808. [2021-04-16 06:48:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 803 states have (on average 1.1469489414694893) internal successors, (921), 803 states have internal predecessors, (921), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 925 transitions. [2021-04-16 06:48:25,527 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 925 transitions. Word has length 72 [2021-04-16 06:48:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:25,527 INFO L480 AbstractCegarLoop]: Abstraction has 808 states and 925 transitions. [2021-04-16 06:48:25,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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) [2021-04-16 06:48:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 925 transitions. [2021-04-16 06:48:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:48:25,529 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:25,529 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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, 1, 1] [2021-04-16 06:48:25,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-04-16 06:48:25,530 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:25,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:25,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1520169742, now seen corresponding path program 13 times [2021-04-16 06:48:25,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:25,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868298446] [2021-04-16 06:48:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:25,537 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:25,538 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:25,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:25,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:25,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:25,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:25,673 INFO L142 QuantifierPusher]: treesize reduction 10, result has 96.3 percent of original size [2021-04-16 06:48:25,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 263 [2021-04-16 06:48:25,763 INFO L142 QuantifierPusher]: treesize reduction 23, result has 92.8 percent of original size [2021-04-16 06:48:25,765 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.0 percent of original size 287 [2021-04-16 06:48:25,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:25,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:25,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:25,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:25,837 INFO L142 QuantifierPusher]: treesize reduction 92, result has 60.5 percent of original size [2021-04-16 06:48:25,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-04-16 06:48:25,877 INFO L142 QuantifierPusher]: treesize reduction 39, result has 85.7 percent of original size [2021-04-16 06:48:25,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-04-16 06:48:25,893 INFO L142 QuantifierPusher]: treesize reduction 44, result has 90.4 percent of original size [2021-04-16 06:48:25,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 412 [2021-04-16 06:48:26,008 INFO L142 QuantifierPusher]: treesize reduction 53, result has 89.1 percent of original size [2021-04-16 06:48:26,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 433 [2021-04-16 06:48:26,122 INFO L142 QuantifierPusher]: treesize reduction 54, result has 90.3 percent of original size [2021-04-16 06:48:26,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 503 [2021-04-16 06:48:26,239 INFO L142 QuantifierPusher]: treesize reduction 50, result has 87.0 percent of original size [2021-04-16 06:48:26,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-04-16 06:48:26,310 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-04-16 06:48:26,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:48:26,328 INFO L142 QuantifierPusher]: treesize reduction 25, result has 89.2 percent of original size [2021-04-16 06:48:26,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-04-16 06:48:26,350 INFO L142 QuantifierPusher]: treesize reduction 52, result has 86.5 percent of original size [2021-04-16 06:48:26,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-04-16 06:48:26,379 INFO L142 QuantifierPusher]: treesize reduction 52, result has 86.6 percent of original size [2021-04-16 06:48:26,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-04-16 06:48:26,466 INFO L142 QuantifierPusher]: treesize reduction 120, result has 85.6 percent of original size [2021-04-16 06:48:26,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 713 [2021-04-16 06:48:26,688 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 55 [2021-04-16 06:48:26,694 INFO L142 QuantifierPusher]: treesize reduction 132, result has 81.5 percent of original size [2021-04-16 06:48:26,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 580 [2021-04-16 06:48:26,793 INFO L142 QuantifierPusher]: treesize reduction 132, result has 81.4 percent of original size [2021-04-16 06:48:26,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 576 [2021-04-16 06:48:26,802 INFO L142 QuantifierPusher]: treesize reduction 105, result has 68.5 percent of original size [2021-04-16 06:48:26,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-04-16 06:48:26,806 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 06:48:26,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:26,807 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:26,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:26,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:26,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:26,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:26,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:26,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:26,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868298446] [2021-04-16 06:48:26,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:26,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:48:26,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023634307] [2021-04-16 06:48:26,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:48:26,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:26,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:48:26,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:48:26,837 INFO L87 Difference]: Start difference. First operand 808 states and 925 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:27,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:27,938 INFO L93 Difference]: Finished difference Result 1277 states and 1451 transitions. [2021-04-16 06:48:27,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:48:27,938 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 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 72 [2021-04-16 06:48:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:27,941 INFO L225 Difference]: With dead ends: 1277 [2021-04-16 06:48:27,941 INFO L226 Difference]: Without dead ends: 1168 [2021-04-16 06:48:27,942 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1152.6ms TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:48:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-04-16 06:48:28,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 837. [2021-04-16 06:48:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 832 states have (on average 1.1418269230769231) internal successors, (950), 832 states have internal predecessors, (950), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 954 transitions. [2021-04-16 06:48:28,389 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 954 transitions. Word has length 72 [2021-04-16 06:48:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:28,389 INFO L480 AbstractCegarLoop]: Abstraction has 837 states and 954 transitions. [2021-04-16 06:48:28,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 954 transitions. [2021-04-16 06:48:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-04-16 06:48:28,391 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:28,391 INFO L519 BasicCegarLoop]: trace histogram [12, 11, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:28,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-04-16 06:48:28,391 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:28,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:28,392 INFO L82 PathProgramCache]: Analyzing trace with hash -316626525, now seen corresponding path program 4 times [2021-04-16 06:48:28,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:28,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173120315] [2021-04-16 06:48:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:28,399 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:28,400 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:28,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:28,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:28,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:28,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:48:28,614 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:48:28,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:28,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:28,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:28,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:28,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:28,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173120315] [2021-04-16 06:48:28,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:28,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:48:28,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833793125] [2021-04-16 06:48:28,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:48:28,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:28,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:48:28,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:48:28,704 INFO L87 Difference]: Start difference. First operand 837 states and 954 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:31,440 INFO L93 Difference]: Finished difference Result 3537 states and 4133 transitions. [2021-04-16 06:48:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:48:31,441 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 72 [2021-04-16 06:48:31,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:31,448 INFO L225 Difference]: With dead ends: 3537 [2021-04-16 06:48:31,449 INFO L226 Difference]: Without dead ends: 3493 [2021-04-16 06:48:31,450 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 261.5ms TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:48:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2021-04-16 06:48:31,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 841. [2021-04-16 06:48:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 836 states have (on average 1.1435406698564594) internal successors, (956), 836 states have internal predecessors, (956), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 960 transitions. [2021-04-16 06:48:31,926 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 960 transitions. Word has length 72 [2021-04-16 06:48:31,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:31,926 INFO L480 AbstractCegarLoop]: Abstraction has 841 states and 960 transitions. [2021-04-16 06:48:31,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 960 transitions. [2021-04-16 06:48:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-04-16 06:48:31,928 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:31,928 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1] [2021-04-16 06:48:31,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-04-16 06:48:31,929 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:31,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:31,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2132024177, now seen corresponding path program 14 times [2021-04-16 06:48:31,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:31,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756615474] [2021-04-16 06:48:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:31,936 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:31,937 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:31,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:31,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:31,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:31,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:31,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:31,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:31,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:31,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:31,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:31,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:32,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:32,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:32,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:32,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:32,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:32,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:32,079 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:48:32,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:32,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:32,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:32,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:32,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:32,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756615474] [2021-04-16 06:48:32,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:32,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:48:32,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988121383] [2021-04-16 06:48:32,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:48:32,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:32,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:48:32,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:48:32,143 INFO L87 Difference]: Start difference. First operand 841 states and 960 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:34,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:34,155 INFO L93 Difference]: Finished difference Result 2368 states and 2751 transitions. [2021-04-16 06:48:34,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:48:34,156 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-04-16 06:48:34,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:34,161 INFO L225 Difference]: With dead ends: 2368 [2021-04-16 06:48:34,161 INFO L226 Difference]: Without dead ends: 2304 [2021-04-16 06:48:34,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 175.4ms TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:48:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2021-04-16 06:48:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 841. [2021-04-16 06:48:34,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 836 states have (on average 1.1435406698564594) internal successors, (956), 836 states have internal predecessors, (956), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:34,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 960 transitions. [2021-04-16 06:48:34,650 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 960 transitions. Word has length 73 [2021-04-16 06:48:34,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:34,651 INFO L480 AbstractCegarLoop]: Abstraction has 841 states and 960 transitions. [2021-04-16 06:48:34,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 960 transitions. [2021-04-16 06:48:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-04-16 06:48:34,652 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:34,652 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1] [2021-04-16 06:48:34,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-04-16 06:48:34,652 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:34,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:34,653 INFO L82 PathProgramCache]: Analyzing trace with hash -505226483, now seen corresponding path program 15 times [2021-04-16 06:48:34,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:34,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349301040] [2021-04-16 06:48:34,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:34,665 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:34,667 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:34,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:34,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:34,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:34,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:34,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:34,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:34,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:34,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:34,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:34,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:34,739 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-04-16 06:48:34,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:34,764 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size [2021-04-16 06:48:34,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:48:34,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:34,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:48:34,794 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:48:34,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:48:34,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:34,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:34,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:34,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:34,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349301040] [2021-04-16 06:48:34,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:34,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:48:34,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19745757] [2021-04-16 06:48:34,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:48:34,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:34,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:48:34,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:48:34,858 INFO L87 Difference]: Start difference. First operand 841 states and 960 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:36,199 INFO L93 Difference]: Finished difference Result 1490 states and 1721 transitions. [2021-04-16 06:48:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:48:36,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (3), 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 74 [2021-04-16 06:48:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:36,203 INFO L225 Difference]: With dead ends: 1490 [2021-04-16 06:48:36,203 INFO L226 Difference]: Without dead ends: 1387 [2021-04-16 06:48:36,204 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 191.8ms TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:48:36,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2021-04-16 06:48:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 899. [2021-04-16 06:48:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 894 states have (on average 1.1431767337807606) internal successors, (1022), 894 states have internal predecessors, (1022), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1026 transitions. [2021-04-16 06:48:36,770 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1026 transitions. Word has length 74 [2021-04-16 06:48:36,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:36,770 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1026 transitions. [2021-04-16 06:48:36,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:36,770 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1026 transitions. [2021-04-16 06:48:36,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-04-16 06:48:36,772 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:36,772 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1] [2021-04-16 06:48:36,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-04-16 06:48:36,772 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:36,772 INFO L82 PathProgramCache]: Analyzing trace with hash 583415094, now seen corresponding path program 16 times [2021-04-16 06:48:36,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:36,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682501436] [2021-04-16 06:48:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:36,778 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:36,779 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:36,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:36,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:36,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:36,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:36,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:36,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:36,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:36,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:36,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:36,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:36,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:36,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:36,949 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:48:36,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:36,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:36,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:37,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:37,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:37,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682501436] [2021-04-16 06:48:37,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:37,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:48:37,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895058077] [2021-04-16 06:48:37,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:48:37,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:37,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:48:37,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:48:37,031 INFO L87 Difference]: Start difference. First operand 899 states and 1026 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:39,502 INFO L93 Difference]: Finished difference Result 2682 states and 3117 transitions. [2021-04-16 06:48:39,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:48:39,503 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 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 75 [2021-04-16 06:48:39,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:39,511 INFO L225 Difference]: With dead ends: 2682 [2021-04-16 06:48:39,512 INFO L226 Difference]: Without dead ends: 2618 [2021-04-16 06:48:39,513 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 223.2ms TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:48:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-04-16 06:48:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 899. [2021-04-16 06:48:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 894 states have (on average 1.1431767337807606) internal successors, (1022), 894 states have internal predecessors, (1022), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1026 transitions. [2021-04-16 06:48:40,072 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1026 transitions. Word has length 75 [2021-04-16 06:48:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:40,072 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1026 transitions. [2021-04-16 06:48:40,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1026 transitions. [2021-04-16 06:48:40,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-04-16 06:48:40,073 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:40,073 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 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, 1] [2021-04-16 06:48:40,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-04-16 06:48:40,074 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:40,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:40,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1267467800, now seen corresponding path program 17 times [2021-04-16 06:48:40,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:40,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132408990] [2021-04-16 06:48:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:40,079 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:40,080 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:40,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:40,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:40,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:40,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:40,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:48:40,208 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:48:40,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:40,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:40,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:40,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:40,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132408990] [2021-04-16 06:48:40,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:40,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 06:48:40,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237637896] [2021-04-16 06:48:40,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 06:48:40,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:40,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 06:48:40,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:48:40,267 INFO L87 Difference]: Start difference. First operand 899 states and 1026 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:41,917 INFO L93 Difference]: Finished difference Result 1810 states and 2093 transitions. [2021-04-16 06:48:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:48:41,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 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 76 [2021-04-16 06:48:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:41,922 INFO L225 Difference]: With dead ends: 1810 [2021-04-16 06:48:41,922 INFO L226 Difference]: Without dead ends: 1707 [2021-04-16 06:48:41,924 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 187.5ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:48:41,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-04-16 06:48:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 899. [2021-04-16 06:48:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 894 states have (on average 1.1431767337807606) internal successors, (1022), 894 states have internal predecessors, (1022), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1026 transitions. [2021-04-16 06:48:42,607 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1026 transitions. Word has length 76 [2021-04-16 06:48:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:42,607 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1026 transitions. [2021-04-16 06:48:42,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1026 transitions. [2021-04-16 06:48:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-04-16 06:48:42,608 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:42,608 INFO L519 BasicCegarLoop]: trace histogram [14, 13, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:42,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-04-16 06:48:42,609 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:42,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:42,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1780671001, now seen corresponding path program 5 times [2021-04-16 06:48:42,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:42,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777803016] [2021-04-16 06:48:42,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:42,615 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:42,616 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:42,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:42,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:42,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:42,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:48:42,838 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:48:42,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:42,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:42,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:42,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:42,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:42,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777803016] [2021-04-16 06:48:42,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:42,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:48:42,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973847209] [2021-04-16 06:48:42,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:48:42,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:42,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:48:42,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:48:42,914 INFO L87 Difference]: Start difference. First operand 899 states and 1026 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:46,899 INFO L93 Difference]: Finished difference Result 4169 states and 4871 transitions. [2021-04-16 06:48:46,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-16 06:48:46,900 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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 76 [2021-04-16 06:48:46,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:46,907 INFO L225 Difference]: With dead ends: 4169 [2021-04-16 06:48:46,907 INFO L226 Difference]: Without dead ends: 4125 [2021-04-16 06:48:46,908 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 252.3ms TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:48:46,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4125 states. [2021-04-16 06:48:47,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4125 to 903. [2021-04-16 06:48:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 898 states have (on average 1.1447661469933186) internal successors, (1028), 898 states have internal predecessors, (1028), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1032 transitions. [2021-04-16 06:48:47,513 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1032 transitions. Word has length 76 [2021-04-16 06:48:47,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:47,513 INFO L480 AbstractCegarLoop]: Abstraction has 903 states and 1032 transitions. [2021-04-16 06:48:47,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1032 transitions. [2021-04-16 06:48:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-04-16 06:48:47,515 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:47,515 INFO L519 BasicCegarLoop]: trace histogram [10, 9, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1] [2021-04-16 06:48:47,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-04-16 06:48:47,515 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:47,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:47,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1571229253, now seen corresponding path program 18 times [2021-04-16 06:48:47,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:47,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203727437] [2021-04-16 06:48:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:47,523 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:47,524 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:47,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:47,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:47,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:47,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:47,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:47,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:47,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:47,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:47,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:47,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:47,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:47,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:47,722 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-04-16 06:48:47,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:48:47,744 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:48:47,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:48:47,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:47,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:47,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:47,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203727437] [2021-04-16 06:48:47,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:47,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:48:47,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442547328] [2021-04-16 06:48:47,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:48:47,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:47,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:48:47,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:48:47,822 INFO L87 Difference]: Start difference. First operand 903 states and 1032 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:50,888 INFO L93 Difference]: Finished difference Result 3000 states and 3489 transitions. [2021-04-16 06:48:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:48:50,889 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 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 77 [2021-04-16 06:48:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:50,893 INFO L225 Difference]: With dead ends: 3000 [2021-04-16 06:48:50,894 INFO L226 Difference]: Without dead ends: 2936 [2021-04-16 06:48:50,895 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 294.1ms TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:48:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2021-04-16 06:48:51,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 903. [2021-04-16 06:48:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 898 states have (on average 1.1447661469933186) internal successors, (1028), 898 states have internal predecessors, (1028), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1032 transitions. [2021-04-16 06:48:51,499 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1032 transitions. Word has length 77 [2021-04-16 06:48:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:51,500 INFO L480 AbstractCegarLoop]: Abstraction has 903 states and 1032 transitions. [2021-04-16 06:48:51,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1032 transitions. [2021-04-16 06:48:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-04-16 06:48:51,501 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:51,501 INFO L519 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 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, 1] [2021-04-16 06:48:51,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-04-16 06:48:51,501 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash 658034179, now seen corresponding path program 19 times [2021-04-16 06:48:51,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:51,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75678773] [2021-04-16 06:48:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:51,506 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:51,507 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:51,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:51,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:51,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:51,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:51,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:51,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:51,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:51,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:51,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:51,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:51,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:51,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:51,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:51,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:51,593 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-04-16 06:48:51,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:48:51,620 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size [2021-04-16 06:48:51,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:48:51,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:51,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:48:51,645 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:48:51,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:48:51,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:51,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:51,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:51,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:51,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75678773] [2021-04-16 06:48:51,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:51,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 06:48:51,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638357692] [2021-04-16 06:48:51,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 06:48:51,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:51,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 06:48:51,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:48:51,694 INFO L87 Difference]: Start difference. First operand 903 states and 1032 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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) [2021-04-16 06:48:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:53,776 INFO L93 Difference]: Finished difference Result 2134 states and 2471 transitions. [2021-04-16 06:48:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:48:53,776 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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 78 [2021-04-16 06:48:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:53,779 INFO L225 Difference]: With dead ends: 2134 [2021-04-16 06:48:53,780 INFO L226 Difference]: Without dead ends: 2031 [2021-04-16 06:48:53,780 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 192.7ms TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:48:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-04-16 06:48:54,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 903. [2021-04-16 06:48:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 898 states have (on average 1.1447661469933186) internal successors, (1028), 898 states have internal predecessors, (1028), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1032 transitions. [2021-04-16 06:48:54,377 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1032 transitions. Word has length 78 [2021-04-16 06:48:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:54,378 INFO L480 AbstractCegarLoop]: Abstraction has 903 states and 1032 transitions. [2021-04-16 06:48:54,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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) [2021-04-16 06:48:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1032 transitions. [2021-04-16 06:48:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-04-16 06:48:54,379 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:54,379 INFO L519 BasicCegarLoop]: trace histogram [11, 10, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1] [2021-04-16 06:48:54,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-04-16 06:48:54,379 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:54,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash -2010210048, now seen corresponding path program 20 times [2021-04-16 06:48:54,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:54,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547403544] [2021-04-16 06:48:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:54,385 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:54,386 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:54,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:54,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:54,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:54,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:54,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:54,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:54,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:54,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:54,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:54,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:54,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:54,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:54,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:54,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:48:54,581 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:48:54,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:48:54,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:54,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:54,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547403544] [2021-04-16 06:48:54,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:54,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:48:54,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820791153] [2021-04-16 06:48:54,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:48:54,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:54,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:48:54,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:48:54,663 INFO L87 Difference]: Start difference. First operand 903 states and 1032 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:58,194 INFO L93 Difference]: Finished difference Result 3314 states and 3855 transitions. [2021-04-16 06:48:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:48:58,195 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 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 79 [2021-04-16 06:48:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:58,200 INFO L225 Difference]: With dead ends: 3314 [2021-04-16 06:48:58,200 INFO L226 Difference]: Without dead ends: 3250 [2021-04-16 06:48:58,201 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 239.6ms TimeCoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:48:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2021-04-16 06:48:58,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 903. [2021-04-16 06:48:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 898 states have (on average 1.1447661469933186) internal successors, (1028), 898 states have internal predecessors, (1028), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1032 transitions. [2021-04-16 06:48:58,825 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1032 transitions. Word has length 79 [2021-04-16 06:48:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:58,825 INFO L480 AbstractCegarLoop]: Abstraction has 903 states and 1032 transitions. [2021-04-16 06:48:58,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:58,825 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1032 transitions. [2021-04-16 06:48:58,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-04-16 06:48:58,826 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:58,826 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 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, 1] [2021-04-16 06:48:58,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-04-16 06:48:58,826 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:58,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:58,826 INFO L82 PathProgramCache]: Analyzing trace with hash -65468578, now seen corresponding path program 21 times [2021-04-16 06:48:58,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:58,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812212145] [2021-04-16 06:48:58,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:58,831 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:58,832 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:58,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:58,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:58,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:58,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:58,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:58,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:58,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:58,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:58,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:58,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:58,951 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:48:58,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:58,974 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:48:58,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:48:58,998 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:48:58,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:48:59,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:59,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:59,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:59,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:59,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:59,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812212145] [2021-04-16 06:48:59,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:59,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:48:59,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008639443] [2021-04-16 06:48:59,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:48:59,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:59,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:48:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:48:59,057 INFO L87 Difference]: Start difference. First operand 903 states and 1032 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:01,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:01,761 INFO L93 Difference]: Finished difference Result 2491 states and 2888 transitions. [2021-04-16 06:49:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:49:01,762 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 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 80 [2021-04-16 06:49:01,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:01,768 INFO L225 Difference]: With dead ends: 2491 [2021-04-16 06:49:01,769 INFO L226 Difference]: Without dead ends: 2388 [2021-04-16 06:49:01,770 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 240.9ms TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:49:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2021-04-16 06:49:02,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 903. [2021-04-16 06:49:02,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 898 states have (on average 1.1447661469933186) internal successors, (1028), 898 states have internal predecessors, (1028), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1032 transitions. [2021-04-16 06:49:02,443 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1032 transitions. Word has length 80 [2021-04-16 06:49:02,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:02,443 INFO L480 AbstractCegarLoop]: Abstraction has 903 states and 1032 transitions. [2021-04-16 06:49:02,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1032 transitions. [2021-04-16 06:49:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-04-16 06:49:02,445 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:02,445 INFO L519 BasicCegarLoop]: trace histogram [16, 15, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:02,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-04-16 06:49:02,445 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:02,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1312297073, now seen corresponding path program 6 times [2021-04-16 06:49:02,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:02,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288869547] [2021-04-16 06:49:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:02,450 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:02,451 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:02,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:02,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:02,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:02,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:49:02,740 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:49:02,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:49:02,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:02,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:02,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:02,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288869547] [2021-04-16 06:49:02,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:02,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:49:02,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633722955] [2021-04-16 06:49:02,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:49:02,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:02,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:49:02,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:49:02,820 INFO L87 Difference]: Start difference. First operand 903 states and 1032 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 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) [2021-04-16 06:49:08,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:08,655 INFO L93 Difference]: Finished difference Result 4801 states and 5609 transitions. [2021-04-16 06:49:08,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:49:08,655 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 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 80 [2021-04-16 06:49:08,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:08,665 INFO L225 Difference]: With dead ends: 4801 [2021-04-16 06:49:08,666 INFO L226 Difference]: Without dead ends: 4757 [2021-04-16 06:49:08,667 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 320.9ms TimeCoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:49:08,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2021-04-16 06:49:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 907. [2021-04-16 06:49:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 902 states have (on average 1.146341463414634) internal successors, (1034), 902 states have internal predecessors, (1034), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1038 transitions. [2021-04-16 06:49:09,365 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1038 transitions. Word has length 80 [2021-04-16 06:49:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:09,365 INFO L480 AbstractCegarLoop]: Abstraction has 907 states and 1038 transitions. [2021-04-16 06:49:09,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 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) [2021-04-16 06:49:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1038 transitions. [2021-04-16 06:49:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-04-16 06:49:09,367 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:09,367 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:09,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-04-16 06:49:09,367 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:09,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:09,368 INFO L82 PathProgramCache]: Analyzing trace with hash 598040280, now seen corresponding path program 22 times [2021-04-16 06:49:09,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:09,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417694935] [2021-04-16 06:49:09,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:09,373 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:09,374 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:09,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:09,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:09,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:09,426 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:49:09,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:09,443 INFO L142 QuantifierPusher]: treesize reduction 7, result has 73.1 percent of original size [2021-04-16 06:49:09,444 INFO L147 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size 11 [2021-04-16 06:49:09,450 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.9 percent of original size [2021-04-16 06:49:09,451 INFO L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-04-16 06:49:09,476 INFO L142 QuantifierPusher]: treesize reduction 16, result has 50.0 percent of original size [2021-04-16 06:49:09,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:49:09,488 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-04-16 06:49:09,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:49:09,535 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-04-16 06:49:09,536 INFO L147 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size 22 [2021-04-16 06:49:09,538 INFO L142 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-04-16 06:49:09,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:09,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:09,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:09,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417694935] [2021-04-16 06:49:09,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:09,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:49:09,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180497171] [2021-04-16 06:49:09,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:49:09,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:09,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:49:09,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:49:09,567 INFO L87 Difference]: Start difference. First operand 907 states and 1038 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:10,580 INFO L93 Difference]: Finished difference Result 1095 states and 1249 transitions. [2021-04-16 06:49:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:49:10,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 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 81 [2021-04-16 06:49:10,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:10,583 INFO L225 Difference]: With dead ends: 1095 [2021-04-16 06:49:10,583 INFO L226 Difference]: Without dead ends: 618 [2021-04-16 06:49:10,585 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 146.2ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:49:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-04-16 06:49:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 564. [2021-04-16 06:49:11,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 559 states have (on average 1.150268336314848) internal successors, (643), 559 states have internal predecessors, (643), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 647 transitions. [2021-04-16 06:49:11,212 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 647 transitions. Word has length 81 [2021-04-16 06:49:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:11,212 INFO L480 AbstractCegarLoop]: Abstraction has 564 states and 647 transitions. [2021-04-16 06:49:11,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 647 transitions. [2021-04-16 06:49:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-04-16 06:49:11,213 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:11,213 INFO L519 BasicCegarLoop]: trace histogram [12, 11, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1] [2021-04-16 06:49:11,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-04-16 06:49:11,213 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:11,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1331008261, now seen corresponding path program 23 times [2021-04-16 06:49:11,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:11,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913207361] [2021-04-16 06:49:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:11,220 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:11,221 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:11,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:11,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:11,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:11,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:49:11,446 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-04-16 06:49:11,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:49:11,467 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:49:11,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:49:11,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:11,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:11,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:11,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:11,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913207361] [2021-04-16 06:49:11,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:11,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:49:11,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783584324] [2021-04-16 06:49:11,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:49:11,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:11,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:49:11,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:49:11,544 INFO L87 Difference]: Start difference. First operand 564 states and 647 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:15,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:15,888 INFO L93 Difference]: Finished difference Result 3266 states and 3807 transitions. [2021-04-16 06:49:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:49:15,889 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 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 81 [2021-04-16 06:49:15,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:15,896 INFO L225 Difference]: With dead ends: 3266 [2021-04-16 06:49:15,897 INFO L226 Difference]: Without dead ends: 3202 [2021-04-16 06:49:15,898 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 303.0ms TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:49:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2021-04-16 06:49:16,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 564. [2021-04-16 06:49:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 559 states have (on average 1.150268336314848) internal successors, (643), 559 states have internal predecessors, (643), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 647 transitions. [2021-04-16 06:49:16,506 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 647 transitions. Word has length 81 [2021-04-16 06:49:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:16,506 INFO L480 AbstractCegarLoop]: Abstraction has 564 states and 647 transitions. [2021-04-16 06:49:16,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 647 transitions. [2021-04-16 06:49:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-04-16 06:49:16,507 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:16,507 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:16,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-04-16 06:49:16,508 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:16,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1790824352, now seen corresponding path program 24 times [2021-04-16 06:49:16,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:16,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405390017] [2021-04-16 06:49:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:16,513 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:16,514 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:16,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:16,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:16,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:16,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:16,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:16,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:16,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:16,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:16,611 INFO L142 QuantifierPusher]: treesize reduction 51, result has 75.6 percent of original size [2021-04-16 06:49:16,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-04-16 06:49:16,672 INFO L142 QuantifierPusher]: treesize reduction 109, result has 72.3 percent of original size [2021-04-16 06:49:16,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 285 [2021-04-16 06:49:16,783 INFO L142 QuantifierPusher]: treesize reduction 109, result has 72.3 percent of original size [2021-04-16 06:49:16,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 285 [2021-04-16 06:49:16,897 INFO L142 QuantifierPusher]: treesize reduction 109, result has 72.5 percent of original size [2021-04-16 06:49:16,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 288 [2021-04-16 06:49:17,017 INFO L142 QuantifierPusher]: treesize reduction 27, result has 93.7 percent of original size [2021-04-16 06:49:17,020 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.8 percent of original size 393 [2021-04-16 06:49:17,198 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 34 [2021-04-16 06:49:17,201 INFO L142 QuantifierPusher]: treesize reduction 43, result has 90.4 percent of original size [2021-04-16 06:49:17,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 406 [2021-04-16 06:49:17,313 INFO L142 QuantifierPusher]: treesize reduction 45, result has 89.4 percent of original size [2021-04-16 06:49:17,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-04-16 06:49:17,413 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-04-16 06:49:17,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:49:17,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 60.9 percent of original size [2021-04-16 06:49:17,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:49:17,452 INFO L142 QuantifierPusher]: treesize reduction 13, result has 56.7 percent of original size [2021-04-16 06:49:17,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:49:17,478 INFO L142 QuantifierPusher]: treesize reduction 78, result has 79.6 percent of original size [2021-04-16 06:49:17,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-04-16 06:49:17,588 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:49:17,590 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.4 percent of original size 335 [2021-04-16 06:49:17,688 INFO L142 QuantifierPusher]: treesize reduction 88, result has 74.0 percent of original size [2021-04-16 06:49:17,690 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.4 percent of original size 242 [2021-04-16 06:49:17,693 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:49:17,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:17,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:17,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:17,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405390017] [2021-04-16 06:49:17,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:17,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:49:17,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000239033] [2021-04-16 06:49:17,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:49:17,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:17,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:49:17,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:49:17,727 INFO L87 Difference]: Start difference. First operand 564 states and 647 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:18,848 INFO L93 Difference]: Finished difference Result 608 states and 695 transitions. [2021-04-16 06:49:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:49:18,849 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 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 82 [2021-04-16 06:49:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:18,850 INFO L225 Difference]: With dead ends: 608 [2021-04-16 06:49:18,850 INFO L226 Difference]: Without dead ends: 403 [2021-04-16 06:49:18,851 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1413.8ms TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:49:18,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-04-16 06:49:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-04-16 06:49:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 398 states have (on average 1.1884422110552764) internal successors, (473), 398 states have internal predecessors, (473), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:19,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 477 transitions. [2021-04-16 06:49:19,237 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 477 transitions. Word has length 82 [2021-04-16 06:49:19,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:19,237 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 477 transitions. [2021-04-16 06:49:19,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 477 transitions. [2021-04-16 06:49:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-04-16 06:49:19,238 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:19,238 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 4, 4, 4, 4, 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, 1] [2021-04-16 06:49:19,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-04-16 06:49:19,239 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:19,239 INFO L82 PathProgramCache]: Analyzing trace with hash 433083897, now seen corresponding path program 25 times [2021-04-16 06:49:19,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:19,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760814476] [2021-04-16 06:49:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:19,255 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:19,256 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:19,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:19,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:19,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:19,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:19,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:19,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:19,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:19,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:19,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:19,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:49:19,410 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-04-16 06:49:19,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:49:19,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:49:19,453 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:49:19,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:49:19,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:19,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:19,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760814476] [2021-04-16 06:49:19,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:19,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:49:19,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945026234] [2021-04-16 06:49:19,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:49:19,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:19,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:49:19,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:49:19,531 INFO L87 Difference]: Start difference. First operand 403 states and 477 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:22,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:22,699 INFO L93 Difference]: Finished difference Result 2204 states and 2579 transitions. [2021-04-16 06:49:22,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:49:22,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 13 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 82 [2021-04-16 06:49:22,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:22,702 INFO L225 Difference]: With dead ends: 2204 [2021-04-16 06:49:22,703 INFO L226 Difference]: Without dead ends: 2101 [2021-04-16 06:49:22,703 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 293.6ms TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:49:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2021-04-16 06:49:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 403. [2021-04-16 06:49:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 398 states have (on average 1.1884422110552764) internal successors, (473), 398 states have internal predecessors, (473), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 477 transitions. [2021-04-16 06:49:23,125 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 477 transitions. Word has length 82 [2021-04-16 06:49:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:23,125 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 477 transitions. [2021-04-16 06:49:23,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 477 transitions. [2021-04-16 06:49:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-04-16 06:49:23,126 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:23,126 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 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, 1, 1, 1, 1, 1] [2021-04-16 06:49:23,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-04-16 06:49:23,126 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:23,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1126702179, now seen corresponding path program 26 times [2021-04-16 06:49:23,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:23,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702395130] [2021-04-16 06:49:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:23,132 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:23,133 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:23,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:23,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:23,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:23,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:23,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:23,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:23,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:23,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:23,264 INFO L142 QuantifierPusher]: treesize reduction 25, result has 92.7 percent of original size [2021-04-16 06:49:23,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 317 [2021-04-16 06:49:23,351 INFO L142 QuantifierPusher]: treesize reduction 60, result has 86.4 percent of original size [2021-04-16 06:49:23,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 382 [2021-04-16 06:49:23,439 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:49:23,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:49:23,454 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-16 06:49:23,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:49:23,472 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-04-16 06:49:23,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:49:23,495 INFO L142 QuantifierPusher]: treesize reduction 67, result has 82.6 percent of original size [2021-04-16 06:49:23,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 319 [2021-04-16 06:49:23,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:23,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:23,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:23,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:23,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:23,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:23,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702395130] [2021-04-16 06:49:23,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:23,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:49:23,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759163838] [2021-04-16 06:49:23,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:49:23,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:23,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:49:23,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:49:23,647 INFO L87 Difference]: Start difference. First operand 403 states and 477 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:24,858 INFO L93 Difference]: Finished difference Result 662 states and 781 transitions. [2021-04-16 06:49:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:49:24,859 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 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 83 [2021-04-16 06:49:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:24,860 INFO L225 Difference]: With dead ends: 662 [2021-04-16 06:49:24,860 INFO L226 Difference]: Without dead ends: 657 [2021-04-16 06:49:24,861 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 410.5ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:49:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-04-16 06:49:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 452. [2021-04-16 06:49:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 447 states have (on average 1.1856823266219239) internal successors, (530), 447 states have internal predecessors, (530), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 534 transitions. [2021-04-16 06:49:25,369 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 534 transitions. Word has length 83 [2021-04-16 06:49:25,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:25,369 INFO L480 AbstractCegarLoop]: Abstraction has 452 states and 534 transitions. [2021-04-16 06:49:25,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 534 transitions. [2021-04-16 06:49:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:49:25,369 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:25,370 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:25,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-04-16 06:49:25,370 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:25,370 INFO L82 PathProgramCache]: Analyzing trace with hash 162728781, now seen corresponding path program 27 times [2021-04-16 06:49:25,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:25,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089415715] [2021-04-16 06:49:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:25,375 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:25,376 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:25,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:25,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:25,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:25,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:25,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:25,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:25,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:49:25,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:49:25,503 INFO L142 QuantifierPusher]: treesize reduction 19, result has 81.6 percent of original size [2021-04-16 06:49:25,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:49:25,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:25,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:49:25,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:25,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:25,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:25,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089415715] [2021-04-16 06:49:25,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:25,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:49:25,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028939703] [2021-04-16 06:49:25,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:49:25,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:25,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:49:25,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:49:25,624 INFO L87 Difference]: Start difference. First operand 452 states and 534 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:27,485 INFO L93 Difference]: Finished difference Result 762 states and 894 transitions. [2021-04-16 06:49:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:49:27,486 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (3), 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 93 [2021-04-16 06:49:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:27,488 INFO L225 Difference]: With dead ends: 762 [2021-04-16 06:49:27,489 INFO L226 Difference]: Without dead ends: 757 [2021-04-16 06:49:27,489 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 375.6ms TimeCoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:49:27,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2021-04-16 06:49:28,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 540. [2021-04-16 06:49:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 535 states have (on average 1.183177570093458) internal successors, (633), 535 states have internal predecessors, (633), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 637 transitions. [2021-04-16 06:49:28,274 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 637 transitions. Word has length 93 [2021-04-16 06:49:28,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:28,274 INFO L480 AbstractCegarLoop]: Abstraction has 540 states and 637 transitions. [2021-04-16 06:49:28,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 637 transitions. [2021-04-16 06:49:28,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:49:28,275 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:28,275 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:28,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-04-16 06:49:28,276 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:28,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:28,276 INFO L82 PathProgramCache]: Analyzing trace with hash -424077233, now seen corresponding path program 28 times [2021-04-16 06:49:28,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:28,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626521354] [2021-04-16 06:49:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:28,281 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:28,282 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:28,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:28,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:28,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:28,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:28,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:28,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:28,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:28,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:49:28,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:28,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:49:28,432 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-04-16 06:49:28,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:49:28,457 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-04-16 06:49:28,458 INFO L147 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size 17 [2021-04-16 06:49:28,466 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size [2021-04-16 06:49:28,467 INFO L147 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-04-16 06:49:28,493 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.4 percent of original size [2021-04-16 06:49:28,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:49:28,534 INFO L142 QuantifierPusher]: treesize reduction 27, result has 92.3 percent of original size [2021-04-16 06:49:28,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-04-16 06:49:28,656 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2021-04-16 06:49:28,660 INFO L142 QuantifierPusher]: treesize reduction 39, result has 92.4 percent of original size [2021-04-16 06:49:28,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 471 [2021-04-16 06:49:28,819 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 29 [2021-04-16 06:49:28,825 INFO L142 QuantifierPusher]: treesize reduction 82, result has 90.4 percent of original size [2021-04-16 06:49:28,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 771 [2021-04-16 06:49:28,989 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 43 [2021-04-16 06:49:28,995 INFO L142 QuantifierPusher]: treesize reduction 83, result has 91.0 percent of original size [2021-04-16 06:49:28,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 836 [2021-04-16 06:49:29,159 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 39 [2021-04-16 06:49:29,164 INFO L142 QuantifierPusher]: treesize reduction 54, result has 89.1 percent of original size [2021-04-16 06:49:29,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 441 [2021-04-16 06:49:29,278 INFO L142 QuantifierPusher]: treesize reduction 37, result has 61.5 percent of original size [2021-04-16 06:49:29,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:49:29,321 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:49:29,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:49:29,345 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 06:49:29,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:29,372 INFO L142 QuantifierPusher]: treesize reduction 22, result has 52.2 percent of original size [2021-04-16 06:49:29,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:29,406 INFO L142 QuantifierPusher]: treesize reduction 75, result has 81.3 percent of original size [2021-04-16 06:49:29,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-04-16 06:49:29,502 INFO L142 QuantifierPusher]: treesize reduction 51, result has 88.7 percent of original size [2021-04-16 06:49:29,504 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.8 percent of original size 392 [2021-04-16 06:49:29,547 INFO L142 QuantifierPusher]: treesize reduction 59, result has 91.6 percent of original size [2021-04-16 06:49:29,563 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.6 percent of original size 633 [2021-04-16 06:49:29,746 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 35 [2021-04-16 06:49:29,752 INFO L142 QuantifierPusher]: treesize reduction 102, result has 85.7 percent of original size [2021-04-16 06:49:29,755 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.5 percent of original size 602 [2021-04-16 06:49:29,925 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 24 [2021-04-16 06:49:29,931 INFO L142 QuantifierPusher]: treesize reduction 126, result has 82.3 percent of original size [2021-04-16 06:49:29,934 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.5 percent of original size 575 [2021-04-16 06:49:29,941 INFO L142 QuantifierPusher]: treesize reduction 91, result has 77.4 percent of original size [2021-04-16 06:49:29,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 311 [2021-04-16 06:49:29,948 INFO L142 QuantifierPusher]: treesize reduction 86, result has 74.5 percent of original size [2021-04-16 06:49:29,950 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.4 percent of original size 242 [2021-04-16 06:49:29,953 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:49:29,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:29,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:29,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:29,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:29,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:29,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:29,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626521354] [2021-04-16 06:49:29,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:29,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:49:29,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002296163] [2021-04-16 06:49:29,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:49:29,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:29,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:49:29,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:49:29,997 INFO L87 Difference]: Start difference. First operand 540 states and 637 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:33,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:33,356 INFO L93 Difference]: Finished difference Result 1798 states and 2104 transitions. [2021-04-16 06:49:33,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-16 06:49:33,357 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 2 states have call successors, (3), 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 93 [2021-04-16 06:49:33,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:33,359 INFO L225 Difference]: With dead ends: 1798 [2021-04-16 06:49:33,359 INFO L226 Difference]: Without dead ends: 1480 [2021-04-16 06:49:33,360 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1957.3ms TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2021-04-16 06:49:33,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-04-16 06:49:34,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 854. [2021-04-16 06:49:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 849 states have (on average 1.1566548881036514) internal successors, (982), 849 states have internal predecessors, (982), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 986 transitions. [2021-04-16 06:49:34,609 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 986 transitions. Word has length 93 [2021-04-16 06:49:34,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:34,609 INFO L480 AbstractCegarLoop]: Abstraction has 854 states and 986 transitions. [2021-04-16 06:49:34,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:34,610 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 986 transitions. [2021-04-16 06:49:34,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:49:34,611 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:34,611 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:34,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-04-16 06:49:34,611 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:34,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:34,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1642709553, now seen corresponding path program 29 times [2021-04-16 06:49:34,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:34,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380839728] [2021-04-16 06:49:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:34,616 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:34,617 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:34,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:34,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:34,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:34,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:34,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:34,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:34,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:34,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:49:34,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:34,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:49:34,804 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-04-16 06:49:34,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:34,834 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-04-16 06:49:34,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:49:34,836 INFO L142 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-04-16 06:49:34,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:49:34,859 INFO L142 QuantifierPusher]: treesize reduction 29, result has 85.1 percent of original size [2021-04-16 06:49:34,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-04-16 06:49:34,942 INFO L142 QuantifierPusher]: treesize reduction 39, result has 89.3 percent of original size [2021-04-16 06:49:34,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-04-16 06:49:35,123 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 31 [2021-04-16 06:49:35,128 INFO L142 QuantifierPusher]: treesize reduction 68, result has 87.7 percent of original size [2021-04-16 06:49:35,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 485 [2021-04-16 06:49:35,328 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 42 [2021-04-16 06:49:35,334 INFO L142 QuantifierPusher]: treesize reduction 69, result has 88.9 percent of original size [2021-04-16 06:49:35,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 552 [2021-04-16 06:49:35,528 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 39 [2021-04-16 06:49:35,530 INFO L142 QuantifierPusher]: treesize reduction 40, result has 79.5 percent of original size [2021-04-16 06:49:35,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-04-16 06:49:35,626 INFO L142 QuantifierPusher]: treesize reduction 27, result has 56.5 percent of original size [2021-04-16 06:49:35,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:49:35,668 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:49:35,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:49:35,694 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 06:49:35,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:35,724 INFO L142 QuantifierPusher]: treesize reduction 35, result has 84.3 percent of original size [2021-04-16 06:49:35,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-04-16 06:49:35,818 INFO L142 QuantifierPusher]: treesize reduction 53, result has 66.5 percent of original size [2021-04-16 06:49:35,819 INFO L147 QuantifierPusher]: treesize reduction 8, result has 92.4 percent of original size 97 [2021-04-16 06:49:35,851 INFO L142 QuantifierPusher]: treesize reduction 63, result has 84.5 percent of original size [2021-04-16 06:49:35,853 INFO L147 QuantifierPusher]: treesize reduction 8, result has 97.7 percent of original size 336 [2021-04-16 06:49:35,963 INFO L142 QuantifierPusher]: treesize reduction 106, result has 74.7 percent of original size [2021-04-16 06:49:35,965 INFO L147 QuantifierPusher]: treesize reduction 8, result has 97.4 percent of original size 305 [2021-04-16 06:49:36,031 INFO L142 QuantifierPusher]: treesize reduction 106, result has 74.5 percent of original size [2021-04-16 06:49:36,034 INFO L147 QuantifierPusher]: treesize reduction 8, result has 97.4 percent of original size 302 [2021-04-16 06:49:36,038 INFO L142 QuantifierPusher]: treesize reduction 52, result has 48.0 percent of original size [2021-04-16 06:49:36,039 INFO L147 QuantifierPusher]: treesize reduction 8, result has 83.3 percent of original size 40 [2021-04-16 06:49:36,041 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 06:49:36,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:36,042 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:49:36,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:36,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:36,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:36,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:36,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:36,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:36,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380839728] [2021-04-16 06:49:36,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:36,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-04-16 06:49:36,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456427519] [2021-04-16 06:49:36,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-16 06:49:36,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:36,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-16 06:49:36,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:49:36,076 INFO L87 Difference]: Start difference. First operand 854 states and 986 transitions. Second operand has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:39,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:39,408 INFO L93 Difference]: Finished difference Result 1843 states and 2125 transitions. [2021-04-16 06:49:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:49:39,408 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 2 states have call successors, (3), 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 93 [2021-04-16 06:49:39,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:39,410 INFO L225 Difference]: With dead ends: 1843 [2021-04-16 06:49:39,410 INFO L226 Difference]: Without dead ends: 1707 [2021-04-16 06:49:39,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1599.6ms TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2021-04-16 06:49:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-04-16 06:49:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1196. [2021-04-16 06:49:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1191 states have (on average 1.1494542401343408) internal successors, (1369), 1191 states have internal predecessors, (1369), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1373 transitions. [2021-04-16 06:49:40,921 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1373 transitions. Word has length 93 [2021-04-16 06:49:40,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:40,921 INFO L480 AbstractCegarLoop]: Abstraction has 1196 states and 1373 transitions. [2021-04-16 06:49:40,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1373 transitions. [2021-04-16 06:49:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:49:40,923 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:40,923 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:40,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-04-16 06:49:40,923 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:40,923 INFO L82 PathProgramCache]: Analyzing trace with hash 221262611, now seen corresponding path program 30 times [2021-04-16 06:49:40,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:40,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010327398] [2021-04-16 06:49:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:40,927 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:40,928 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:41,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:41,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:41,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:41,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:41,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:41,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:41,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:41,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:49:41,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:41,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:49:41,123 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-04-16 06:49:41,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:49:41,158 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-04-16 06:49:41,159 INFO L147 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size 17 [2021-04-16 06:49:41,171 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size [2021-04-16 06:49:41,172 INFO L147 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-04-16 06:49:41,210 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-04-16 06:49:41,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:41,237 INFO L142 QuantifierPusher]: treesize reduction 114, result has 64.8 percent of original size [2021-04-16 06:49:41,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-04-16 06:49:41,346 INFO L142 QuantifierPusher]: treesize reduction 133, result has 61.9 percent of original size [2021-04-16 06:49:41,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-04-16 06:49:41,460 INFO L142 QuantifierPusher]: treesize reduction 24, result has 93.9 percent of original size [2021-04-16 06:49:41,463 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.6 percent of original size 361 [2021-04-16 06:49:41,552 INFO L142 QuantifierPusher]: treesize reduction 87, result has 87.8 percent of original size [2021-04-16 06:49:41,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 627 [2021-04-16 06:49:41,735 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 37 [2021-04-16 06:49:41,740 INFO L142 QuantifierPusher]: treesize reduction 106, result has 87.8 percent of original size [2021-04-16 06:49:41,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 763 [2021-04-16 06:49:41,914 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 43 [2021-04-16 06:49:41,928 INFO L142 QuantifierPusher]: treesize reduction 107, result has 88.6 percent of original size [2021-04-16 06:49:41,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 830 [2021-04-16 06:49:42,123 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 40 [2021-04-16 06:49:42,127 INFO L142 QuantifierPusher]: treesize reduction 42, result has 90.8 percent of original size [2021-04-16 06:49:42,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 416 [2021-04-16 06:49:42,228 INFO L142 QuantifierPusher]: treesize reduction 27, result has 56.5 percent of original size [2021-04-16 06:49:42,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:49:42,265 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:49:42,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:49:42,288 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 06:49:42,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:42,312 INFO L142 QuantifierPusher]: treesize reduction 22, result has 52.2 percent of original size [2021-04-16 06:49:42,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:42,342 INFO L142 QuantifierPusher]: treesize reduction 75, result has 81.3 percent of original size [2021-04-16 06:49:42,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-04-16 06:49:42,452 INFO L142 QuantifierPusher]: treesize reduction 51, result has 88.7 percent of original size [2021-04-16 06:49:42,454 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.8 percent of original size 392 [2021-04-16 06:49:42,507 INFO L142 QuantifierPusher]: treesize reduction 51, result has 88.8 percent of original size [2021-04-16 06:49:42,508 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.8 percent of original size 395 [2021-04-16 06:49:42,620 INFO L142 QuantifierPusher]: treesize reduction 105, result has 87.5 percent of original size [2021-04-16 06:49:42,624 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.8 percent of original size 729 [2021-04-16 06:49:42,846 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 60 [2021-04-16 06:49:42,849 INFO L142 QuantifierPusher]: treesize reduction 60, result has 85.1 percent of original size [2021-04-16 06:49:42,851 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.4 percent of original size 335 [2021-04-16 06:49:42,927 INFO L142 QuantifierPusher]: treesize reduction 113, result has 68.2 percent of original size [2021-04-16 06:49:42,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-04-16 06:49:42,937 INFO L142 QuantifierPusher]: treesize reduction 86, result has 74.5 percent of original size [2021-04-16 06:49:42,938 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.4 percent of original size 242 [2021-04-16 06:49:42,940 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:49:42,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:42,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:42,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:42,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:42,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:42,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010327398] [2021-04-16 06:49:42,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:42,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-04-16 06:49:42,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613471093] [2021-04-16 06:49:42,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-04-16 06:49:42,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:42,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-04-16 06:49:42,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:49:42,975 INFO L87 Difference]: Start difference. First operand 1196 states and 1373 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:48,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:48,467 INFO L93 Difference]: Finished difference Result 2741 states and 3177 transitions. [2021-04-16 06:49:48,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:49:48,467 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 2 states have call successors, (3), 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 93 [2021-04-16 06:49:48,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:48,469 INFO L225 Difference]: With dead ends: 2741 [2021-04-16 06:49:48,469 INFO L226 Difference]: Without dead ends: 2232 [2021-04-16 06:49:48,471 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2718.7ms TimeCoverageRelationStatistics Valid=280, Invalid=1360, Unknown=0, NotChecked=0, Total=1640 [2021-04-16 06:49:48,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2021-04-16 06:49:50,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 1577. [2021-04-16 06:49:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1572 states have (on average 1.1380407124681935) internal successors, (1789), 1572 states have internal predecessors, (1789), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 1793 transitions. [2021-04-16 06:49:50,699 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 1793 transitions. Word has length 93 [2021-04-16 06:49:50,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:50,700 INFO L480 AbstractCegarLoop]: Abstraction has 1577 states and 1793 transitions. [2021-04-16 06:49:50,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 1793 transitions. [2021-04-16 06:49:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:49:50,703 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:50,703 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:50,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-04-16 06:49:50,704 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:50,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1056215119, now seen corresponding path program 31 times [2021-04-16 06:49:50,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:50,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795070145] [2021-04-16 06:49:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:50,710 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:50,711 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:50,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:50,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:50,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:50,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:49:50,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:49:50,904 INFO L142 QuantifierPusher]: treesize reduction 36, result has 44.6 percent of original size [2021-04-16 06:49:50,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:49:50,936 INFO L142 QuantifierPusher]: treesize reduction 44, result has 36.2 percent of original size [2021-04-16 06:49:50,937 INFO L147 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size 17 [2021-04-16 06:49:50,946 INFO L142 QuantifierPusher]: treesize reduction 44, result has 38.9 percent of original size [2021-04-16 06:49:50,947 INFO L147 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-04-16 06:49:50,973 INFO L142 QuantifierPusher]: treesize reduction 43, result has 42.7 percent of original size [2021-04-16 06:49:50,974 INFO L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-04-16 06:49:51,008 INFO L142 QuantifierPusher]: treesize reduction 37, result has 88.2 percent of original size [2021-04-16 06:49:51,010 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.7 percent of original size 267 [2021-04-16 06:49:51,149 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2021-04-16 06:49:51,152 INFO L142 QuantifierPusher]: treesize reduction 59, result has 88.8 percent of original size [2021-04-16 06:49:51,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 467 [2021-04-16 06:49:51,264 INFO L142 QuantifierPusher]: treesize reduction 92, result has 89.5 percent of original size [2021-04-16 06:49:51,267 INFO L147 QuantifierPusher]: treesize reduction 19, result has 97.6 percent of original size 762 [2021-04-16 06:49:51,426 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 37 [2021-04-16 06:49:51,432 INFO L142 QuantifierPusher]: treesize reduction 93, result has 90.1 percent of original size [2021-04-16 06:49:51,436 INFO L147 QuantifierPusher]: treesize reduction 19, result has 97.8 percent of original size 832 [2021-04-16 06:49:51,608 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 34 [2021-04-16 06:49:51,611 INFO L142 QuantifierPusher]: treesize reduction 64, result has 87.6 percent of original size [2021-04-16 06:49:51,613 INFO L147 QuantifierPusher]: treesize reduction 19, result has 95.8 percent of original size 433 [2021-04-16 06:49:51,741 INFO L142 QuantifierPusher]: treesize reduction 61, result has 50.0 percent of original size [2021-04-16 06:49:51,742 INFO L147 QuantifierPusher]: treesize reduction 10, result has 83.6 percent of original size 51 [2021-04-16 06:49:51,786 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-04-16 06:49:51,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:49:51,787 INFO L142 QuantifierPusher]: treesize reduction 17, result has 56.4 percent of original size [2021-04-16 06:49:51,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:49:51,816 INFO L142 QuantifierPusher]: treesize reduction 17, result has 59.5 percent of original size [2021-04-16 06:49:51,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:49:51,851 INFO L142 QuantifierPusher]: treesize reduction 89, result has 78.0 percent of original size [2021-04-16 06:49:51,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 316 [2021-04-16 06:49:51,967 INFO L142 QuantifierPusher]: treesize reduction 61, result has 86.7 percent of original size [2021-04-16 06:49:51,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 396 [2021-04-16 06:49:52,080 INFO L142 QuantifierPusher]: treesize reduction 60, result has 91.5 percent of original size [2021-04-16 06:49:52,082 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.6 percent of original size 639 [2021-04-16 06:49:52,268 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2021-04-16 06:49:52,273 INFO L142 QuantifierPusher]: treesize reduction 112, result has 84.4 percent of original size [2021-04-16 06:49:52,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 604 [2021-04-16 06:49:52,419 INFO L142 QuantifierPusher]: treesize reduction 147, result has 79.4 percent of original size [2021-04-16 06:49:52,422 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.4 percent of original size 556 [2021-04-16 06:49:52,428 INFO L142 QuantifierPusher]: treesize reduction 105, result has 73.5 percent of original size [2021-04-16 06:49:52,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-04-16 06:49:52,434 INFO L142 QuantifierPusher]: treesize reduction 88, result has 77.1 percent of original size [2021-04-16 06:49:52,435 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.0 percent of original size 288 [2021-04-16 06:49:52,438 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:49:52,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:52,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:52,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:52,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:52,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:52,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:52,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795070145] [2021-04-16 06:49:52,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:52,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:49:52,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961809240] [2021-04-16 06:49:52,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:49:52,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:52,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:49:52,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:49:52,480 INFO L87 Difference]: Start difference. First operand 1577 states and 1793 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:57,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:57,052 INFO L93 Difference]: Finished difference Result 2606 states and 3001 transitions. [2021-04-16 06:49:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-16 06:49:57,052 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 2 states have call successors, (3), 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 93 [2021-04-16 06:49:57,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:57,055 INFO L225 Difference]: With dead ends: 2606 [2021-04-16 06:49:57,056 INFO L226 Difference]: Without dead ends: 2124 [2021-04-16 06:49:57,058 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2028.1ms TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2021-04-16 06:49:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2021-04-16 06:49:59,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1876. [2021-04-16 06:49:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1871 states have (on average 1.1320149652592197) internal successors, (2118), 1871 states have internal predecessors, (2118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2122 transitions. [2021-04-16 06:49:59,777 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2122 transitions. Word has length 93 [2021-04-16 06:49:59,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:59,777 INFO L480 AbstractCegarLoop]: Abstraction has 1876 states and 2122 transitions. [2021-04-16 06:49:59,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2122 transitions. [2021-04-16 06:49:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:49:59,780 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:59,780 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:59,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-04-16 06:49:59,780 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:59,780 INFO L82 PathProgramCache]: Analyzing trace with hash 862436115, now seen corresponding path program 32 times [2021-04-16 06:49:59,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:59,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033852553] [2021-04-16 06:49:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:59,784 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:59,785 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:59,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:59,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:59,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:49:59,962 INFO L142 QuantifierPusher]: treesize reduction 13, result has 97.1 percent of original size [2021-04-16 06:49:59,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 440 [2021-04-16 06:50:00,066 INFO L142 QuantifierPusher]: treesize reduction 39, result has 90.6 percent of original size [2021-04-16 06:50:00,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 378 [2021-04-16 06:50:00,085 INFO L142 QuantifierPusher]: treesize reduction 10, result has 56.5 percent of original size [2021-04-16 06:50:00,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:50:00,101 INFO L142 QuantifierPusher]: treesize reduction 25, result has 53.7 percent of original size [2021-04-16 06:50:00,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:50:00,137 INFO L142 QuantifierPusher]: treesize reduction 39, result has 30.4 percent of original size [2021-04-16 06:50:00,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:50:00,139 INFO L142 QuantifierPusher]: treesize reduction 39, result has 33.9 percent of original size [2021-04-16 06:50:00,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:50:00,160 INFO L142 QuantifierPusher]: treesize reduction 40, result has 45.2 percent of original size [2021-04-16 06:50:00,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:50:00,195 INFO L142 QuantifierPusher]: treesize reduction 37, result has 89.7 percent of original size [2021-04-16 06:50:00,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-04-16 06:50:00,352 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2021-04-16 06:50:00,356 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:50:00,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 346 [2021-04-16 06:50:00,450 INFO L142 QuantifierPusher]: treesize reduction 55, result has 87.5 percent of original size [2021-04-16 06:50:00,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-04-16 06:50:00,485 INFO L142 QuantifierPusher]: treesize reduction 109, result has 85.7 percent of original size [2021-04-16 06:50:00,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 652 [2021-04-16 06:50:00,678 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 37 [2021-04-16 06:50:00,684 INFO L142 QuantifierPusher]: treesize reduction 128, result has 86.0 percent of original size [2021-04-16 06:50:00,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 786 [2021-04-16 06:50:00,860 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 43 [2021-04-16 06:50:00,866 INFO L142 QuantifierPusher]: treesize reduction 120, result has 87.8 percent of original size [2021-04-16 06:50:00,869 INFO L147 QuantifierPusher]: treesize reduction 9, result has 99.0 percent of original size 856 [2021-04-16 06:50:01,043 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 42 [2021-04-16 06:50:01,047 INFO L142 QuantifierPusher]: treesize reduction 66, result has 87.0 percent of original size [2021-04-16 06:50:01,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 442 [2021-04-16 06:50:01,145 INFO L142 QuantifierPusher]: treesize reduction 58, result has 45.8 percent of original size [2021-04-16 06:50:01,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:50:01,183 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-04-16 06:50:01,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:50:01,206 INFO L142 QuantifierPusher]: treesize reduction 27, result has 44.9 percent of original size [2021-04-16 06:50:01,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:50:01,231 INFO L142 QuantifierPusher]: treesize reduction 32, result has 43.9 percent of original size [2021-04-16 06:50:01,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:50:01,259 INFO L142 QuantifierPusher]: treesize reduction 94, result has 77.2 percent of original size [2021-04-16 06:50:01,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 319 [2021-04-16 06:50:01,367 INFO L142 QuantifierPusher]: treesize reduction 70, result has 84.9 percent of original size [2021-04-16 06:50:01,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 395 [2021-04-16 06:50:01,418 INFO L142 QuantifierPusher]: treesize reduction 70, result has 85.0 percent of original size [2021-04-16 06:50:01,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 398 [2021-04-16 06:50:01,532 INFO L142 QuantifierPusher]: treesize reduction 117, result has 86.4 percent of original size [2021-04-16 06:50:01,534 INFO L147 QuantifierPusher]: treesize reduction 7, result has 99.1 percent of original size 734 [2021-04-16 06:50:01,748 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 61 [2021-04-16 06:50:01,751 INFO L142 QuantifierPusher]: treesize reduction 70, result has 83.1 percent of original size [2021-04-16 06:50:01,753 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.4 percent of original size 336 [2021-04-16 06:50:01,839 INFO L142 QuantifierPusher]: treesize reduction 123, result has 66.3 percent of original size [2021-04-16 06:50:01,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-04-16 06:50:01,847 INFO L142 QuantifierPusher]: treesize reduction 96, result has 72.3 percent of original size [2021-04-16 06:50:01,849 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.4 percent of original size 242 [2021-04-16 06:50:01,851 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:50:01,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:01,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:01,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:01,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:01,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:01,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:01,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033852553] [2021-04-16 06:50:01,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:01,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:50:01,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938498481] [2021-04-16 06:50:01,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:50:01,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:01,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:50:01,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:50:01,891 INFO L87 Difference]: Start difference. First operand 1876 states and 2122 transitions. Second operand has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 23 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:07,381 INFO L93 Difference]: Finished difference Result 2271 states and 2578 transitions. [2021-04-16 06:50:07,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:50:07,381 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 23 states have internal predecessors, (73), 2 states have call successors, (3), 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 93 [2021-04-16 06:50:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:07,383 INFO L225 Difference]: With dead ends: 2271 [2021-04-16 06:50:07,383 INFO L226 Difference]: Without dead ends: 1822 [2021-04-16 06:50:07,384 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 2823.1ms TimeCoverageRelationStatistics Valid=295, Invalid=1345, Unknown=0, NotChecked=0, Total=1640 [2021-04-16 06:50:07,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2021-04-16 06:50:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1606. [2021-04-16 06:50:10,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1601 states have (on average 1.1261711430356027) internal successors, (1803), 1601 states have internal predecessors, (1803), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1807 transitions. [2021-04-16 06:50:10,094 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1807 transitions. Word has length 93 [2021-04-16 06:50:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:10,094 INFO L480 AbstractCegarLoop]: Abstraction has 1606 states and 1807 transitions. [2021-04-16 06:50:10,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 23 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1807 transitions. [2021-04-16 06:50:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:50:10,097 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:10,097 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:10,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-04-16 06:50:10,097 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:10,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1261895563, now seen corresponding path program 33 times [2021-04-16 06:50:10,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:10,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951020776] [2021-04-16 06:50:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:10,103 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:10,104 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:10,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:10,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:10,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:10,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:10,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:10,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:50:10,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:10,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:50:10,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:10,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:50:10,309 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.9 percent of original size [2021-04-16 06:50:10,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:50:10,344 INFO L142 QuantifierPusher]: treesize reduction 29, result has 37.0 percent of original size [2021-04-16 06:50:10,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:50:10,346 INFO L142 QuantifierPusher]: treesize reduction 29, result has 40.8 percent of original size [2021-04-16 06:50:10,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:50:10,374 INFO L142 QuantifierPusher]: treesize reduction 19, result has 91.1 percent of original size [2021-04-16 06:50:10,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-04-16 06:50:10,505 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2021-04-16 06:50:10,508 INFO L142 QuantifierPusher]: treesize reduction 35, result has 84.6 percent of original size [2021-04-16 06:50:10,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-04-16 06:50:10,571 INFO L142 QuantifierPusher]: treesize reduction 35, result has 77.8 percent of original size [2021-04-16 06:50:10,572 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.3 percent of original size 116 [2021-04-16 06:50:10,597 INFO L142 QuantifierPusher]: treesize reduction 98, result has 81.2 percent of original size [2021-04-16 06:50:10,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 424 [2021-04-16 06:50:10,768 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 41 [2021-04-16 06:50:10,771 INFO L142 QuantifierPusher]: treesize reduction 115, result has 82.9 percent of original size [2021-04-16 06:50:10,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 558 [2021-04-16 06:50:10,893 INFO L142 QuantifierPusher]: treesize reduction 116, result has 84.3 percent of original size [2021-04-16 06:50:10,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 625 [2021-04-16 06:50:11,018 INFO L142 QuantifierPusher]: treesize reduction 51, result has 77.0 percent of original size [2021-04-16 06:50:11,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-04-16 06:50:11,076 INFO L142 QuantifierPusher]: treesize reduction 37, result has 61.5 percent of original size [2021-04-16 06:50:11,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 06:50:11,126 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:50:11,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:50:11,149 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 06:50:11,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:11,176 INFO L142 QuantifierPusher]: treesize reduction 57, result has 89.0 percent of original size [2021-04-16 06:50:11,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 460 [2021-04-16 06:50:11,298 INFO L142 QuantifierPusher]: treesize reduction 71, result has 85.9 percent of original size [2021-04-16 06:50:11,300 INFO L147 QuantifierPusher]: treesize reduction 15, result has 96.5 percent of original size 418 [2021-04-16 06:50:11,391 INFO L142 QuantifierPusher]: treesize reduction 71, result has 86.0 percent of original size [2021-04-16 06:50:11,394 INFO L147 QuantifierPusher]: treesize reduction 15, result has 96.6 percent of original size 421 [2021-04-16 06:50:11,494 INFO L142 QuantifierPusher]: treesize reduction 127, result has 85.8 percent of original size [2021-04-16 06:50:11,497 INFO L147 QuantifierPusher]: treesize reduction 15, result has 98.0 percent of original size 753 [2021-04-16 06:50:11,714 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 56 [2021-04-16 06:50:11,719 INFO L142 QuantifierPusher]: treesize reduction 141, result has 81.9 percent of original size [2021-04-16 06:50:11,722 INFO L147 QuantifierPusher]: treesize reduction 15, result has 97.6 percent of original size 622 [2021-04-16 06:50:11,848 INFO L142 QuantifierPusher]: treesize reduction 141, result has 81.8 percent of original size [2021-04-16 06:50:11,851 INFO L147 QuantifierPusher]: treesize reduction 15, result has 97.6 percent of original size 619 [2021-04-16 06:50:11,857 INFO L142 QuantifierPusher]: treesize reduction 70, result has 84.3 percent of original size [2021-04-16 06:50:11,859 INFO L147 QuantifierPusher]: treesize reduction 15, result has 96.0 percent of original size 361 [2021-04-16 06:50:11,862 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 06:50:11,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:11,863 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:50:11,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:11,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:11,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:11,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:11,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:11,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951020776] [2021-04-16 06:50:11,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:11,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:50:11,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261033524] [2021-04-16 06:50:11,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:50:11,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:11,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:50:11,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:50:11,897 INFO L87 Difference]: Start difference. First operand 1606 states and 1807 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:12,464 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-04-16 06:50:16,204 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2021-04-16 06:50:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:17,602 INFO L93 Difference]: Finished difference Result 2202 states and 2464 transitions. [2021-04-16 06:50:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:50:17,603 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 2 states have call successors, (3), 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 93 [2021-04-16 06:50:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:17,605 INFO L225 Difference]: With dead ends: 2202 [2021-04-16 06:50:17,605 INFO L226 Difference]: Without dead ends: 2032 [2021-04-16 06:50:17,606 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 2501.4ms TimeCoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2021-04-16 06:50:17,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2021-04-16 06:50:20,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1874. [2021-04-16 06:50:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1869 states have (on average 1.1166399143927235) internal successors, (2087), 1869 states have internal predecessors, (2087), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2091 transitions. [2021-04-16 06:50:20,530 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2091 transitions. Word has length 93 [2021-04-16 06:50:20,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:20,530 INFO L480 AbstractCegarLoop]: Abstraction has 1874 states and 2091 transitions. [2021-04-16 06:50:20,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2091 transitions. [2021-04-16 06:50:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:50:20,533 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:20,533 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:20,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-04-16 06:50:20,533 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:20,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1038747787, now seen corresponding path program 34 times [2021-04-16 06:50:20,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:20,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175001313] [2021-04-16 06:50:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:20,546 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:20,547 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:20,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:20,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:20,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:20,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:20,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:20,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:50:20,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:20,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:50:20,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:20,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:50:20,717 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-04-16 06:50:20,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 06:50:20,753 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-04-16 06:50:20,754 INFO L147 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size 17 [2021-04-16 06:50:20,765 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size [2021-04-16 06:50:20,766 INFO L147 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-04-16 06:50:20,801 INFO L142 QuantifierPusher]: treesize reduction 18, result has 90.7 percent of original size [2021-04-16 06:50:20,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-04-16 06:50:20,907 INFO L142 QuantifierPusher]: treesize reduction 43, result has 89.8 percent of original size [2021-04-16 06:50:20,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 380 [2021-04-16 06:50:21,055 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 30 [2021-04-16 06:50:21,058 INFO L142 QuantifierPusher]: treesize reduction 75, result has 86.5 percent of original size [2021-04-16 06:50:21,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 481 [2021-04-16 06:50:21,204 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 41 [2021-04-16 06:50:21,208 INFO L142 QuantifierPusher]: treesize reduction 76, result has 87.9 percent of original size [2021-04-16 06:50:21,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 551 [2021-04-16 06:50:21,370 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 39 [2021-04-16 06:50:21,372 INFO L142 QuantifierPusher]: treesize reduction 39, result has 80.9 percent of original size [2021-04-16 06:50:21,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-04-16 06:50:21,443 INFO L142 QuantifierPusher]: treesize reduction 31, result has 45.6 percent of original size [2021-04-16 06:50:21,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:50:21,469 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-04-16 06:50:21,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:50:21,492 INFO L142 QuantifierPusher]: treesize reduction 17, result has 56.4 percent of original size [2021-04-16 06:50:21,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:50:21,516 INFO L142 QuantifierPusher]: treesize reduction 21, result has 89.8 percent of original size [2021-04-16 06:50:21,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:50:21,607 INFO L142 QuantifierPusher]: treesize reduction 46, result has 68.5 percent of original size [2021-04-16 06:50:21,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:50:21,638 INFO L142 QuantifierPusher]: treesize reduction 47, result has 88.2 percent of original size [2021-04-16 06:50:21,640 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.4 percent of original size 341 [2021-04-16 06:50:21,772 INFO L142 QuantifierPusher]: treesize reduction 90, result has 77.8 percent of original size [2021-04-16 06:50:21,774 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.1 percent of original size 306 [2021-04-16 06:50:21,853 INFO L142 QuantifierPusher]: treesize reduction 99, result has 75.3 percent of original size [2021-04-16 06:50:21,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 302 [2021-04-16 06:50:21,858 INFO L142 QuantifierPusher]: treesize reduction 38, result has 55.3 percent of original size [2021-04-16 06:50:21,859 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.9 percent of original size 38 [2021-04-16 06:50:21,861 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 06:50:21,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:21,862 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:50:21,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:21,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:21,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:21,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:21,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:21,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:21,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175001313] [2021-04-16 06:50:21,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:21,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-04-16 06:50:21,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123002411] [2021-04-16 06:50:21,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-16 06:50:21,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:21,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-16 06:50:21,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:50:21,901 INFO L87 Difference]: Start difference. First operand 1874 states and 2091 transitions. Second operand has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:26,555 INFO L93 Difference]: Finished difference Result 2162 states and 2405 transitions. [2021-04-16 06:50:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:50:26,556 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 2 states have call successors, (3), 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 93 [2021-04-16 06:50:26,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:26,559 INFO L225 Difference]: With dead ends: 2162 [2021-04-16 06:50:26,559 INFO L226 Difference]: Without dead ends: 2029 [2021-04-16 06:50:26,559 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1642.7ms TimeCoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:50:26,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-04-16 06:50:29,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1871. [2021-04-16 06:50:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1866 states have (on average 1.1114683815648445) internal successors, (2074), 1866 states have internal predecessors, (2074), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2078 transitions. [2021-04-16 06:50:29,543 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2078 transitions. Word has length 93 [2021-04-16 06:50:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:29,543 INFO L480 AbstractCegarLoop]: Abstraction has 1871 states and 2078 transitions. [2021-04-16 06:50:29,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2078 transitions. [2021-04-16 06:50:29,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:50:29,546 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:29,546 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:29,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-04-16 06:50:29,546 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:29,547 INFO L82 PathProgramCache]: Analyzing trace with hash 50957903, now seen corresponding path program 35 times [2021-04-16 06:50:29,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:29,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056184140] [2021-04-16 06:50:29,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:29,552 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:29,554 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:29,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:29,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:29,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:29,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:29,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:29,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:50:29,730 INFO L142 QuantifierPusher]: treesize reduction 15, result has 91.1 percent of original size [2021-04-16 06:50:29,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-04-16 06:50:29,771 INFO L142 QuantifierPusher]: treesize reduction 15, result has 91.3 percent of original size [2021-04-16 06:50:29,772 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.5 percent of original size 150 [2021-04-16 06:50:29,819 INFO L142 QuantifierPusher]: treesize reduction 14, result has 86.9 percent of original size [2021-04-16 06:50:29,821 INFO L147 QuantifierPusher]: treesize reduction 7, result has 92.5 percent of original size 86 [2021-04-16 06:50:29,834 INFO L142 QuantifierPusher]: treesize reduction 70, result has 85.1 percent of original size [2021-04-16 06:50:29,836 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.3 percent of original size 394 [2021-04-16 06:50:30,017 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 39 [2021-04-16 06:50:30,022 INFO L142 QuantifierPusher]: treesize reduction 65, result has 89.6 percent of original size [2021-04-16 06:50:30,025 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.7 percent of original size 552 [2021-04-16 06:50:30,174 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 39 [2021-04-16 06:50:30,178 INFO L142 QuantifierPusher]: treesize reduction 66, result has 90.5 percent of original size [2021-04-16 06:50:30,181 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.9 percent of original size 622 [2021-04-16 06:50:30,319 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 37 [2021-04-16 06:50:30,321 INFO L142 QuantifierPusher]: treesize reduction 23, result has 86.6 percent of original size [2021-04-16 06:50:30,323 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.3 percent of original size 142 [2021-04-16 06:50:30,385 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-04-16 06:50:30,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:50:30,402 INFO L142 QuantifierPusher]: treesize reduction 17, result has 56.4 percent of original size [2021-04-16 06:50:30,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:50:30,422 INFO L142 QuantifierPusher]: treesize reduction 30, result has 94.3 percent of original size [2021-04-16 06:50:30,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 493 [2021-04-16 06:50:30,459 INFO L142 QuantifierPusher]: treesize reduction 47, result has 90.3 percent of original size [2021-04-16 06:50:30,462 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.0 percent of original size 431 [2021-04-16 06:50:30,494 INFO L142 QuantifierPusher]: treesize reduction 47, result has 90.4 percent of original size [2021-04-16 06:50:30,496 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.0 percent of original size 434 [2021-04-16 06:50:30,611 INFO L142 QuantifierPusher]: treesize reduction 103, result has 88.3 percent of original size [2021-04-16 06:50:30,614 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.8 percent of original size 768 [2021-04-16 06:50:30,852 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 61 [2021-04-16 06:50:30,857 INFO L142 QuantifierPusher]: treesize reduction 126, result has 83.4 percent of original size [2021-04-16 06:50:30,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 633 [2021-04-16 06:50:30,975 INFO L142 QuantifierPusher]: treesize reduction 126, result has 83.3 percent of original size [2021-04-16 06:50:30,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 629 [2021-04-16 06:50:30,983 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.7 percent of original size [2021-04-16 06:50:30,986 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.6 percent of original size 369 [2021-04-16 06:50:30,989 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 06:50:30,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:30,990 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:50:30,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:30,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:30,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:31,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:31,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:31,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:31,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056184140] [2021-04-16 06:50:31,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:31,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:50:31,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47676122] [2021-04-16 06:50:31,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:50:31,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:31,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:50:31,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:50:31,047 INFO L87 Difference]: Start difference. First operand 1871 states and 2078 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:31,621 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2021-04-16 06:50:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:35,842 INFO L93 Difference]: Finished difference Result 2507 states and 2791 transitions. [2021-04-16 06:50:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:50:35,843 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 2 states have call successors, (3), 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 93 [2021-04-16 06:50:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:35,846 INFO L225 Difference]: With dead ends: 2507 [2021-04-16 06:50:35,846 INFO L226 Difference]: Without dead ends: 2373 [2021-04-16 06:50:35,847 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1531.5ms TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:50:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2021-04-16 06:50:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2132. [2021-04-16 06:50:39,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 2127 states have (on average 1.1156558533145275) internal successors, (2373), 2127 states have internal predecessors, (2373), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2377 transitions. [2021-04-16 06:50:39,651 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2377 transitions. Word has length 93 [2021-04-16 06:50:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:39,652 INFO L480 AbstractCegarLoop]: Abstraction has 2132 states and 2377 transitions. [2021-04-16 06:50:39,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2377 transitions. [2021-04-16 06:50:39,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:50:39,655 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:39,655 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:39,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-04-16 06:50:39,655 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:39,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:39,655 INFO L82 PathProgramCache]: Analyzing trace with hash -528878317, now seen corresponding path program 36 times [2021-04-16 06:50:39,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:39,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381393904] [2021-04-16 06:50:39,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:39,660 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:39,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:39,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:39,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:39,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:39,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:39,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:39,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:50:39,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:39,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:50:39,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:39,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:50:39,873 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size [2021-04-16 06:50:39,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:50:39,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 89.0 percent of original size [2021-04-16 06:50:39,916 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size 65 [2021-04-16 06:50:39,930 INFO L142 QuantifierPusher]: treesize reduction 18, result has 94.3 percent of original size [2021-04-16 06:50:39,932 INFO L147 QuantifierPusher]: treesize reduction 8, result has 97.3 percent of original size 288 [2021-04-16 06:50:39,995 INFO L142 QuantifierPusher]: treesize reduction 97, result has 78.2 percent of original size [2021-04-16 06:50:39,997 INFO L147 QuantifierPusher]: treesize reduction 8, result has 97.7 percent of original size 339 [2021-04-16 06:50:40,059 INFO L142 QuantifierPusher]: treesize reduction 45, result has 90.8 percent of original size [2021-04-16 06:50:40,061 INFO L147 QuantifierPusher]: treesize reduction 8, result has 98.2 percent of original size 438 [2021-04-16 06:50:40,093 INFO L142 QuantifierPusher]: treesize reduction 99, result has 87.8 percent of original size [2021-04-16 06:50:40,098 INFO L147 QuantifierPusher]: treesize reduction 8, result has 98.9 percent of original size 706 [2021-04-16 06:50:40,263 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 31 [2021-04-16 06:50:40,268 INFO L142 QuantifierPusher]: treesize reduction 118, result has 87.8 percent of original size [2021-04-16 06:50:40,271 INFO L147 QuantifierPusher]: treesize reduction 8, result has 99.1 percent of original size 842 [2021-04-16 06:50:40,451 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 40 [2021-04-16 06:50:40,456 INFO L142 QuantifierPusher]: treesize reduction 119, result has 88.5 percent of original size [2021-04-16 06:50:40,460 INFO L147 QuantifierPusher]: treesize reduction 8, result has 99.1 percent of original size 909 [2021-04-16 06:50:40,639 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 37 [2021-04-16 06:50:40,643 INFO L142 QuantifierPusher]: treesize reduction 54, result has 90.3 percent of original size [2021-04-16 06:50:40,645 INFO L147 QuantifierPusher]: treesize reduction 8, result has 98.4 percent of original size 495 [2021-04-16 06:50:40,753 INFO L142 QuantifierPusher]: treesize reduction 31, result has 73.5 percent of original size [2021-04-16 06:50:40,754 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.7 percent of original size 78 [2021-04-16 06:50:40,797 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 06:50:40,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:50:40,818 INFO L142 QuantifierPusher]: treesize reduction 25, result has 89.1 percent of original size [2021-04-16 06:50:40,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-04-16 06:50:40,892 INFO L142 QuantifierPusher]: treesize reduction 52, result has 86.4 percent of original size [2021-04-16 06:50:40,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 331 [2021-04-16 06:50:40,935 INFO L142 QuantifierPusher]: treesize reduction 52, result has 86.6 percent of original size [2021-04-16 06:50:40,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-04-16 06:50:41,023 INFO L142 QuantifierPusher]: treesize reduction 108, result has 86.0 percent of original size [2021-04-16 06:50:41,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 666 [2021-04-16 06:50:41,229 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 53 [2021-04-16 06:50:41,234 INFO L142 QuantifierPusher]: treesize reduction 122, result has 81.4 percent of original size [2021-04-16 06:50:41,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 535 [2021-04-16 06:50:41,349 INFO L142 QuantifierPusher]: treesize reduction 122, result has 81.3 percent of original size [2021-04-16 06:50:41,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 532 [2021-04-16 06:50:41,357 INFO L142 QuantifierPusher]: treesize reduction 97, result has 70.2 percent of original size [2021-04-16 06:50:41,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-04-16 06:50:41,361 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 06:50:41,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:41,364 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:50:41,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:41,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:41,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:41,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:41,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:41,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:41,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381393904] [2021-04-16 06:50:41,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:41,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-04-16 06:50:41,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396405234] [2021-04-16 06:50:41,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-16 06:50:41,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:41,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-16 06:50:41,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:50:41,396 INFO L87 Difference]: Start difference. First operand 2132 states and 2377 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 19 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:46,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:46,761 INFO L93 Difference]: Finished difference Result 2674 states and 2948 transitions. [2021-04-16 06:50:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:50:46,763 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 19 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 93 [2021-04-16 06:50:46,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:46,766 INFO L225 Difference]: With dead ends: 2674 [2021-04-16 06:50:46,766 INFO L226 Difference]: Without dead ends: 2404 [2021-04-16 06:50:46,767 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1906.5ms TimeCoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:50:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2021-04-16 06:50:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2098. [2021-04-16 06:50:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2093 states have (on average 1.109412326803631) internal successors, (2322), 2093 states have internal predecessors, (2322), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2326 transitions. [2021-04-16 06:50:49,643 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2326 transitions. Word has length 93 [2021-04-16 06:50:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:49,644 INFO L480 AbstractCegarLoop]: Abstraction has 2098 states and 2326 transitions. [2021-04-16 06:50:49,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 19 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2326 transitions. [2021-04-16 06:50:49,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-04-16 06:50:49,646 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:49,646 INFO L519 BasicCegarLoop]: trace histogram [13, 12, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:49,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-04-16 06:50:49,646 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:49,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:49,646 INFO L82 PathProgramCache]: Analyzing trace with hash -102388934, now seen corresponding path program 37 times [2021-04-16 06:50:49,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:49,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246829777] [2021-04-16 06:50:49,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:49,650 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:49,651 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:49,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:49,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:49,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:49,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:50:49,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:50:49,857 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:50:49,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:50:49,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:49,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:49,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:49,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246829777] [2021-04-16 06:50:49,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:49,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:50:49,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711525543] [2021-04-16 06:50:49,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:50:49,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:49,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:50:49,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:50:49,946 INFO L87 Difference]: Start difference. First operand 2098 states and 2326 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:04,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:04,197 INFO L93 Difference]: Finished difference Result 8016 states and 9259 transitions. [2021-04-16 06:51:04,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:51:04,199 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 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 93 [2021-04-16 06:51:04,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:04,208 INFO L225 Difference]: With dead ends: 8016 [2021-04-16 06:51:04,208 INFO L226 Difference]: Without dead ends: 7921 [2021-04-16 06:51:04,211 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 275.4ms TimeCoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:51:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7921 states. [2021-04-16 06:51:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7921 to 2098. [2021-04-16 06:51:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2093 states have (on average 1.109412326803631) internal successors, (2322), 2093 states have internal predecessors, (2322), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2326 transitions. [2021-04-16 06:51:07,712 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2326 transitions. Word has length 93 [2021-04-16 06:51:07,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:07,712 INFO L480 AbstractCegarLoop]: Abstraction has 2098 states and 2326 transitions. [2021-04-16 06:51:07,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:07,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2326 transitions. [2021-04-16 06:51:07,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-04-16 06:51:07,715 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:07,715 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 5, 5, 4, 4, 4, 3, 3, 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, 1] [2021-04-16 06:51:07,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-04-16 06:51:07,715 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:07,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:07,715 INFO L82 PathProgramCache]: Analyzing trace with hash -291944894, now seen corresponding path program 38 times [2021-04-16 06:51:07,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:07,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905625334] [2021-04-16 06:51:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:07,721 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:07,722 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:07,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:07,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:51:07,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:07,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:07,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:07,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:07,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:07,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:07,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:07,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:07,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:51:07,882 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-04-16 06:51:07,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:51:07,926 INFO L142 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-04-16 06:51:07,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:07,952 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:51:07,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:51:07,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:07,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:08,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:08,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:08,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:08,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905625334] [2021-04-16 06:51:08,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:08,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:51:08,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434973923] [2021-04-16 06:51:08,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:51:08,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:08,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:51:08,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:51:08,034 INFO L87 Difference]: Start difference. First operand 2098 states and 2326 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 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) [2021-04-16 06:51:18,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:18,327 INFO L93 Difference]: Finished difference Result 5793 states and 6636 transitions. [2021-04-16 06:51:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:51:18,329 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 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 94 [2021-04-16 06:51:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:18,337 INFO L225 Difference]: With dead ends: 5793 [2021-04-16 06:51:18,337 INFO L226 Difference]: Without dead ends: 5611 [2021-04-16 06:51:18,339 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 328.5ms TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:51:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2021-04-16 06:51:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 2098. [2021-04-16 06:51:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2093 states have (on average 1.109412326803631) internal successors, (2322), 2093 states have internal predecessors, (2322), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2326 transitions. [2021-04-16 06:51:21,770 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2326 transitions. Word has length 94 [2021-04-16 06:51:21,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:21,770 INFO L480 AbstractCegarLoop]: Abstraction has 2098 states and 2326 transitions. [2021-04-16 06:51:21,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 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) [2021-04-16 06:51:21,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2326 transitions. [2021-04-16 06:51:21,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-04-16 06:51:21,773 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:21,773 INFO L519 BasicCegarLoop]: trace histogram [18, 17, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:21,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-04-16 06:51:21,773 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:21,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:21,774 INFO L82 PathProgramCache]: Analyzing trace with hash 955226037, now seen corresponding path program 7 times [2021-04-16 06:51:21,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:21,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445151575] [2021-04-16 06:51:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:21,780 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:21,781 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:21,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:21,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:51:21,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:21,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:22,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:22,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:22,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:22,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:22,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:22,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:22,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:22,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:22,149 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 06:51:22,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:51:22,187 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-04-16 06:51:22,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:51:22,188 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:51:22,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:51:22,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:22,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:22,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:22,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:22,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445151575] [2021-04-16 06:51:22,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:22,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:51:22,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051389578] [2021-04-16 06:51:22,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:51:22,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:22,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:51:22,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:51:22,271 INFO L87 Difference]: Start difference. First operand 2098 states and 2326 transitions. Second operand has 22 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) [2021-04-16 06:51:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:43,426 INFO L93 Difference]: Finished difference Result 11286 states and 13111 transitions. [2021-04-16 06:51:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:51:43,427 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 94 [2021-04-16 06:51:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:43,446 INFO L225 Difference]: With dead ends: 11286 [2021-04-16 06:51:43,446 INFO L226 Difference]: Without dead ends: 11219 [2021-04-16 06:51:43,451 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 414.5ms TimeCoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:51:43,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11219 states. [2021-04-16 06:51:46,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11219 to 2100. [2021-04-16 06:51:46,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2095 states have (on average 1.1097852028639619) internal successors, (2325), 2095 states have internal predecessors, (2325), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2329 transitions. [2021-04-16 06:51:46,932 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2329 transitions. Word has length 94 [2021-04-16 06:51:46,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:46,932 INFO L480 AbstractCegarLoop]: Abstraction has 2100 states and 2329 transitions. [2021-04-16 06:51:46,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 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) [2021-04-16 06:51:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2329 transitions. [2021-04-16 06:51:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-04-16 06:51:46,936 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:46,936 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:46,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-04-16 06:51:46,936 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:46,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:46,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1595514260, now seen corresponding path program 39 times [2021-04-16 06:51:46,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:46,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061897186] [2021-04-16 06:51:46,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:46,943 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:46,945 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:46,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:46,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:46,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:46,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:51:46,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:46,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:46,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:46,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:47,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:47,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:47,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:47,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:47,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:47,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:51:47,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:47,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:51:47,057 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:51:47,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:51:47,091 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:51:47,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:51:47,124 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:51:47,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:51:47,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:47,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:47,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:47,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:47,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:47,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061897186] [2021-04-16 06:51:47,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:47,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:51:47,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558446188] [2021-04-16 06:51:47,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:51:47,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:47,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:51:47,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:51:47,188 INFO L87 Difference]: Start difference. First operand 2100 states and 2329 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:53,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:53,889 INFO L93 Difference]: Finished difference Result 3574 states and 4040 transitions. [2021-04-16 06:51:53,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:51:53,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 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 95 [2021-04-16 06:51:53,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:53,896 INFO L225 Difference]: With dead ends: 3574 [2021-04-16 06:51:53,896 INFO L226 Difference]: Without dead ends: 3312 [2021-04-16 06:51:53,898 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 296.5ms TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:51:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2021-04-16 06:51:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 2269. [2021-04-16 06:51:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2264 states have (on average 1.1130742049469964) internal successors, (2520), 2264 states have internal predecessors, (2520), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 2524 transitions. [2021-04-16 06:51:57,782 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 2524 transitions. Word has length 95 [2021-04-16 06:51:57,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:57,783 INFO L480 AbstractCegarLoop]: Abstraction has 2269 states and 2524 transitions. [2021-04-16 06:51:57,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:57,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 2524 transitions. [2021-04-16 06:51:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-04-16 06:51:57,786 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:57,787 INFO L519 BasicCegarLoop]: trace histogram [14, 13, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:57,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-04-16 06:51:57,787 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:57,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:57,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1917202559, now seen corresponding path program 40 times [2021-04-16 06:51:57,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:57,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610695168] [2021-04-16 06:51:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:57,799 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:57,801 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:57,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:57,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:51:57,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:57,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:57,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:58,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:58,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:51:58,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:58,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:51:58,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:58,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:51:58,064 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:51:58,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:51:58,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:58,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:58,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:58,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:58,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610695168] [2021-04-16 06:51:58,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:58,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-04-16 06:51:58,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049427403] [2021-04-16 06:51:58,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-16 06:51:58,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:58,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-16 06:51:58,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:51:58,157 INFO L87 Difference]: Start difference. First operand 2269 states and 2524 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 19 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:14,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:14,935 INFO L93 Difference]: Finished difference Result 8823 states and 10196 transitions. [2021-04-16 06:52:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-16 06:52:14,936 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 19 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-04-16 06:52:14,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:14,948 INFO L225 Difference]: With dead ends: 8823 [2021-04-16 06:52:14,948 INFO L226 Difference]: Without dead ends: 8728 [2021-04-16 06:52:14,951 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 317.7ms TimeCoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:52:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8728 states. [2021-04-16 06:52:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8728 to 2269. [2021-04-16 06:52:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2264 states have (on average 1.1130742049469964) internal successors, (2520), 2264 states have internal predecessors, (2520), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:18,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 2524 transitions. [2021-04-16 06:52:18,836 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 2524 transitions. Word has length 95 [2021-04-16 06:52:18,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:18,836 INFO L480 AbstractCegarLoop]: Abstraction has 2269 states and 2524 transitions. [2021-04-16 06:52:18,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 19 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 2524 transitions. [2021-04-16 06:52:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-04-16 06:52:18,839 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:18,839 INFO L519 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 5, 5, 4, 4, 4, 3, 3, 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, 1] [2021-04-16 06:52:18,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-04-16 06:52:18,839 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:18,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:18,840 INFO L82 PathProgramCache]: Analyzing trace with hash -2109118051, now seen corresponding path program 41 times [2021-04-16 06:52:18,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:18,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780655230] [2021-04-16 06:52:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:18,847 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:18,848 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:18,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:18,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:18,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:18,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:18,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:18,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:18,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:18,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:18,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:18,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:18,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:18,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:18,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:52:19,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:19,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:52:19,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:52:19,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:52:19,074 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:52:19,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:52:19,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:19,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:19,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:19,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:19,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:19,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780655230] [2021-04-16 06:52:19,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:19,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:52:19,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733935548] [2021-04-16 06:52:19,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:52:19,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:19,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:52:19,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:52:19,155 INFO L87 Difference]: Start difference. First operand 2269 states and 2524 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:32,139 INFO L93 Difference]: Finished difference Result 6606 states and 7579 transitions. [2021-04-16 06:52:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:52:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2021-04-16 06:52:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:32,151 INFO L225 Difference]: With dead ends: 6606 [2021-04-16 06:52:32,151 INFO L226 Difference]: Without dead ends: 6424 [2021-04-16 06:52:32,153 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 333.0ms TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:52:32,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6424 states. [2021-04-16 06:52:36,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6424 to 2269. [2021-04-16 06:52:36,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2264 states have (on average 1.1130742049469964) internal successors, (2520), 2264 states have internal predecessors, (2520), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:36,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 2524 transitions. [2021-04-16 06:52:36,036 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 2524 transitions. Word has length 96 [2021-04-16 06:52:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:36,036 INFO L480 AbstractCegarLoop]: Abstraction has 2269 states and 2524 transitions. [2021-04-16 06:52:36,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 2524 transitions. [2021-04-16 06:52:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-04-16 06:52:36,040 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:36,040 INFO L519 BasicCegarLoop]: trace histogram [19, 18, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:36,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-04-16 06:52:36,040 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:36,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:36,040 INFO L82 PathProgramCache]: Analyzing trace with hash -861947120, now seen corresponding path program 8 times [2021-04-16 06:52:36,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:36,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693563046] [2021-04-16 06:52:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:36,047 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:36,048 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:36,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:36,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:36,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:36,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:52:36,432 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:52:36,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:52:36,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:36,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:36,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:36,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:36,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693563046] [2021-04-16 06:52:36,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:36,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:52:36,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756935146] [2021-04-16 06:52:36,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:52:36,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:36,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:52:36,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:52:36,534 INFO L87 Difference]: Start difference. First operand 2269 states and 2524 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:03,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:53:03,449 INFO L93 Difference]: Finished difference Result 12754 states and 14828 transitions. [2021-04-16 06:53:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-16 06:53:03,450 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (3), 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 96 [2021-04-16 06:53:03,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:53:03,472 INFO L225 Difference]: With dead ends: 12754 [2021-04-16 06:53:03,472 INFO L226 Difference]: Without dead ends: 12687 [2021-04-16 06:53:03,476 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 427.8ms TimeCoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:53:03,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12687 states. [2021-04-16 06:53:07,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12687 to 2273. [2021-04-16 06:53:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.1137566137566137) internal successors, (2526), 2268 states have internal predecessors, (2526), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2530 transitions. [2021-04-16 06:53:07,746 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2530 transitions. Word has length 96 [2021-04-16 06:53:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:53:07,746 INFO L480 AbstractCegarLoop]: Abstraction has 2273 states and 2530 transitions. [2021-04-16 06:53:07,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2530 transitions. [2021-04-16 06:53:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-04-16 06:53:07,750 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:53:07,750 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:53:07,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-04-16 06:53:07,751 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:53:07,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:53:07,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1097721241, now seen corresponding path program 42 times [2021-04-16 06:53:07,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:53:07,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278719970] [2021-04-16 06:53:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:53:07,757 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:53:07,758 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:53:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:07,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:07,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:53:07,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:07,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:07,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:07,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:07,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:07,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:53:07,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:53:07,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:53:07,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:53:07,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:53:07,939 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:53:07,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:53:07,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:07,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:08,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:08,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:08,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:08,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278719970] [2021-04-16 06:53:08,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:08,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:53:08,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767101268] [2021-04-16 06:53:08,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:53:08,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:08,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:53:08,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:53:08,012 INFO L87 Difference]: Start difference. First operand 2273 states and 2530 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:53:17,423 INFO L93 Difference]: Finished difference Result 4395 states and 5002 transitions. [2021-04-16 06:53:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:53:17,425 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 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 97 [2021-04-16 06:53:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:53:17,431 INFO L225 Difference]: With dead ends: 4395 [2021-04-16 06:53:17,431 INFO L226 Difference]: Without dead ends: 4133 [2021-04-16 06:53:17,433 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 337.7ms TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:53:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2021-04-16 06:53:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 2273. [2021-04-16 06:53:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.1137566137566137) internal successors, (2526), 2268 states have internal predecessors, (2526), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2530 transitions. [2021-04-16 06:53:21,639 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2530 transitions. Word has length 97 [2021-04-16 06:53:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:53:21,639 INFO L480 AbstractCegarLoop]: Abstraction has 2273 states and 2530 transitions. [2021-04-16 06:53:21,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:21,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2530 transitions. [2021-04-16 06:53:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-04-16 06:53:21,642 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:53:21,642 INFO L519 BasicCegarLoop]: trace histogram [15, 14, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:53:21,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-04-16 06:53:21,642 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:53:21,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:53:21,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1419409540, now seen corresponding path program 43 times [2021-04-16 06:53:21,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:53:21,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491965100] [2021-04-16 06:53:21,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:53:21,649 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:53:21,650 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:53:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:21,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:21,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:53:21,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:21,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:53:21,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:53:21,936 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:53:21,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:53:21,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:22,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:22,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:22,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:22,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491965100] [2021-04-16 06:53:22,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:22,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:53:22,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055868404] [2021-04-16 06:53:22,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:53:22,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:22,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:53:22,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:53:22,034 INFO L87 Difference]: Start difference. First operand 2273 states and 2530 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:53:44,630 INFO L93 Difference]: Finished difference Result 9632 states and 11136 transitions. [2021-04-16 06:53:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-16 06:53:44,632 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 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 97 [2021-04-16 06:53:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:53:44,648 INFO L225 Difference]: With dead ends: 9632 [2021-04-16 06:53:44,648 INFO L226 Difference]: Without dead ends: 9537 [2021-04-16 06:53:44,653 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 359.2ms TimeCoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:53:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9537 states. [2021-04-16 06:53:48,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9537 to 2273. [2021-04-16 06:53:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.1137566137566137) internal successors, (2526), 2268 states have internal predecessors, (2526), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2530 transitions. [2021-04-16 06:53:48,990 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2530 transitions. Word has length 97 [2021-04-16 06:53:48,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:53:48,990 INFO L480 AbstractCegarLoop]: Abstraction has 2273 states and 2530 transitions. [2021-04-16 06:53:48,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2530 transitions. [2021-04-16 06:53:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-04-16 06:53:48,994 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:53:48,994 INFO L519 BasicCegarLoop]: trace histogram [11, 10, 6, 6, 5, 5, 4, 4, 4, 3, 3, 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, 1] [2021-04-16 06:53:48,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-04-16 06:53:48,994 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:53:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:53:48,995 INFO L82 PathProgramCache]: Analyzing trace with hash -360832456, now seen corresponding path program 44 times [2021-04-16 06:53:48,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:53:48,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376716040] [2021-04-16 06:53:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:53:49,001 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:53:49,003 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:53:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:49,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:49,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:53:49,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:49,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:49,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:49,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:49,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:49,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:49,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:49,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:49,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:49,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:53:49,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:53:49,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:53:49,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:53:49,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:53:49,247 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:53:49,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:53:49,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:49,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:49,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:49,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:49,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376716040] [2021-04-16 06:53:49,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:49,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:53:49,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420933305] [2021-04-16 06:53:49,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:53:49,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:49,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:53:49,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:53:49,330 INFO L87 Difference]: Start difference. First operand 2273 states and 2530 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:07,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:54:07,088 INFO L93 Difference]: Finished difference Result 7415 states and 8519 transitions. [2021-04-16 06:54:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-16 06:54:07,090 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 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 98 [2021-04-16 06:54:07,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:54:07,100 INFO L225 Difference]: With dead ends: 7415 [2021-04-16 06:54:07,101 INFO L226 Difference]: Without dead ends: 7233 [2021-04-16 06:54:07,105 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 354.4ms TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:54:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7233 states. [2021-04-16 06:54:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7233 to 2273. [2021-04-16 06:54:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.1137566137566137) internal successors, (2526), 2268 states have internal predecessors, (2526), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2530 transitions. [2021-04-16 06:54:11,871 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2530 transitions. Word has length 98 [2021-04-16 06:54:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:54:11,871 INFO L480 AbstractCegarLoop]: Abstraction has 2273 states and 2530 transitions. [2021-04-16 06:54:11,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:11,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2530 transitions. [2021-04-16 06:54:11,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-04-16 06:54:11,875 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:54:11,875 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:54:11,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-04-16 06:54:11,875 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:54:11,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:54:11,876 INFO L82 PathProgramCache]: Analyzing trace with hash -540000162, now seen corresponding path program 45 times [2021-04-16 06:54:11,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:54:11,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911221129] [2021-04-16 06:54:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:54:11,883 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:54:11,884 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:54:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:11,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:11,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:11,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:11,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:11,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:11,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:11,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:11,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:12,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:12,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:12,023 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-04-16 06:54:12,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:54:12,056 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size [2021-04-16 06:54:12,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:54:12,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:12,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:54:12,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:12,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:54:12,116 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:54:12,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:54:12,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:12,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:12,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:54:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:12,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:12,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:54:12,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911221129] [2021-04-16 06:54:12,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:54:12,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:54:12,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121892797] [2021-04-16 06:54:12,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:54:12,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:54:12,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:54:12,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:54:12,187 INFO L87 Difference]: Start difference. First operand 2273 states and 2530 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:54:24,567 INFO L93 Difference]: Finished difference Result 5140 states and 5866 transitions. [2021-04-16 06:54:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:54:24,568 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2021-04-16 06:54:24,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:54:24,576 INFO L225 Difference]: With dead ends: 5140 [2021-04-16 06:54:24,576 INFO L226 Difference]: Without dead ends: 4878 [2021-04-16 06:54:24,578 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 349.7ms TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:54:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2021-04-16 06:54:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 2273. [2021-04-16 06:54:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.1137566137566137) internal successors, (2526), 2268 states have internal predecessors, (2526), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2530 transitions. [2021-04-16 06:54:29,443 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2530 transitions. Word has length 99 [2021-04-16 06:54:29,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:54:29,443 INFO L480 AbstractCegarLoop]: Abstraction has 2273 states and 2530 transitions. [2021-04-16 06:54:29,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:29,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2530 transitions. [2021-04-16 06:54:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-04-16 06:54:29,448 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:54:29,449 INFO L519 BasicCegarLoop]: trace histogram [16, 15, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:54:29,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-04-16 06:54:29,449 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:54:29,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:54:29,449 INFO L82 PathProgramCache]: Analyzing trace with hash -218311863, now seen corresponding path program 46 times [2021-04-16 06:54:29,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:54:29,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016354663] [2021-04-16 06:54:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:54:29,460 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:54:29,462 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:54:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:29,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:29,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:29,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:54:29,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:54:29,779 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-04-16 06:54:29,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:54:29,811 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:54:29,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:54:29,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:29,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:54:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:29,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:29,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:54:29,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016354663] [2021-04-16 06:54:29,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:54:29,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:54:29,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787690940] [2021-04-16 06:54:29,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:54:29,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:54:29,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:54:29,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:54:29,907 INFO L87 Difference]: Start difference. First operand 2273 states and 2530 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:56,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:54:56,536 INFO L93 Difference]: Finished difference Result 10437 states and 12070 transitions. [2021-04-16 06:54:56,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:54:56,560 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 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 99 [2021-04-16 06:54:56,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:54:56,577 INFO L225 Difference]: With dead ends: 10437 [2021-04-16 06:54:56,577 INFO L226 Difference]: Without dead ends: 10342 [2021-04-16 06:54:56,581 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 426.6ms TimeCoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:54:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10342 states. [2021-04-16 06:55:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10342 to 2273. [2021-04-16 06:55:01,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.1137566137566137) internal successors, (2526), 2268 states have internal predecessors, (2526), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2530 transitions. [2021-04-16 06:55:01,335 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2530 transitions. Word has length 99 [2021-04-16 06:55:01,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:55:01,335 INFO L480 AbstractCegarLoop]: Abstraction has 2273 states and 2530 transitions. [2021-04-16 06:55:01,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2530 transitions. [2021-04-16 06:55:01,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-04-16 06:55:01,340 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:55:01,340 INFO L519 BasicCegarLoop]: trace histogram [12, 11, 6, 6, 5, 5, 4, 4, 4, 3, 3, 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, 1] [2021-04-16 06:55:01,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-04-16 06:55:01,341 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:55:01,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:55:01,369 INFO L82 PathProgramCache]: Analyzing trace with hash 409411603, now seen corresponding path program 47 times [2021-04-16 06:55:01,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:55:01,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213351092] [2021-04-16 06:55:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:55:01,379 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:55:01,380 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:55:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:01,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:01,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:55:01,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:01,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:55:01,623 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:55:01,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:55:01,659 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:55:01,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:55:01,698 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:55:01,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:55:01,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:01,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:55:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:01,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:55:01,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213351092] [2021-04-16 06:55:01,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:55:01,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:55:01,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310147083] [2021-04-16 06:55:01,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:55:01,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:55:01,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:55:01,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:55:01,787 INFO L87 Difference]: Start difference. First operand 2273 states and 2530 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:25,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:55:25,739 INFO L93 Difference]: Finished difference Result 8220 states and 9453 transitions. [2021-04-16 06:55:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-16 06:55:25,740 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (3), 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 100 [2021-04-16 06:55:25,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:55:25,753 INFO L225 Difference]: With dead ends: 8220 [2021-04-16 06:55:25,753 INFO L226 Difference]: Without dead ends: 8038 [2021-04-16 06:55:25,757 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 446.4ms TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:55:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8038 states. [2021-04-16 06:55:31,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8038 to 2273. [2021-04-16 06:55:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.1137566137566137) internal successors, (2526), 2268 states have internal predecessors, (2526), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2530 transitions. [2021-04-16 06:55:31,013 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2530 transitions. Word has length 100 [2021-04-16 06:55:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:55:31,013 INFO L480 AbstractCegarLoop]: Abstraction has 2273 states and 2530 transitions. [2021-04-16 06:55:31,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2530 transitions. [2021-04-16 06:55:31,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-04-16 06:55:31,017 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:55:31,017 INFO L519 BasicCegarLoop]: trace histogram [21, 20, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:55:31,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-04-16 06:55:31,017 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:55:31,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:55:31,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1656582534, now seen corresponding path program 9 times [2021-04-16 06:55:31,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:55:31,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774102222] [2021-04-16 06:55:31,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:55:31,023 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:55:31,024 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:55:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:31,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:31,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:55:31,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:55:31,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:55:31,473 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:55:31,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:55:31,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:31,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:55:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:31,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:31,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:55:31,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774102222] [2021-04-16 06:55:31,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:55:31,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-04-16 06:55:31,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654947559] [2021-04-16 06:55:31,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-04-16 06:55:31,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:55:31,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-04-16 06:55:31,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:55:31,602 INFO L87 Difference]: Start difference. First operand 2273 states and 2530 transitions. Second operand has 26 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) [2021-04-16 06:56:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:56:15,047 INFO L93 Difference]: Finished difference Result 14368 states and 16702 transitions. [2021-04-16 06:56:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:56:15,049 INFO L78 Accepts]: Start accepts. Automaton has has 26 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 100 [2021-04-16 06:56:15,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:56:15,074 INFO L225 Difference]: With dead ends: 14368 [2021-04-16 06:56:15,075 INFO L226 Difference]: Without dead ends: 14301 [2021-04-16 06:56:15,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 499.6ms TimeCoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:56:15,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14301 states. [2021-04-16 06:56:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14301 to 2277. [2021-04-16 06:56:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2272 states have (on average 1.1144366197183098) internal successors, (2532), 2272 states have internal predecessors, (2532), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2536 transitions. [2021-04-16 06:56:20,104 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2536 transitions. Word has length 100 [2021-04-16 06:56:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:56:20,104 INFO L480 AbstractCegarLoop]: Abstraction has 2277 states and 2536 transitions. [2021-04-16 06:56:20,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 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) [2021-04-16 06:56:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2536 transitions. [2021-04-16 06:56:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-04-16 06:56:20,107 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:56:20,108 INFO L519 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:56:20,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-04-16 06:56:20,108 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:56:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:56:20,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1862729187, now seen corresponding path program 48 times [2021-04-16 06:56:20,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:56:20,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715177025] [2021-04-16 06:56:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:56:20,115 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:56:20,116 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:56:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:20,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:20,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:56:20,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:20,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:20,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:20,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:20,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:20,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:20,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:20,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:56:20,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:56:20,275 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-04-16 06:56:20,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:56:20,317 INFO L142 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-04-16 06:56:20,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:56:20,343 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size [2021-04-16 06:56:20,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:56:20,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:20,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:56:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:20,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:56:20,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715177025] [2021-04-16 06:56:20,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:56:20,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:56:20,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539056809] [2021-04-16 06:56:20,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:56:20,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:56:20,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:56:20,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:56:20,432 INFO L87 Difference]: Start difference. First operand 2277 states and 2536 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:56:36,529 INFO L93 Difference]: Finished difference Result 5949 states and 6806 transitions. [2021-04-16 06:56:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:56:36,530 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 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 101 [2021-04-16 06:56:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:56:36,539 INFO L225 Difference]: With dead ends: 5949 [2021-04-16 06:56:36,539 INFO L226 Difference]: Without dead ends: 5687 [2021-04-16 06:56:36,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 348.5ms TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:56:36,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2021-04-16 06:56:41,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 2277. [2021-04-16 06:56:41,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2272 states have (on average 1.1144366197183098) internal successors, (2532), 2272 states have internal predecessors, (2532), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2536 transitions. [2021-04-16 06:56:41,413 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2536 transitions. Word has length 101 [2021-04-16 06:56:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:56:41,413 INFO L480 AbstractCegarLoop]: Abstraction has 2277 states and 2536 transitions. [2021-04-16 06:56:41,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:41,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2536 transitions. [2021-04-16 06:56:41,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-04-16 06:56:41,416 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:56:41,416 INFO L519 BasicCegarLoop]: trace histogram [17, 16, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:56:41,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-04-16 06:56:41,417 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:56:41,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:56:41,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2110549810, now seen corresponding path program 49 times [2021-04-16 06:56:41,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:56:41,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722517925] [2021-04-16 06:56:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:56:41,424 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:56:41,426 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:56:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:41,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:41,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:56:41,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:41,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:41,821 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-04-16 06:56:41,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:56:41,889 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size [2021-04-16 06:56:41,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:56:41,947 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:56:41,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:56:42,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:42,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:56:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:42,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:42,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:56:42,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722517925] [2021-04-16 06:56:42,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:56:42,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:56:42,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563983073] [2021-04-16 06:56:42,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:56:42,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:56:42,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:56:42,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:56:42,092 INFO L87 Difference]: Start difference. First operand 2277 states and 2536 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:57:18,062 INFO L93 Difference]: Finished difference Result 11246 states and 13010 transitions. [2021-04-16 06:57:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-16 06:57:18,063 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 2 states have call successors, (3), 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 101 [2021-04-16 06:57:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:57:18,079 INFO L225 Difference]: With dead ends: 11246 [2021-04-16 06:57:18,079 INFO L226 Difference]: Without dead ends: 11151 [2021-04-16 06:57:18,082 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 620.4ms TimeCoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:57:18,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11151 states. [2021-04-16 06:57:23,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11151 to 2277. [2021-04-16 06:57:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2272 states have (on average 1.1144366197183098) internal successors, (2532), 2272 states have internal predecessors, (2532), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:23,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2536 transitions. [2021-04-16 06:57:23,194 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2536 transitions. Word has length 101 [2021-04-16 06:57:23,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:57:23,195 INFO L480 AbstractCegarLoop]: Abstraction has 2277 states and 2536 transitions. [2021-04-16 06:57:23,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2536 transitions. [2021-04-16 06:57:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:57:23,199 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:57:23,200 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:57:23,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-04-16 06:57:23,200 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:57:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:57:23,200 INFO L82 PathProgramCache]: Analyzing trace with hash -2101733253, now seen corresponding path program 50 times [2021-04-16 06:57:23,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:57:23,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034609691] [2021-04-16 06:57:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:57:23,207 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:57:23,209 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:57:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:23,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:23,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:23,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:23,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:57:23,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:23,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:23,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:23,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:23,292 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:57:23,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:57:23,326 INFO L142 QuantifierPusher]: treesize reduction 7, result has 73.1 percent of original size [2021-04-16 06:57:23,327 INFO L147 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size 11 [2021-04-16 06:57:23,338 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-04-16 06:57:23,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:57:23,359 INFO L142 QuantifierPusher]: treesize reduction 16, result has 50.0 percent of original size [2021-04-16 06:57:23,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:57:23,383 INFO L142 QuantifierPusher]: treesize reduction 16, result has 50.0 percent of original size [2021-04-16 06:57:23,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:57:23,406 INFO L142 QuantifierPusher]: treesize reduction 17, result has 66.7 percent of original size [2021-04-16 06:57:23,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:57:23,455 INFO L142 QuantifierPusher]: treesize reduction 27, result has 44.9 percent of original size [2021-04-16 06:57:23,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:57:23,458 INFO L142 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-04-16 06:57:23,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:23,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:23,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:23,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:57:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:23,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:23,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:57:23,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034609691] [2021-04-16 06:57:23,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:57:23,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:57:23,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052346757] [2021-04-16 06:57:23,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:57:23,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:57:23,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:57:23,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:57:23,493 INFO L87 Difference]: Start difference. First operand 2277 states and 2536 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:28,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:57:28,171 INFO L93 Difference]: Finished difference Result 2513 states and 2798 transitions. [2021-04-16 06:57:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:57:28,173 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 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 102 [2021-04-16 06:57:28,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:57:28,176 INFO L225 Difference]: With dead ends: 2513 [2021-04-16 06:57:28,176 INFO L226 Difference]: Without dead ends: 1613 [2021-04-16 06:57:28,179 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 211.8ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:57:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-04-16 06:57:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1567. [2021-04-16 06:57:32,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1562 states have (on average 1.1299615877080667) internal successors, (1765), 1562 states have internal predecessors, (1765), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 1769 transitions. [2021-04-16 06:57:32,144 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 1769 transitions. Word has length 102 [2021-04-16 06:57:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:57:32,144 INFO L480 AbstractCegarLoop]: Abstraction has 1567 states and 1769 transitions. [2021-04-16 06:57:32,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 1769 transitions. [2021-04-16 06:57:32,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:57:32,147 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:57:32,147 INFO L519 BasicCegarLoop]: trace histogram [13, 12, 6, 6, 5, 5, 4, 4, 4, 3, 3, 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, 1] [2021-04-16 06:57:32,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-04-16 06:57:32,148 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:57:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:57:32,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1879577390, now seen corresponding path program 51 times [2021-04-16 06:57:32,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:57:32,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762572858] [2021-04-16 06:57:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:57:32,155 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:57:32,157 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:57:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:32,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:32,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:57:32,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:32,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:57:32,447 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:57:32,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:57:32,486 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:57:32,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:57:32,527 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:57:32,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:57:32,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:57:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:32,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:32,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:57:32,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762572858] [2021-04-16 06:57:32,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:57:32,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-04-16 06:57:32,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177876996] [2021-04-16 06:57:32,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-16 06:57:32,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:57:32,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-16 06:57:32,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:57:32,624 INFO L87 Difference]: Start difference. First operand 1567 states and 1769 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:59,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:57:59,820 INFO L93 Difference]: Finished difference Result 8293 states and 9594 transitions. [2021-04-16 06:57:59,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:57:59,822 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 2 states have call successors, (3), 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 102 [2021-04-16 06:57:59,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:57:59,838 INFO L225 Difference]: With dead ends: 8293 [2021-04-16 06:57:59,838 INFO L226 Difference]: Without dead ends: 8111 [2021-04-16 06:57:59,842 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 468.4ms TimeCoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:57:59,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8111 states. [2021-04-16 06:58:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8111 to 1567. [2021-04-16 06:58:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1562 states have (on average 1.1299615877080667) internal successors, (1765), 1562 states have internal predecessors, (1765), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 1769 transitions. [2021-04-16 06:58:03,825 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 1769 transitions. Word has length 102 [2021-04-16 06:58:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:58:03,825 INFO L480 AbstractCegarLoop]: Abstraction has 1567 states and 1769 transitions. [2021-04-16 06:58:03,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 1769 transitions. [2021-04-16 06:58:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-04-16 06:58:03,827 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:58:03,828 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:58:03,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-04-16 06:58:03,828 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:58:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:58:03,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1967412989, now seen corresponding path program 52 times [2021-04-16 06:58:03,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:58:03,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57991163] [2021-04-16 06:58:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:58:03,835 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:58:03,836 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:58:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:03,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:03,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:03,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:03,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:03,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:03,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:58:03,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:03,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:58:03,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:03,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:58:03,967 INFO L142 QuantifierPusher]: treesize reduction 75, result has 78.3 percent of original size [2021-04-16 06:58:03,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-04-16 06:58:04,066 INFO L142 QuantifierPusher]: treesize reduction 144, result has 68.8 percent of original size [2021-04-16 06:58:04,069 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.2 percent of original size 309 [2021-04-16 06:58:04,187 INFO L142 QuantifierPusher]: treesize reduction 153, result has 66.9 percent of original size [2021-04-16 06:58:04,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 309 [2021-04-16 06:58:04,294 INFO L142 QuantifierPusher]: treesize reduction 69, result has 85.7 percent of original size [2021-04-16 06:58:04,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 414 [2021-04-16 06:58:04,421 INFO L142 QuantifierPusher]: treesize reduction 69, result has 86.5 percent of original size [2021-04-16 06:58:04,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 442 [2021-04-16 06:58:04,469 INFO L142 QuantifierPusher]: treesize reduction 69, result has 85.4 percent of original size [2021-04-16 06:58:04,471 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.8 percent of original size 393 [2021-04-16 06:58:04,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:04,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:58:04,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:04,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:58:04,566 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-04-16 06:58:04,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:58:04,607 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-04-16 06:58:04,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:58:04,653 INFO L142 QuantifierPusher]: treesize reduction 117, result has 71.6 percent of original size [2021-04-16 06:58:04,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 295 [2021-04-16 06:58:04,795 INFO L142 QuantifierPusher]: treesize reduction 44, result has 89.4 percent of original size [2021-04-16 06:58:04,797 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.6 percent of original size 362 [2021-04-16 06:58:04,926 INFO L142 QuantifierPusher]: treesize reduction 88, result has 75.7 percent of original size [2021-04-16 06:58:04,928 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.7 percent of original size 265 [2021-04-16 06:58:04,933 INFO L142 QuantifierPusher]: treesize reduction 30, result has 59.5 percent of original size [2021-04-16 06:58:04,934 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-04-16 06:58:04,936 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:58:04,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:04,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:04,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:58:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:04,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:04,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:58:05,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57991163] [2021-04-16 06:58:05,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:58:05,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:58:05,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988256016] [2021-04-16 06:58:05,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:58:05,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:58:05,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:58:05,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:58:05,002 INFO L87 Difference]: Start difference. First operand 1567 states and 1769 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:58:10,159 INFO L93 Difference]: Finished difference Result 1603 states and 1809 transitions. [2021-04-16 06:58:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:58:10,160 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (3), 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 103 [2021-04-16 06:58:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:58:10,162 INFO L225 Difference]: With dead ends: 1603 [2021-04-16 06:58:10,162 INFO L226 Difference]: Without dead ends: 1011 [2021-04-16 06:58:10,163 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1340.1ms TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:58:10,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-04-16 06:58:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1011. [2021-04-16 06:58:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1006 states have (on average 1.1749502982107356) internal successors, (1182), 1006 states have internal predecessors, (1182), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1186 transitions. [2021-04-16 06:58:13,053 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1186 transitions. Word has length 103 [2021-04-16 06:58:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:58:13,053 INFO L480 AbstractCegarLoop]: Abstraction has 1011 states and 1186 transitions. [2021-04-16 06:58:13,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1186 transitions. [2021-04-16 06:58:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-04-16 06:58:13,054 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:58:13,054 INFO L519 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:58:13,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-04-16 06:58:13,054 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:58:13,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:58:13,055 INFO L82 PathProgramCache]: Analyzing trace with hash 193228328, now seen corresponding path program 53 times [2021-04-16 06:58:13,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:58:13,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197436485] [2021-04-16 06:58:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:58:13,065 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:58:13,066 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:58:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:13,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:13,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:58:13,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:13,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:13,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:13,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:13,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:13,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:13,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:13,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:13,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:58:13,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:58:13,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:58:13,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:58:13,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:58:13,328 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:58:13,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:58:13,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:13,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:58:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:13,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:13,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:58:13,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197436485] [2021-04-16 06:58:13,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:58:13,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:58:13,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632072808] [2021-04-16 06:58:13,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:58:13,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:58:13,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:58:13,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:58:13,420 INFO L87 Difference]: Start difference. First operand 1011 states and 1186 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:32,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:58:32,365 INFO L93 Difference]: Finished difference Result 5501 states and 6402 transitions. [2021-04-16 06:58:32,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:58:32,367 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 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 103 [2021-04-16 06:58:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:58:32,375 INFO L225 Difference]: With dead ends: 5501 [2021-04-16 06:58:32,375 INFO L226 Difference]: Without dead ends: 5239 [2021-04-16 06:58:32,377 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 511.4ms TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:58:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2021-04-16 06:58:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 1011. [2021-04-16 06:58:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1006 states have (on average 1.1749502982107356) internal successors, (1182), 1006 states have internal predecessors, (1182), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1186 transitions. [2021-04-16 06:58:35,345 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1186 transitions. Word has length 103 [2021-04-16 06:58:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:58:35,345 INFO L480 AbstractCegarLoop]: Abstraction has 1011 states and 1186 transitions. [2021-04-16 06:58:35,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1186 transitions. [2021-04-16 06:58:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-04-16 06:58:35,347 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:58:35,347 INFO L519 BasicCegarLoop]: trace histogram [18, 17, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:58:35,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-04-16 06:58:35,347 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:58:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:58:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash 514916627, now seen corresponding path program 54 times [2021-04-16 06:58:35,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:58:35,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998379149] [2021-04-16 06:58:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:58:35,354 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:58:35,355 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:58:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:35,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:35,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:58:35,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:58:35,733 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-04-16 06:58:35,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 06:58:35,789 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size [2021-04-16 06:58:35,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-04-16 06:58:35,832 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 06:58:35,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:58:35,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:35,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:58:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:35,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:35,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:58:35,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998379149] [2021-04-16 06:58:35,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:58:35,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:58:35,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513419696] [2021-04-16 06:58:35,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:58:35,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:58:35,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:58:35,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:58:35,946 INFO L87 Difference]: Start difference. First operand 1011 states and 1186 transitions. Second operand has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 22 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:59:13,913 INFO L93 Difference]: Finished difference Result 10732 states and 12530 transitions. [2021-04-16 06:59:13,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-16 06:59:13,915 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 22 states have internal predecessors, (66), 2 states have call successors, (3), 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 103 [2021-04-16 06:59:13,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:59:13,932 INFO L225 Difference]: With dead ends: 10732 [2021-04-16 06:59:13,932 INFO L226 Difference]: Without dead ends: 10637 [2021-04-16 06:59:13,936 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 579.0ms TimeCoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:59:13,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10637 states. [2021-04-16 06:59:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10637 to 1011. [2021-04-16 06:59:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1006 states have (on average 1.1749502982107356) internal successors, (1182), 1006 states have internal predecessors, (1182), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1186 transitions. [2021-04-16 06:59:17,090 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1186 transitions. Word has length 103 [2021-04-16 06:59:17,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:59:17,090 INFO L480 AbstractCegarLoop]: Abstraction has 1011 states and 1186 transitions. [2021-04-16 06:59:17,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 22 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1186 transitions. [2021-04-16 06:59:17,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-04-16 06:59:17,091 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:59:17,091 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 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, 1, 1, 1, 1, 1] [2021-04-16 06:59:17,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-04-16 06:59:17,091 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:59:17,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:59:17,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1978314966, now seen corresponding path program 55 times [2021-04-16 06:59:17,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:59:17,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694353977] [2021-04-16 06:59:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:59:17,098 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:59:17,099 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:59:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:59:17,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:17,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:17,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:17,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:59:17,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:17,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:59:17,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:17,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:59:17,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:17,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:59:17,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:17,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:59:17,313 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-04-16 06:59:17,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:59:17,348 INFO L142 QuantifierPusher]: treesize reduction 16, result has 51.5 percent of original size [2021-04-16 06:59:17,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:59:17,352 INFO L142 QuantifierPusher]: treesize reduction 88, result has 54.2 percent of original size [2021-04-16 06:59:17,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-04-16 06:59:17,402 INFO L142 QuantifierPusher]: treesize reduction 24, result has 89.4 percent of original size [2021-04-16 06:59:17,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-04-16 06:59:17,461 INFO L142 QuantifierPusher]: treesize reduction 72, result has 89.9 percent of original size [2021-04-16 06:59:17,465 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.6 percent of original size 634 [2021-04-16 06:59:17,670 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 38 [2021-04-16 06:59:17,676 INFO L142 QuantifierPusher]: treesize reduction 82, result has 89.5 percent of original size [2021-04-16 06:59:17,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 699 [2021-04-16 06:59:17,850 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 33 [2021-04-16 06:59:17,854 INFO L142 QuantifierPusher]: treesize reduction 44, result has 87.7 percent of original size [2021-04-16 06:59:17,856 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.1 percent of original size 304 [2021-04-16 06:59:17,957 INFO L142 QuantifierPusher]: treesize reduction 27, result has 66.3 percent of original size [2021-04-16 06:59:17,958 INFO L147 QuantifierPusher]: treesize reduction 9, result has 83.0 percent of original size 44 [2021-04-16 06:59:18,012 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.0 percent of original size [2021-04-16 06:59:18,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:59:18,065 INFO L142 QuantifierPusher]: treesize reduction 144, result has 63.3 percent of original size [2021-04-16 06:59:18,066 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.4 percent of original size 239 [2021-04-16 06:59:18,258 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2021-04-16 06:59:18,263 INFO L142 QuantifierPusher]: treesize reduction 177, result has 70.4 percent of original size [2021-04-16 06:59:18,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 420 [2021-04-16 06:59:18,430 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 33 [2021-04-16 06:59:18,436 INFO L142 QuantifierPusher]: treesize reduction 102, result has 87.8 percent of original size [2021-04-16 06:59:18,439 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.8 percent of original size 724 [2021-04-16 06:59:18,650 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 35 [2021-04-16 06:59:18,655 INFO L142 QuantifierPusher]: treesize reduction 111, result has 86.7 percent of original size [2021-04-16 06:59:18,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 723 [2021-04-16 06:59:18,849 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 30 [2021-04-16 06:59:18,853 INFO L142 QuantifierPusher]: treesize reduction 67, result has 86.9 percent of original size [2021-04-16 06:59:18,855 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.0 percent of original size 437 [2021-04-16 06:59:19,007 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.3 percent of original size [2021-04-16 06:59:19,008 INFO L147 QuantifierPusher]: treesize reduction 9, result has 85.2 percent of original size 52 [2021-04-16 06:59:19,072 INFO L142 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-04-16 06:59:19,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:59:19,122 INFO L142 QuantifierPusher]: treesize reduction 31, result has 87.6 percent of original size [2021-04-16 06:59:19,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-04-16 06:59:19,212 INFO L142 QuantifierPusher]: treesize reduction 57, result has 83.7 percent of original size [2021-04-16 06:59:19,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 293 [2021-04-16 06:59:19,330 INFO L142 QuantifierPusher]: treesize reduction 57, result has 83.8 percent of original size [2021-04-16 06:59:19,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-04-16 06:59:19,433 INFO L142 QuantifierPusher]: treesize reduction 36, result has 49.3 percent of original size [2021-04-16 06:59:19,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:59:19,492 INFO L142 QuantifierPusher]: treesize reduction 36, result has 49.3 percent of original size [2021-04-16 06:59:19,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:59:19,551 INFO L142 QuantifierPusher]: treesize reduction 19, result has 51.3 percent of original size [2021-04-16 06:59:19,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:59:19,583 INFO L142 QuantifierPusher]: treesize reduction 22, result has 88.0 percent of original size [2021-04-16 06:59:19,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-04-16 06:59:19,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:19,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:59:19,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:19,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:19,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:59:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:59:19,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:19,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:59:19,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694353977] [2021-04-16 06:59:19,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:59:19,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:59:19,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835637427] [2021-04-16 06:59:19,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:59:19,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:59:19,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:59:19,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:59:19,749 INFO L87 Difference]: Start difference. First operand 1011 states and 1186 transitions. Second operand has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 30 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:29,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:59:29,700 INFO L93 Difference]: Finished difference Result 2204 states and 2569 transitions. [2021-04-16 06:59:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-04-16 06:59:29,701 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 30 states have internal predecessors, (84), 2 states have call successors, (3), 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 104 [2021-04-16 06:59:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:59:29,704 INFO L225 Difference]: With dead ends: 2204 [2021-04-16 06:59:29,704 INFO L226 Difference]: Without dead ends: 2199 [2021-04-16 06:59:29,704 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 3425.0ms TimeCoverageRelationStatistics Valid=255, Invalid=1815, Unknown=0, NotChecked=0, Total=2070 [2021-04-16 06:59:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-04-16 06:59:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 1231. [2021-04-16 06:59:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1226 states have (on average 1.1712887438825448) internal successors, (1436), 1226 states have internal predecessors, (1436), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1440 transitions. [2021-04-16 06:59:33,696 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1440 transitions. Word has length 104 [2021-04-16 06:59:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:59:33,696 INFO L480 AbstractCegarLoop]: Abstraction has 1231 states and 1440 transitions. [2021-04-16 06:59:33,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 30 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1440 transitions. [2021-04-16 06:59:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-04-16 06:59:33,698 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:59:33,698 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 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, 1, 1, 1, 1, 1] [2021-04-16 06:59:33,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-04-16 06:59:33,698 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:59:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:59:33,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1671312486, now seen corresponding path program 56 times [2021-04-16 06:59:33,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:59:33,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145831863] [2021-04-16 06:59:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:59:33,704 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:59:33,705 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:59:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:59:33,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:33,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:33,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:33,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:59:33,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:33,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:59:33,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:33,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:59:33,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:33,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:59:33,859 INFO L142 QuantifierPusher]: treesize reduction 76, result has 78.4 percent of original size [2021-04-16 06:59:33,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 276 [2021-04-16 06:59:33,966 INFO L142 QuantifierPusher]: treesize reduction 59, result has 87.0 percent of original size [2021-04-16 06:59:33,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 396 [2021-04-16 06:59:34,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:34,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-04-16 06:59:34,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:34,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:59:34,141 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.1 percent of original size [2021-04-16 06:59:34,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:59:34,182 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.1 percent of original size [2021-04-16 06:59:34,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:59:34,241 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-04-16 06:59:34,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:59:34,263 INFO L142 QuantifierPusher]: treesize reduction 22, result has 88.1 percent of original size [2021-04-16 06:59:34,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-04-16 06:59:34,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:34,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:59:34,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:34,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:34,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:59:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:59:34,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:34,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:59:34,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145831863] [2021-04-16 06:59:34,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:59:34,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:59:34,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913243706] [2021-04-16 06:59:34,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:59:34,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:59:34,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:59:34,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:59:34,406 INFO L87 Difference]: Start difference. First operand 1231 states and 1440 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:59:41,484 INFO L93 Difference]: Finished difference Result 1890 states and 2204 transitions. [2021-04-16 06:59:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:59:41,486 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 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 104 [2021-04-16 06:59:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:59:41,488 INFO L225 Difference]: With dead ends: 1890 [2021-04-16 06:59:41,488 INFO L226 Difference]: Without dead ends: 1885 [2021-04-16 06:59:41,488 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 641.8ms TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:59:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2021-04-16 06:59:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1073. [2021-04-16 06:59:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1068 states have (on average 1.1741573033707866) internal successors, (1254), 1068 states have internal predecessors, (1254), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1258 transitions. [2021-04-16 06:59:45,114 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1258 transitions. Word has length 104 [2021-04-16 06:59:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:59:45,114 INFO L480 AbstractCegarLoop]: Abstraction has 1073 states and 1258 transitions. [2021-04-16 06:59:45,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1258 transitions. [2021-04-16 06:59:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-04-16 06:59:45,115 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:59:45,116 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:59:45,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-04-16 06:59:45,116 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:59:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:59:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1582654790, now seen corresponding path program 57 times [2021-04-16 06:59:45,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:59:45,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149411265] [2021-04-16 06:59:45,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:59:45,122 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:59:45,122 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:59:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:59:45,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:45,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:59:45,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:59:45,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:59:45,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:59:45,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:59:45,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:59:45,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:59:45,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:59:45,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:59:45,277 INFO L142 QuantifierPusher]: treesize reduction 19, result has 81.6 percent of original size [2021-04-16 06:59:45,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:59:45,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:59:45,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:59:45,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:59:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:59:45,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:45,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:59:45,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149411265] [2021-04-16 06:59:45,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:59:45,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:59:45,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425660598] [2021-04-16 06:59:45,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:59:45,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:59:45,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:59:45,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:59:45,418 INFO L87 Difference]: Start difference. First operand 1073 states and 1258 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 13 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:53,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:59:53,681 INFO L93 Difference]: Finished difference Result 1726 states and 2012 transitions. [2021-04-16 06:59:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-16 06:59:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 13 states have internal predecessors, (81), 2 states have call successors, (3), 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 114 [2021-04-16 06:59:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:59:53,685 INFO L225 Difference]: With dead ends: 1726 [2021-04-16 06:59:53,685 INFO L226 Difference]: Without dead ends: 1721 [2021-04-16 06:59:53,685 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 563.3ms TimeCoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:59:53,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2021-04-16 06:59:58,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1238. [2021-04-16 06:59:58,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1233 states have (on average 1.1735604217356042) internal successors, (1447), 1233 states have internal predecessors, (1447), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1451 transitions. [2021-04-16 06:59:58,450 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1451 transitions. Word has length 114 [2021-04-16 06:59:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:59:58,450 INFO L480 AbstractCegarLoop]: Abstraction has 1238 states and 1451 transitions. [2021-04-16 06:59:58,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 13 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1451 transitions. [2021-04-16 06:59:58,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-04-16 06:59:58,451 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:59:58,451 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:59:58,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-04-16 06:59:58,451 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:59:58,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:59:58,452 INFO L82 PathProgramCache]: Analyzing trace with hash 995848776, now seen corresponding path program 58 times [2021-04-16 06:59:58,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:59:58,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231360253] [2021-04-16 06:59:58,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:59:58,457 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:59:58,458 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:59:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:59:58,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:58,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:58,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:58,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:59:58,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:58,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:59:58,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:58,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:59:58,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:58,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:59:58,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:58,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:59:58,690 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-04-16 06:59:58,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:59:58,726 INFO L142 QuantifierPusher]: treesize reduction 16, result has 51.5 percent of original size [2021-04-16 06:59:58,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:59:58,728 INFO L142 QuantifierPusher]: treesize reduction 16, result has 55.6 percent of original size [2021-04-16 06:59:58,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:59:58,750 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-04-16 06:59:58,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:59:58,775 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-04-16 06:59:58,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:59:58,805 INFO L142 QuantifierPusher]: treesize reduction 84, result has 76.3 percent of original size [2021-04-16 06:59:58,806 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.7 percent of original size 261 [2021-04-16 06:59:58,974 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2021-04-16 06:59:58,978 INFO L142 QuantifierPusher]: treesize reduction 127, result has 76.8 percent of original size [2021-04-16 06:59:58,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 421 [2021-04-16 06:59:59,166 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 32 [2021-04-16 06:59:59,171 INFO L142 QuantifierPusher]: treesize reduction 103, result has 87.9 percent of original size [2021-04-16 06:59:59,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 747 [2021-04-16 06:59:59,411 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 42 [2021-04-16 06:59:59,416 INFO L142 QuantifierPusher]: treesize reduction 104, result has 88.6 percent of original size [2021-04-16 06:59:59,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 812 [2021-04-16 06:59:59,668 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 38 [2021-04-16 06:59:59,672 INFO L142 QuantifierPusher]: treesize reduction 67, result has 86.5 percent of original size [2021-04-16 06:59:59,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 430 [2021-04-16 06:59:59,814 INFO L142 QuantifierPusher]: treesize reduction 31, result has 58.1 percent of original size [2021-04-16 06:59:59,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:59:59,866 INFO L142 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size [2021-04-16 06:59:59,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:59:59,911 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-04-16 06:59:59,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:59:59,959 INFO L142 QuantifierPusher]: treesize reduction 12, result has 76.0 percent of original size [2021-04-16 06:59:59,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 07:00:00,026 INFO L142 QuantifierPusher]: treesize reduction 12, result has 76.0 percent of original size [2021-04-16 07:00:00,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 07:00:00,082 INFO L142 QuantifierPusher]: treesize reduction 40, result has 90.6 percent of original size [2021-04-16 07:00:00,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-04-16 07:00:00,241 INFO L142 QuantifierPusher]: treesize reduction 51, result has 89.3 percent of original size [2021-04-16 07:00:00,244 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.4 percent of original size 418 [2021-04-16 07:00:00,327 INFO L142 QuantifierPusher]: treesize reduction 71, result has 91.2 percent of original size [2021-04-16 07:00:00,330 INFO L147 QuantifierPusher]: treesize reduction 7, result has 99.0 percent of original size 728 [2021-04-16 07:00:00,635 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 43 [2021-04-16 07:00:00,640 INFO L142 QuantifierPusher]: treesize reduction 100, result has 86.5 percent of original size [2021-04-16 07:00:00,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 639 [2021-04-16 07:00:00,887 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 27 [2021-04-16 07:00:00,891 INFO L142 QuantifierPusher]: treesize reduction 137, result has 81.4 percent of original size [2021-04-16 07:00:00,895 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.8 percent of original size 592 [2021-04-16 07:00:00,902 INFO L142 QuantifierPusher]: treesize reduction 75, result has 82.1 percent of original size [2021-04-16 07:00:00,904 INFO L147 QuantifierPusher]: treesize reduction 30, result has 91.3 percent of original size 313 [2021-04-16 07:00:00,908 INFO L142 QuantifierPusher]: treesize reduction 22, result has 66.2 percent of original size [2021-04-16 07:00:00,909 INFO L147 QuantifierPusher]: treesize reduction 7, result has 83.7 percent of original size 36 [2021-04-16 07:00:00,911 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 07:00:00,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:00,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:00,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:00,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:00:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:00:00,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:00,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:00:00,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231360253] [2021-04-16 07:00:00,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:00:00,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-04-16 07:00:00,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845278792] [2021-04-16 07:00:00,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-04-16 07:00:00,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:00:00,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-04-16 07:00:00,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-04-16 07:00:00,958 INFO L87 Difference]: Start difference. First operand 1238 states and 1451 transitions. Second operand has 25 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:00:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:00:14,969 INFO L93 Difference]: Finished difference Result 3906 states and 4557 transitions. [2021-04-16 07:00:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-04-16 07:00:14,969 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 2 states have call successors, (3), 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 114 [2021-04-16 07:00:14,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:00:14,972 INFO L225 Difference]: With dead ends: 3906 [2021-04-16 07:00:14,972 INFO L226 Difference]: Without dead ends: 3215 [2021-04-16 07:00:14,974 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3017.8ms TimeCoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2021-04-16 07:00:14,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2021-04-16 07:00:22,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 2027. [2021-04-16 07:00:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2022 states have (on average 1.152324431256182) internal successors, (2330), 2022 states have internal predecessors, (2330), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:00:22,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2334 transitions. [2021-04-16 07:00:22,167 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2334 transitions. Word has length 114 [2021-04-16 07:00:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:00:22,168 INFO L480 AbstractCegarLoop]: Abstraction has 2027 states and 2334 transitions. [2021-04-16 07:00:22,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:00:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2334 transitions. [2021-04-16 07:00:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-04-16 07:00:22,170 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:00:22,170 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:00:22,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-04-16 07:00:22,170 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:00:22,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:00:22,170 INFO L82 PathProgramCache]: Analyzing trace with hash -222783544, now seen corresponding path program 59 times [2021-04-16 07:00:22,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:00:22,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422347009] [2021-04-16 07:00:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:00:22,175 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 07:00:22,176 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:00:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:00:22,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:22,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:22,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:22,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:00:22,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:22,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 07:00:22,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:22,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 07:00:22,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:22,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 07:00:22,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:22,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 07:00:22,358 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-04-16 07:00:22,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 07:00:22,395 INFO L142 QuantifierPusher]: treesize reduction 16, result has 51.5 percent of original size [2021-04-16 07:00:22,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 07:00:22,397 INFO L142 QuantifierPusher]: treesize reduction 16, result has 55.6 percent of original size [2021-04-16 07:00:22,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 07:00:22,418 INFO L142 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size [2021-04-16 07:00:22,419 INFO L147 QuantifierPusher]: treesize reduction 9, result has 75.7 percent of original size 28 [2021-04-16 07:00:22,456 INFO L142 QuantifierPusher]: treesize reduction 24, result has 92.1 percent of original size [2021-04-16 07:00:22,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 278 [2021-04-16 07:00:22,567 INFO L142 QuantifierPusher]: treesize reduction 35, result has 92.9 percent of original size [2021-04-16 07:00:22,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 455 [2021-04-16 07:00:22,693 INFO L142 QuantifierPusher]: treesize reduction 75, result has 90.9 percent of original size [2021-04-16 07:00:22,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 749 [2021-04-16 07:00:22,842 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 42 [2021-04-16 07:00:22,846 INFO L142 QuantifierPusher]: treesize reduction 76, result has 91.5 percent of original size [2021-04-16 07:00:22,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 814 [2021-04-16 07:00:23,005 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 38 [2021-04-16 07:00:23,007 INFO L142 QuantifierPusher]: treesize reduction 38, result has 91.8 percent of original size [2021-04-16 07:00:23,009 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.9 percent of original size 417 [2021-04-16 07:00:23,101 INFO L142 QuantifierPusher]: treesize reduction 40, result has 38.5 percent of original size [2021-04-16 07:00:23,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 07:00:23,123 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 07:00:23,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 07:00:23,143 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 07:00:23,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 07:00:23,169 INFO L142 QuantifierPusher]: treesize reduction 17, result has 58.5 percent of original size [2021-04-16 07:00:23,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:23,194 INFO L142 QuantifierPusher]: treesize reduction 42, result has 90.0 percent of original size [2021-04-16 07:00:23,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 380 [2021-04-16 07:00:23,294 INFO L142 QuantifierPusher]: treesize reduction 67, result has 85.7 percent of original size [2021-04-16 07:00:23,295 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.8 percent of original size 393 [2021-04-16 07:00:23,397 INFO L142 QuantifierPusher]: treesize reduction 75, result has 89.5 percent of original size [2021-04-16 07:00:23,399 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.6 percent of original size 632 [2021-04-16 07:00:23,532 INFO L142 QuantifierPusher]: treesize reduction 101, result has 86.2 percent of original size [2021-04-16 07:00:23,534 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.6 percent of original size 623 [2021-04-16 07:00:23,655 INFO L142 QuantifierPusher]: treesize reduction 103, result has 85.9 percent of original size [2021-04-16 07:00:23,657 INFO L147 QuantifierPusher]: treesize reduction 31, result has 95.1 percent of original size 596 [2021-04-16 07:00:23,661 INFO L142 QuantifierPusher]: treesize reduction 113, result has 72.5 percent of original size [2021-04-16 07:00:23,662 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.0 percent of original size 289 [2021-04-16 07:00:23,665 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 07:00:23,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:23,665 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 07:00:23,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:23,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:23,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:23,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:00:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:00:23,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:23,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:00:23,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422347009] [2021-04-16 07:00:23,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:00:23,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 07:00:23,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340214966] [2021-04-16 07:00:23,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 07:00:23,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:00:23,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 07:00:23,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-04-16 07:00:23,696 INFO L87 Difference]: Start difference. First operand 2027 states and 2334 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:00:38,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:00:38,925 INFO L93 Difference]: Finished difference Result 4145 states and 4775 transitions. [2021-04-16 07:00:38,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 07:00:38,926 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 2 states have call successors, (3), 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 114 [2021-04-16 07:00:38,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:00:38,929 INFO L225 Difference]: With dead ends: 4145 [2021-04-16 07:00:38,930 INFO L226 Difference]: Without dead ends: 3972 [2021-04-16 07:00:38,930 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1710.5ms TimeCoverageRelationStatistics Valid=216, Invalid=974, Unknown=0, NotChecked=0, Total=1190 [2021-04-16 07:00:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2021-04-16 07:00:48,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 2977. [2021-04-16 07:00:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2972 states have (on average 1.1473755047106327) internal successors, (3410), 2972 states have internal predecessors, (3410), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:00:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 3414 transitions. [2021-04-16 07:00:48,861 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 3414 transitions. Word has length 114 [2021-04-16 07:00:48,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:00:48,861 INFO L480 AbstractCegarLoop]: Abstraction has 2977 states and 3414 transitions. [2021-04-16 07:00:48,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:00:48,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 3414 transitions. [2021-04-16 07:00:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-04-16 07:00:48,864 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:00:48,864 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:00:48,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-04-16 07:00:48,864 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:00:48,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:00:48,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1510268232, now seen corresponding path program 60 times [2021-04-16 07:00:48,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:00:48,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275826136] [2021-04-16 07:00:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:00:48,869 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 07:00:48,869 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:00:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:00:48,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:48,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:48,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:48,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:00:48,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:48,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 07:00:48,997 INFO L142 QuantifierPusher]: treesize reduction 15, result has 91.2 percent of original size [2021-04-16 07:00:48,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-04-16 07:00:49,071 INFO L142 QuantifierPusher]: treesize reduction 30, result has 90.2 percent of original size [2021-04-16 07:00:49,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-04-16 07:00:49,153 INFO L142 QuantifierPusher]: treesize reduction 58, result has 89.2 percent of original size [2021-04-16 07:00:49,155 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.1 percent of original size 469 [2021-04-16 07:00:49,253 INFO L142 QuantifierPusher]: treesize reduction 59, result has 90.2 percent of original size [2021-04-16 07:00:49,255 INFO L147 QuantifierPusher]: treesize reduction 9, result has 98.3 percent of original size 536 [2021-04-16 07:00:49,362 INFO L142 QuantifierPusher]: treesize reduction 30, result has 83.3 percent of original size [2021-04-16 07:00:49,363 INFO L147 QuantifierPusher]: treesize reduction 9, result has 94.0 percent of original size 141 [2021-04-16 07:00:49,423 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-04-16 07:00:49,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 07:00:49,438 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-04-16 07:00:49,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 07:00:49,455 INFO L142 QuantifierPusher]: treesize reduction 21, result has 89.6 percent of original size [2021-04-16 07:00:49,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-04-16 07:00:49,524 INFO L142 QuantifierPusher]: treesize reduction 37, result has 73.8 percent of original size [2021-04-16 07:00:49,524 INFO L147 QuantifierPusher]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-04-16 07:00:49,544 INFO L142 QuantifierPusher]: treesize reduction 45, result has 88.5 percent of original size [2021-04-16 07:00:49,546 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.4 percent of original size 336 [2021-04-16 07:00:49,646 INFO L142 QuantifierPusher]: treesize reduction 88, result has 78.1 percent of original size [2021-04-16 07:00:49,648 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.1 percent of original size 305 [2021-04-16 07:00:49,705 INFO L142 QuantifierPusher]: treesize reduction 88, result has 77.9 percent of original size [2021-04-16 07:00:49,707 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.1 percent of original size 302 [2021-04-16 07:00:49,709 INFO L142 QuantifierPusher]: treesize reduction 36, result has 56.6 percent of original size [2021-04-16 07:00:49,710 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.9 percent of original size 38 [2021-04-16 07:00:49,711 INFO L142 QuantifierPusher]: treesize reduction 23, result has 4.2 percent of original size [2021-04-16 07:00:49,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:49,712 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 07:00:49,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:49,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:49,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:49,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:00:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:00:49,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:49,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:49,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:00:49,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275826136] [2021-04-16 07:00:49,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:00:49,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 07:00:49,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738994523] [2021-04-16 07:00:49,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 07:00:49,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:00:49,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 07:00:49,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-04-16 07:00:49,737 INFO L87 Difference]: Start difference. First operand 2977 states and 3414 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:01:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:01:04,357 INFO L93 Difference]: Finished difference Result 4543 states and 5163 transitions. [2021-04-16 07:01:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 07:01:04,358 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 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 114 [2021-04-16 07:01:04,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:01:04,361 INFO L225 Difference]: With dead ends: 4543 [2021-04-16 07:01:04,361 INFO L226 Difference]: Without dead ends: 4192 [2021-04-16 07:01:04,362 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 793.0ms TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-04-16 07:01:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states.