/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:18:16,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:18:16,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:18:16,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:18:16,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:18:16,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:18:16,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:18:16,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:18:16,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:18:16,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:18:16,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:18:16,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:18:16,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:18:16,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:18:16,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:18:16,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:18:16,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:18:16,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:18:16,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:18:16,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:18:16,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:18:16,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:18:16,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:18:16,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:18:16,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:18:16,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:18:16,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:18:16,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:18:16,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:18:16,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:18:16,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:18:16,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:18:16,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:18:16,894 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:18:16,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:18:16,895 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:18:16,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:18:16,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:18:16,895 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:18:16,896 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:18:16,896 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:18:16,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:18:16,896 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:18:16,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:18:16,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:18:16,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:18:16,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:18:16,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:18:16,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:18:16,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:18:16,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:18:16,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:18:16,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:18:16,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:18:17,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:18:17,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:18:17,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:18:17,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:18:17,318 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:18:17,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2020-12-22 19:18:17,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575717869/9cd7a82031934d49a41c9ec0664c4096/FLAG58e9a25ea [2020-12-22 19:18:18,153 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:18:18,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2020-12-22 19:18:18,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575717869/9cd7a82031934d49a41c9ec0664c4096/FLAG58e9a25ea [2020-12-22 19:18:18,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575717869/9cd7a82031934d49a41c9ec0664c4096 [2020-12-22 19:18:18,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:18:18,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:18:18,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:18:18,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:18:18,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:18:18,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b30749d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18, skipping insertion in model container [2020-12-22 19:18:18,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:18:18,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:18:18,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:18:18,742 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:18:18,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:18:18,788 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:18:18,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18 WrapperNode [2020-12-22 19:18:18,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:18:18,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:18:18,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:18:18,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:18:18,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:18:18,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:18:18,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:18:18,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:18:18,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (1/1) ... [2020-12-22 19:18:18,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:18:18,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:18:18,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:18:18,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:18:18,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (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 [2020-12-22 19:18:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:18:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:18:18,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:18:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:18:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:18:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:18:19,361 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:18:19,362 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 19:18:19,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:18:19 BoogieIcfgContainer [2020-12-22 19:18:19,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:18:19,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:18:19,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:18:19,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:18:19,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:18:18" (1/3) ... [2020-12-22 19:18:19,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1d9d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:18:19, skipping insertion in model container [2020-12-22 19:18:19,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:18" (2/3) ... [2020-12-22 19:18:19,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1d9d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:18:19, skipping insertion in model container [2020-12-22 19:18:19,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:18:19" (3/3) ... [2020-12-22 19:18:19,391 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_-write.c [2020-12-22 19:18:19,402 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:18:19,410 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 19:18:19,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 19:18:19,503 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:18:19,506 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:18:19,506 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:18:19,507 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:18:19,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:18:19,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:18:19,507 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:18:19,507 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:18:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-22 19:18:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:18:19,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:19,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:18:19,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:19,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:19,560 INFO L82 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2020-12-22 19:18:19,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:19,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031173327] [2020-12-22 19:18:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:19,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031173327] [2020-12-22 19:18:19,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:19,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:18:19,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278235846] [2020-12-22 19:18:19,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:19,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:19,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:19,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:19,793 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-12-22 19:18:19,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:19,852 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-12-22 19:18:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:19,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 19:18:19,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:19,866 INFO L225 Difference]: With dead ends: 59 [2020-12-22 19:18:19,866 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 19:18:19,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 19:18:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2020-12-22 19:18:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 19:18:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-12-22 19:18:19,921 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 5 [2020-12-22 19:18:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:19,922 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-12-22 19:18:19,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:19,922 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-12-22 19:18:19,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:18:19,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:19,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:18:19,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:18:19,925 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:19,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:19,930 INFO L82 PathProgramCache]: Analyzing trace with hash 889631015, now seen corresponding path program 1 times [2020-12-22 19:18:19,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:19,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411212327] [2020-12-22 19:18:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:19,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411212327] [2020-12-22 19:18:19,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:19,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:19,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339709192] [2020-12-22 19:18:19,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:19,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:19,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:19,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:19,998 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 3 states. [2020-12-22 19:18:20,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:20,046 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-12-22 19:18:20,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:20,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 19:18:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:20,048 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:18:20,048 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 19:18:20,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:20,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 19:18:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2020-12-22 19:18:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:18:20,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 19:18:20,055 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 19:18:20,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:20,056 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 19:18:20,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 19:18:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:18:20,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:20,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:18:20,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:18:20,057 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:20,058 INFO L82 PathProgramCache]: Analyzing trace with hash 889666573, now seen corresponding path program 1 times [2020-12-22 19:18:20,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:20,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52543926] [2020-12-22 19:18:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:20,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52543926] [2020-12-22 19:18:20,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:20,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:20,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381882085] [2020-12-22 19:18:20,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:20,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:20,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:20,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:20,129 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-22 19:18:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:20,195 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-12-22 19:18:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:20,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 19:18:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:20,199 INFO L225 Difference]: With dead ends: 32 [2020-12-22 19:18:20,199 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 19:18:20,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 19:18:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 19:18:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 19:18:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-12-22 19:18:20,217 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2020-12-22 19:18:20,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:20,218 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-12-22 19:18:20,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:20,218 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-12-22 19:18:20,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:18:20,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:20,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:18:20,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:18:20,223 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:20,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:20,224 INFO L82 PathProgramCache]: Analyzing trace with hash 889666574, now seen corresponding path program 1 times [2020-12-22 19:18:20,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:20,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937640955] [2020-12-22 19:18:20,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:20,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937640955] [2020-12-22 19:18:20,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:20,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:20,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791688415] [2020-12-22 19:18:20,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:20,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:20,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:20,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:20,301 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2020-12-22 19:18:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:20,382 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-12-22 19:18:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:18:20,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 19:18:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:20,384 INFO L225 Difference]: With dead ends: 55 [2020-12-22 19:18:20,384 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 19:18:20,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 19:18:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2020-12-22 19:18:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:18:20,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 19:18:20,390 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 19:18:20,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:20,390 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 19:18:20,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:20,390 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 19:18:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:18:20,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:20,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:20,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:18:20,392 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:20,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:20,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1809810359, now seen corresponding path program 1 times [2020-12-22 19:18:20,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:20,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980710993] [2020-12-22 19:18:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:20,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980710993] [2020-12-22 19:18:20,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:20,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:18:20,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735008015] [2020-12-22 19:18:20,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:20,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:20,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:20,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:20,440 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-22 19:18:20,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:20,514 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-12-22 19:18:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:20,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 19:18:20,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:20,516 INFO L225 Difference]: With dead ends: 60 [2020-12-22 19:18:20,516 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 19:18:20,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:20,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 19:18:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2020-12-22 19:18:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 19:18:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-12-22 19:18:20,521 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 7 [2020-12-22 19:18:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:20,522 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-12-22 19:18:20,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-12-22 19:18:20,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:18:20,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:20,523 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:20,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:18:20,523 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:20,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1480744241, now seen corresponding path program 1 times [2020-12-22 19:18:20,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:20,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013468977] [2020-12-22 19:18:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:20,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:20,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013468977] [2020-12-22 19:18:20,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697343691] [2020-12-22 19:18:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:20,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:18:20,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:20,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:20,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-12-22 19:18:20,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41752228] [2020-12-22 19:18:20,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:20,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:20,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:20,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:20,701 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-12-22 19:18:20,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:20,761 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-12-22 19:18:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:20,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 19:18:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:20,763 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:18:20,763 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 19:18:20,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 19:18:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 38. [2020-12-22 19:18:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-22 19:18:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-22 19:18:20,781 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 10 [2020-12-22 19:18:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:20,783 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-22 19:18:20,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-22 19:18:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:18:20,786 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:20,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:20,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 19:18:20,987 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:20,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1341568839, now seen corresponding path program 1 times [2020-12-22 19:18:20,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:20,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706037172] [2020-12-22 19:18:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:18:21,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706037172] [2020-12-22 19:18:21,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:21,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:18:21,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317506109] [2020-12-22 19:18:21,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:18:21,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:21,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:18:21,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:21,096 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-12-22 19:18:21,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:21,182 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-12-22 19:18:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:18:21,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 19:18:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:21,183 INFO L225 Difference]: With dead ends: 57 [2020-12-22 19:18:21,183 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 19:18:21,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:21,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 19:18:21,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 37. [2020-12-22 19:18:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 19:18:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-12-22 19:18:21,188 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 11 [2020-12-22 19:18:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:21,188 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-12-22 19:18:21,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:18:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-12-22 19:18:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:18:21,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:21,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:21,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:18:21,189 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:21,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1361088610, now seen corresponding path program 1 times [2020-12-22 19:18:21,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:21,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027551859] [2020-12-22 19:18:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:21,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027551859] [2020-12-22 19:18:21,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422671270] [2020-12-22 19:18:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:21,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:18:21,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:21,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:21,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 19:18:21,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708946598] [2020-12-22 19:18:21,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:18:21,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:18:21,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:21,361 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 8 states. [2020-12-22 19:18:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:21,525 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2020-12-22 19:18:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:18:21,525 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-22 19:18:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:21,526 INFO L225 Difference]: With dead ends: 70 [2020-12-22 19:18:21,526 INFO L226 Difference]: Without dead ends: 70 [2020-12-22 19:18:21,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:18:21,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-22 19:18:21,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 36. [2020-12-22 19:18:21,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 19:18:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-12-22 19:18:21,530 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 12 [2020-12-22 19:18:21,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:21,531 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-12-22 19:18:21,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:18:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-12-22 19:18:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:18:21,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:21,532 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 19:18:21,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:21,748 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:21,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:21,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2073745800, now seen corresponding path program 2 times [2020-12-22 19:18:21,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:21,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528681306] [2020-12-22 19:18:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:21,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528681306] [2020-12-22 19:18:21,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274287628] [2020-12-22 19:18:21,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:21,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:18:21,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:21,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:18:21,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:22,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:22,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2020-12-22 19:18:22,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407896601] [2020-12-22 19:18:22,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:18:22,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:22,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:18:22,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:18:22,014 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 6 states. [2020-12-22 19:18:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:22,127 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-12-22 19:18:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:18:22,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 19:18:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:22,129 INFO L225 Difference]: With dead ends: 83 [2020-12-22 19:18:22,129 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 19:18:22,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:18:22,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 19:18:22,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2020-12-22 19:18:22,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 19:18:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-12-22 19:18:22,134 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 15 [2020-12-22 19:18:22,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:22,134 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-12-22 19:18:22,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:18:22,135 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-12-22 19:18:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:18:22,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:22,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:22,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:22,352 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:22,354 INFO L82 PathProgramCache]: Analyzing trace with hash 4840471, now seen corresponding path program 2 times [2020-12-22 19:18:22,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:22,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850364355] [2020-12-22 19:18:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:18:22,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850364355] [2020-12-22 19:18:22,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:22,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:18:22,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744573441] [2020-12-22 19:18:22,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:22,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:22,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:22,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:22,451 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 3 states. [2020-12-22 19:18:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:22,480 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2020-12-22 19:18:22,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:22,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 19:18:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:22,482 INFO L225 Difference]: With dead ends: 45 [2020-12-22 19:18:22,482 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 19:18:22,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:22,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 19:18:22,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-22 19:18:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:18:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-12-22 19:18:22,487 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 17 [2020-12-22 19:18:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:22,488 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-12-22 19:18:22,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:22,490 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-12-22 19:18:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:18:22,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:22,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:22,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:18:22,491 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:22,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:22,492 INFO L82 PathProgramCache]: Analyzing trace with hash 4840472, now seen corresponding path program 1 times [2020-12-22 19:18:22,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:22,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713797765] [2020-12-22 19:18:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:18:22,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713797765] [2020-12-22 19:18:22,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:22,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:22,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644493783] [2020-12-22 19:18:22,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:22,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:22,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:22,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:22,618 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2020-12-22 19:18:22,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:22,655 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-12-22 19:18:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:22,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-22 19:18:22,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:22,657 INFO L225 Difference]: With dead ends: 50 [2020-12-22 19:18:22,657 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 19:18:22,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 19:18:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-12-22 19:18:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 19:18:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-12-22 19:18:22,661 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 17 [2020-12-22 19:18:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:22,663 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-12-22 19:18:22,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-12-22 19:18:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:18:22,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:22,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:22,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:18:22,665 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:22,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1949815299, now seen corresponding path program 1 times [2020-12-22 19:18:22,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:22,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239015767] [2020-12-22 19:18:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:18:22,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239015767] [2020-12-22 19:18:22,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758745562] [2020-12-22 19:18:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:22,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 19:18:22,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:18:22,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:22,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-12-22 19:18:22,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792837447] [2020-12-22 19:18:22,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:18:22,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:22,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:18:22,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:22,904 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 7 states. [2020-12-22 19:18:23,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:23,001 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-12-22 19:18:23,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:18:23,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-22 19:18:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:23,003 INFO L225 Difference]: With dead ends: 84 [2020-12-22 19:18:23,003 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 19:18:23,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 19:18:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 55. [2020-12-22 19:18:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 19:18:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-12-22 19:18:23,007 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 23 [2020-12-22 19:18:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:23,007 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-12-22 19:18:23,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:18:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-12-22 19:18:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:18:23,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:23,009 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:23,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:23,223 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:23,224 INFO L82 PathProgramCache]: Analyzing trace with hash 31456339, now seen corresponding path program 1 times [2020-12-22 19:18:23,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:23,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894512163] [2020-12-22 19:18:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:18:23,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894512163] [2020-12-22 19:18:23,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19096078] [2020-12-22 19:18:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:23,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:23,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:18:23,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:23,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-12-22 19:18:23,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726555465] [2020-12-22 19:18:23,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:18:23,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:23,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:18:23,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:23,436 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 5 states. [2020-12-22 19:18:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:23,493 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2020-12-22 19:18:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:18:23,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-12-22 19:18:23,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:23,496 INFO L225 Difference]: With dead ends: 85 [2020-12-22 19:18:23,496 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 19:18:23,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 19:18:23,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2020-12-22 19:18:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 19:18:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-12-22 19:18:23,513 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 32 [2020-12-22 19:18:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:23,513 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-12-22 19:18:23,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:18:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-12-22 19:18:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:18:23,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:23,519 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:23,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 19:18:23,736 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:23,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:23,737 INFO L82 PathProgramCache]: Analyzing trace with hash 164722723, now seen corresponding path program 1 times [2020-12-22 19:18:23,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:23,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548443644] [2020-12-22 19:18:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:18:23,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548443644] [2020-12-22 19:18:23,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104292805] [2020-12-22 19:18:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:23,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:18:23,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:18:24,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:24,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-12-22 19:18:24,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234422909] [2020-12-22 19:18:24,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:18:24,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:24,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:18:24,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:18:24,021 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 12 states. [2020-12-22 19:18:24,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:24,298 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-12-22 19:18:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:18:24,298 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-12-22 19:18:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:24,299 INFO L225 Difference]: With dead ends: 66 [2020-12-22 19:18:24,299 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 19:18:24,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:18:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 19:18:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-12-22 19:18:24,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 19:18:24,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-12-22 19:18:24,302 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 34 [2020-12-22 19:18:24,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:24,303 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-12-22 19:18:24,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:18:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-12-22 19:18:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 19:18:24,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:24,304 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:24,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:24,514 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:24,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:24,515 INFO L82 PathProgramCache]: Analyzing trace with hash -414723452, now seen corresponding path program 2 times [2020-12-22 19:18:24,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:24,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7554615] [2020-12-22 19:18:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:18:24,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7554615] [2020-12-22 19:18:24,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146081631] [2020-12-22 19:18:24,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:24,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:18:24,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:24,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:18:24,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 23 proven. 37 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:18:24,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:24,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-12-22 19:18:24,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508171614] [2020-12-22 19:18:24,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 19:18:24,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:24,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 19:18:24,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:18:24,844 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 14 states. [2020-12-22 19:18:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:25,205 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2020-12-22 19:18:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 19:18:25,206 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-12-22 19:18:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:25,207 INFO L225 Difference]: With dead ends: 118 [2020-12-22 19:18:25,207 INFO L226 Difference]: Without dead ends: 118 [2020-12-22 19:18:25,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:18:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-22 19:18:25,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 76. [2020-12-22 19:18:25,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 19:18:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-12-22 19:18:25,224 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 37 [2020-12-22 19:18:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:25,224 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-12-22 19:18:25,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 19:18:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-12-22 19:18:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 19:18:25,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:25,228 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:25,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 19:18:25,430 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:25,431 INFO L82 PathProgramCache]: Analyzing trace with hash 882673172, now seen corresponding path program 2 times [2020-12-22 19:18:25,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:25,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43326856] [2020-12-22 19:18:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 19:18:25,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43326856] [2020-12-22 19:18:25,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925848952] [2020-12-22 19:18:25,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:25,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:18:25,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:25,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:18:25,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:25,678 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_10|], 1=[|v_#valid_20|]} [2020-12-22 19:18:25,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:25,695 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:18:25,696 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:25,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:25,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:25,717 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-12-22 19:18:25,719 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:25,728 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:25,730 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:18:25,730 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2020-12-22 19:18:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 19:18:25,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:25,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2020-12-22 19:18:25,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037012474] [2020-12-22 19:18:25,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:18:25,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:25,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:18:25,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:18:25,953 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 5 states. [2020-12-22 19:18:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:26,025 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2020-12-22 19:18:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:18:26,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-22 19:18:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:26,026 INFO L225 Difference]: With dead ends: 75 [2020-12-22 19:18:26,027 INFO L226 Difference]: Without dead ends: 75 [2020-12-22 19:18:26,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:18:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-22 19:18:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-12-22 19:18:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 19:18:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-12-22 19:18:26,030 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 39 [2020-12-22 19:18:26,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:26,030 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-12-22 19:18:26,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:18:26,030 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-12-22 19:18:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 19:18:26,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:26,031 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:26,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 19:18:26,238 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:26,239 INFO L82 PathProgramCache]: Analyzing trace with hash 268859179, now seen corresponding path program 1 times [2020-12-22 19:18:26,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:26,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987650241] [2020-12-22 19:18:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 19:18:26,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987650241] [2020-12-22 19:18:26,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431761395] [2020-12-22 19:18:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:26,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:18:26,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 19:18:26,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:26,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2020-12-22 19:18:26,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643219631] [2020-12-22 19:18:26,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:18:26,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:26,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:18:26,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:26,464 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 8 states. [2020-12-22 19:18:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:26,540 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2020-12-22 19:18:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:18:26,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-12-22 19:18:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:26,542 INFO L225 Difference]: With dead ends: 119 [2020-12-22 19:18:26,542 INFO L226 Difference]: Without dead ends: 119 [2020-12-22 19:18:26,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-22 19:18:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 84. [2020-12-22 19:18:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:18:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-12-22 19:18:26,549 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 48 [2020-12-22 19:18:26,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:26,549 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-12-22 19:18:26,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:18:26,550 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-12-22 19:18:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 19:18:26,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:26,552 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-22 19:18:26,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 19:18:26,767 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:26,768 INFO L82 PathProgramCache]: Analyzing trace with hash 524134016, now seen corresponding path program 3 times [2020-12-22 19:18:26,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:26,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522869423] [2020-12-22 19:18:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 93 proven. 21 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-12-22 19:18:26,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522869423] [2020-12-22 19:18:26,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549249] [2020-12-22 19:18:26,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:26,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 19:18:26,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:26,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:26,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 93 proven. 21 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-12-22 19:18:27,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:27,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2020-12-22 19:18:27,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700060297] [2020-12-22 19:18:27,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:18:27,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:27,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:18:27,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:18:27,065 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 11 states. [2020-12-22 19:18:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:27,175 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-12-22 19:18:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:18:27,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-12-22 19:18:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:27,177 INFO L225 Difference]: With dead ends: 116 [2020-12-22 19:18:27,177 INFO L226 Difference]: Without dead ends: 116 [2020-12-22 19:18:27,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:18:27,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-22 19:18:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 89. [2020-12-22 19:18:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:18:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2020-12-22 19:18:27,180 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 59 [2020-12-22 19:18:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:27,181 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2020-12-22 19:18:27,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:18:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2020-12-22 19:18:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 19:18:27,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:27,182 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-22 19:18:27,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 19:18:27,392 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:27,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash 11435127, now seen corresponding path program 4 times [2020-12-22 19:18:27,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:27,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79027883] [2020-12-22 19:18:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 117 proven. 102 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:18:27,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79027883] [2020-12-22 19:18:27,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999357031] [2020-12-22 19:18:27,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:27,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:18:27,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:27,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:18:27,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 43 proven. 159 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 19:18:27,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:27,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 19 [2020-12-22 19:18:27,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957254647] [2020-12-22 19:18:27,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:18:27,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:27,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:18:27,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:18:27,866 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand 19 states. [2020-12-22 19:18:28,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:28,685 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2020-12-22 19:18:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 19:18:28,685 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-12-22 19:18:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:28,687 INFO L225 Difference]: With dead ends: 173 [2020-12-22 19:18:28,687 INFO L226 Difference]: Without dead ends: 173 [2020-12-22 19:18:28,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 19:18:28,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-22 19:18:28,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 110. [2020-12-22 19:18:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 19:18:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions. [2020-12-22 19:18:28,691 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 64 [2020-12-22 19:18:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:28,692 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 117 transitions. [2020-12-22 19:18:28,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:18:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions. [2020-12-22 19:18:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 19:18:28,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:28,693 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:28,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:28,908 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:28,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:28,909 INFO L82 PathProgramCache]: Analyzing trace with hash -827578536, now seen corresponding path program 2 times [2020-12-22 19:18:28,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:28,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125557308] [2020-12-22 19:18:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-12-22 19:18:29,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125557308] [2020-12-22 19:18:29,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262502374] [2020-12-22 19:18:29,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:29,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:18:29,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:29,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:18:29,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-12-22 19:18:29,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:29,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2020-12-22 19:18:29,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955243296] [2020-12-22 19:18:29,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:29,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:29,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:29,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:18:29,252 INFO L87 Difference]: Start difference. First operand 110 states and 117 transitions. Second operand 4 states. [2020-12-22 19:18:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:29,278 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions. [2020-12-22 19:18:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:29,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 19:18:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:29,280 INFO L225 Difference]: With dead ends: 109 [2020-12-22 19:18:29,280 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 19:18:29,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:18:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 19:18:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-22 19:18:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 19:18:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-12-22 19:18:29,283 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 75 [2020-12-22 19:18:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:29,283 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-12-22 19:18:29,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-12-22 19:18:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 19:18:29,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:29,284 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2020-12-22 19:18:29,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:29,490 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:29,490 INFO L82 PathProgramCache]: Analyzing trace with hash -875547996, now seen corresponding path program 5 times [2020-12-22 19:18:29,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:29,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940440557] [2020-12-22 19:18:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 213 proven. 38 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-12-22 19:18:29,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940440557] [2020-12-22 19:18:29,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655479587] [2020-12-22 19:18:29,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:29,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-22 19:18:29,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:29,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:18:29,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 213 proven. 38 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-12-22 19:18:29,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:29,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 7 [2020-12-22 19:18:29,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76003201] [2020-12-22 19:18:29,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:18:29,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:29,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:18:29,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:29,858 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 8 states. [2020-12-22 19:18:30,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:30,006 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2020-12-22 19:18:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:18:30,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-12-22 19:18:30,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:30,007 INFO L225 Difference]: With dead ends: 106 [2020-12-22 19:18:30,007 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 19:18:30,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:30,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 19:18:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2020-12-22 19:18:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-22 19:18:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-12-22 19:18:30,011 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 91 [2020-12-22 19:18:30,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:30,011 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-12-22 19:18:30,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:18:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-12-22 19:18:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 19:18:30,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:30,012 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2020-12-22 19:18:30,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 19:18:30,227 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:30,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:30,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2092833069, now seen corresponding path program 6 times [2020-12-22 19:18:30,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:30,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645608205] [2020-12-22 19:18:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 318 proven. 165 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-12-22 19:18:30,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645608205] [2020-12-22 19:18:30,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052314958] [2020-12-22 19:18:30,484 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:30,606 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-22 19:18:30,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:30,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:18:30,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 17 proven. 438 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-12-22 19:18:30,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:30,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 21 [2020-12-22 19:18:30,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369367424] [2020-12-22 19:18:30,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 19:18:30,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:30,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 19:18:30,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:18:30,829 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 21 states. [2020-12-22 19:18:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:31,936 INFO L93 Difference]: Finished difference Result 138 states and 144 transitions. [2020-12-22 19:18:31,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 19:18:31,938 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 96 [2020-12-22 19:18:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:31,941 INFO L225 Difference]: With dead ends: 138 [2020-12-22 19:18:31,941 INFO L226 Difference]: Without dead ends: 138 [2020-12-22 19:18:31,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=507, Invalid=1655, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 19:18:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-22 19:18:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2020-12-22 19:18:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-22 19:18:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2020-12-22 19:18:31,952 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 96 [2020-12-22 19:18:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:31,952 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2020-12-22 19:18:31,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 19:18:31,953 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2020-12-22 19:18:31,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 19:18:31,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:31,954 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2020-12-22 19:18:32,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:32,169 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:32,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:32,170 INFO L82 PathProgramCache]: Analyzing trace with hash -2026577617, now seen corresponding path program 7 times [2020-12-22 19:18:32,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:32,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475137027] [2020-12-22 19:18:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 402 proven. 60 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2020-12-22 19:18:32,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475137027] [2020-12-22 19:18:32,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858722808] [2020-12-22 19:18:32,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:32,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:18:32,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 402 proven. 60 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2020-12-22 19:18:32,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:32,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-12-22 19:18:32,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450370918] [2020-12-22 19:18:32,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:18:32,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:32,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:18:32,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:32,513 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand 8 states. [2020-12-22 19:18:32,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:32,746 INFO L93 Difference]: Finished difference Result 143 states and 150 transitions. [2020-12-22 19:18:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:18:32,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-12-22 19:18:32,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:32,748 INFO L225 Difference]: With dead ends: 143 [2020-12-22 19:18:32,748 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 19:18:32,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 19:18:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 134. [2020-12-22 19:18:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-22 19:18:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 141 transitions. [2020-12-22 19:18:32,752 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 141 transitions. Word has length 128 [2020-12-22 19:18:32,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:32,753 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 141 transitions. [2020-12-22 19:18:32,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:18:32,753 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 141 transitions. [2020-12-22 19:18:32,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 19:18:32,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:32,754 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2020-12-22 19:18:32,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 19:18:32,968 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:32,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:32,969 INFO L82 PathProgramCache]: Analyzing trace with hash 516658984, now seen corresponding path program 8 times [2020-12-22 19:18:32,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:32,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955608802] [2020-12-22 19:18:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 646 proven. 243 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-12-22 19:18:33,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955608802] [2020-12-22 19:18:33,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388978126] [2020-12-22 19:18:33,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:33,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:18:33,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:33,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 19:18:33,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 101 proven. 905 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-12-22 19:18:33,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:33,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 27 [2020-12-22 19:18:33,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207260978] [2020-12-22 19:18:33,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-22 19:18:33,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:33,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-22 19:18:33,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:18:33,764 INFO L87 Difference]: Start difference. First operand 134 states and 141 transitions. Second operand 27 states. [2020-12-22 19:18:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:35,340 INFO L93 Difference]: Finished difference Result 198 states and 208 transitions. [2020-12-22 19:18:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-22 19:18:35,341 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 133 [2020-12-22 19:18:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:35,342 INFO L225 Difference]: With dead ends: 198 [2020-12-22 19:18:35,342 INFO L226 Difference]: Without dead ends: 198 [2020-12-22 19:18:35,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=745, Invalid=3037, Unknown=0, NotChecked=0, Total=3782 [2020-12-22 19:18:35,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-22 19:18:35,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 171. [2020-12-22 19:18:35,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-12-22 19:18:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 181 transitions. [2020-12-22 19:18:35,349 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 181 transitions. Word has length 133 [2020-12-22 19:18:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:35,350 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 181 transitions. [2020-12-22 19:18:35,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-22 19:18:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 181 transitions. [2020-12-22 19:18:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 19:18:35,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:35,352 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1] [2020-12-22 19:18:35,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:35,566 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:35,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1358817267, now seen corresponding path program 9 times [2020-12-22 19:18:35,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:35,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807468053] [2020-12-22 19:18:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 675 proven. 87 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2020-12-22 19:18:35,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807468053] [2020-12-22 19:18:35,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226007425] [2020-12-22 19:18:35,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:35,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-22 19:18:35,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:35,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:18:35,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 675 proven. 87 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2020-12-22 19:18:36,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:36,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2020-12-22 19:18:36,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286868812] [2020-12-22 19:18:36,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:18:36,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:36,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:18:36,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:18:36,262 INFO L87 Difference]: Start difference. First operand 171 states and 181 transitions. Second operand 17 states. [2020-12-22 19:18:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:36,454 INFO L93 Difference]: Finished difference Result 185 states and 196 transitions. [2020-12-22 19:18:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:18:36,455 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-12-22 19:18:36,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:36,456 INFO L225 Difference]: With dead ends: 185 [2020-12-22 19:18:36,456 INFO L226 Difference]: Without dead ends: 185 [2020-12-22 19:18:36,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:18:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-22 19:18:36,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 176. [2020-12-22 19:18:36,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-22 19:18:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 187 transitions. [2020-12-22 19:18:36,462 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 187 transitions. Word has length 170 [2020-12-22 19:18:36,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:36,462 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 187 transitions. [2020-12-22 19:18:36,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:18:36,462 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 187 transitions. [2020-12-22 19:18:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-22 19:18:36,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:36,464 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1] [2020-12-22 19:18:36,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:18:36,679 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:36,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1775490332, now seen corresponding path program 10 times [2020-12-22 19:18:36,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:36,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441995827] [2020-12-22 19:18:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 1131 proven. 336 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2020-12-22 19:18:37,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441995827] [2020-12-22 19:18:37,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728750848] [2020-12-22 19:18:37,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:37,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:18:37,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:37,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 19:18:37,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 139 proven. 1690 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-12-22 19:18:37,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:37,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 31 [2020-12-22 19:18:37,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789140129] [2020-12-22 19:18:37,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-22 19:18:37,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:37,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-22 19:18:37,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2020-12-22 19:18:37,757 INFO L87 Difference]: Start difference. First operand 176 states and 187 transitions. Second operand 31 states. [2020-12-22 19:18:39,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:39,907 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2020-12-22 19:18:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-12-22 19:18:39,907 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 175 [2020-12-22 19:18:39,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:39,910 INFO L225 Difference]: With dead ends: 251 [2020-12-22 19:18:39,910 INFO L226 Difference]: Without dead ends: 251 [2020-12-22 19:18:39,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1092, Invalid=4760, Unknown=0, NotChecked=0, Total=5852 [2020-12-22 19:18:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-12-22 19:18:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 218. [2020-12-22 19:18:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-22 19:18:39,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 233 transitions. [2020-12-22 19:18:39,919 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 233 transitions. Word has length 175 [2020-12-22 19:18:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:39,920 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 233 transitions. [2020-12-22 19:18:39,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-22 19:18:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 233 transitions. [2020-12-22 19:18:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 19:18:39,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:39,923 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1] [2020-12-22 19:18:40,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 19:18:40,139 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:40,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1003334752, now seen corresponding path program 11 times [2020-12-22 19:18:40,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:40,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735034067] [2020-12-22 19:18:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3194 backedges. 1047 proven. 119 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2020-12-22 19:18:40,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735034067] [2020-12-22 19:18:40,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86727388] [2020-12-22 19:18:40,368 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:40,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2020-12-22 19:18:40,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:40,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 19:18:40,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3194 backedges. 1047 proven. 119 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2020-12-22 19:18:40,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:40,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 10 [2020-12-22 19:18:40,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180940072] [2020-12-22 19:18:40,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:18:40,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:40,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:18:40,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:18:40,989 INFO L87 Difference]: Start difference. First operand 218 states and 233 transitions. Second operand 11 states. [2020-12-22 19:18:41,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:41,399 INFO L93 Difference]: Finished difference Result 232 states and 248 transitions. [2020-12-22 19:18:41,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:18:41,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 217 [2020-12-22 19:18:41,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:41,402 INFO L225 Difference]: With dead ends: 232 [2020-12-22 19:18:41,402 INFO L226 Difference]: Without dead ends: 232 [2020-12-22 19:18:41,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:18:41,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-12-22 19:18:41,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 223. [2020-12-22 19:18:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-12-22 19:18:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 239 transitions. [2020-12-22 19:18:41,408 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 239 transitions. Word has length 217 [2020-12-22 19:18:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:41,409 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 239 transitions. [2020-12-22 19:18:41,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:18:41,409 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 239 transitions. [2020-12-22 19:18:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-12-22 19:18:41,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:41,412 INFO L422 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1] [2020-12-22 19:18:41,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 19:18:41,626 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:41,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:41,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1053228201, now seen corresponding path program 12 times [2020-12-22 19:18:41,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:41,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754433961] [2020-12-22 19:18:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3372 backedges. 1803 proven. 444 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2020-12-22 19:18:42,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754433961] [2020-12-22 19:18:42,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366382813] [2020-12-22 19:18:42,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:42,265 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2020-12-22 19:18:42,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:42,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:18:42,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3372 backedges. 29 proven. 2917 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2020-12-22 19:18:42,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:42,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 30 [2020-12-22 19:18:42,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867389130] [2020-12-22 19:18:42,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 19:18:42,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:42,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 19:18:42,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:18:42,721 INFO L87 Difference]: Start difference. First operand 223 states and 239 transitions. Second operand 30 states. [2020-12-22 19:18:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:45,733 INFO L93 Difference]: Finished difference Result 279 states and 300 transitions. [2020-12-22 19:18:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-12-22 19:18:45,734 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 222 [2020-12-22 19:18:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:45,737 INFO L225 Difference]: With dead ends: 279 [2020-12-22 19:18:45,737 INFO L226 Difference]: Without dead ends: 279 [2020-12-22 19:18:45,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1647, Invalid=5663, Unknown=0, NotChecked=0, Total=7310 [2020-12-22 19:18:45,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-12-22 19:18:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 270. [2020-12-22 19:18:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-22 19:18:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 291 transitions. [2020-12-22 19:18:45,745 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 291 transitions. Word has length 222 [2020-12-22 19:18:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:45,746 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 291 transitions. [2020-12-22 19:18:45,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 19:18:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 291 transitions. [2020-12-22 19:18:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-12-22 19:18:45,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:45,750 INFO L422 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1] [2020-12-22 19:18:45,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 19:18:45,964 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:45,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:45,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1152916860, now seen corresponding path program 13 times [2020-12-22 19:18:45,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:45,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814252622] [2020-12-22 19:18:45,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5063 backedges. 1533 proven. 156 refuted. 0 times theorem prover too weak. 3374 trivial. 0 not checked. [2020-12-22 19:18:46,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814252622] [2020-12-22 19:18:46,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688210602] [2020-12-22 19:18:46,259 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:46,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 19:18:46,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5063 backedges. 1533 proven. 156 refuted. 0 times theorem prover too weak. 3374 trivial. 0 not checked. [2020-12-22 19:18:46,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:46,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-12-22 19:18:46,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926768837] [2020-12-22 19:18:46,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:18:46,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:46,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:18:46,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:18:46,745 INFO L87 Difference]: Start difference. First operand 270 states and 291 transitions. Second operand 11 states. [2020-12-22 19:18:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:47,168 INFO L93 Difference]: Finished difference Result 284 states and 306 transitions. [2020-12-22 19:18:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:18:47,168 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 269 [2020-12-22 19:18:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:47,170 INFO L225 Difference]: With dead ends: 284 [2020-12-22 19:18:47,170 INFO L226 Difference]: Without dead ends: 284 [2020-12-22 19:18:47,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:18:47,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-12-22 19:18:47,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 275. [2020-12-22 19:18:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-12-22 19:18:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 297 transitions. [2020-12-22 19:18:47,176 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 297 transitions. Word has length 269 [2020-12-22 19:18:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:47,177 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 297 transitions. [2020-12-22 19:18:47,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:18:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 297 transitions. [2020-12-22 19:18:47,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-12-22 19:18:47,180 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:47,181 INFO L422 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1] [2020-12-22 19:18:47,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 19:18:47,394 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:47,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:47,395 INFO L82 PathProgramCache]: Analyzing trace with hash -998432013, now seen corresponding path program 14 times [2020-12-22 19:18:47,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:47,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632699408] [2020-12-22 19:18:47,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5287 backedges. 2692 proven. 567 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2020-12-22 19:18:47,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632699408] [2020-12-22 19:18:47,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139080286] [2020-12-22 19:18:47,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:48,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:18:48,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:48,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 19:18:48,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5287 backedges. 233 proven. 4599 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2020-12-22 19:18:49,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:49,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 39 [2020-12-22 19:18:49,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138536749] [2020-12-22 19:18:49,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-22 19:18:49,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:49,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-22 19:18:49,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1216, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 19:18:49,079 INFO L87 Difference]: Start difference. First operand 275 states and 297 transitions. Second operand 39 states. [2020-12-22 19:18:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:53,284 INFO L93 Difference]: Finished difference Result 372 states and 400 transitions. [2020-12-22 19:18:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-12-22 19:18:53,285 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 274 [2020-12-22 19:18:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:53,288 INFO L225 Difference]: With dead ends: 372 [2020-12-22 19:18:53,288 INFO L226 Difference]: Without dead ends: 372 [2020-12-22 19:18:53,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2039, Invalid=9951, Unknown=0, NotChecked=0, Total=11990 [2020-12-22 19:18:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-12-22 19:18:53,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 327. [2020-12-22 19:18:53,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-12-22 19:18:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 355 transitions. [2020-12-22 19:18:53,300 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 355 transitions. Word has length 274 [2020-12-22 19:18:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:53,301 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 355 transitions. [2020-12-22 19:18:53,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-22 19:18:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 355 transitions. [2020-12-22 19:18:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-12-22 19:18:53,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:53,303 INFO L422 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1] [2020-12-22 19:18:53,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:53,520 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:53,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:53,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1727796081, now seen corresponding path program 15 times [2020-12-22 19:18:53,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:53,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691940227] [2020-12-22 19:18:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:53,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7632 backedges. 2148 proven. 198 refuted. 0 times theorem prover too weak. 5286 trivial. 0 not checked. [2020-12-22 19:18:53,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691940227] [2020-12-22 19:18:53,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261120706] [2020-12-22 19:18:53,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:54,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-22 19:18:54,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:54,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:18:54,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7632 backedges. 2148 proven. 198 refuted. 0 times theorem prover too weak. 5286 trivial. 0 not checked. [2020-12-22 19:18:54,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:54,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2020-12-22 19:18:54,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634976528] [2020-12-22 19:18:54,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 19:18:54,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:54,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 19:18:54,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:18:54,846 INFO L87 Difference]: Start difference. First operand 327 states and 355 transitions. Second operand 23 states. [2020-12-22 19:18:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:55,387 INFO L93 Difference]: Finished difference Result 341 states and 370 transitions. [2020-12-22 19:18:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:18:55,388 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 326 [2020-12-22 19:18:55,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:55,395 INFO L225 Difference]: With dead ends: 341 [2020-12-22 19:18:55,395 INFO L226 Difference]: Without dead ends: 341 [2020-12-22 19:18:55,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:18:55,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-12-22 19:18:55,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 332. [2020-12-22 19:18:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-12-22 19:18:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 361 transitions. [2020-12-22 19:18:55,415 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 361 transitions. Word has length 326 [2020-12-22 19:18:55,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:55,416 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 361 transitions. [2020-12-22 19:18:55,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 19:18:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 361 transitions. [2020-12-22 19:18:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-12-22 19:18:55,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:55,420 INFO L422 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1] [2020-12-22 19:18:55,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 19:18:55,623 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:55,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1065134024, now seen corresponding path program 16 times [2020-12-22 19:18:55,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:55,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136271302] [2020-12-22 19:18:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7907 backedges. 3828 proven. 705 refuted. 0 times theorem prover too weak. 3374 trivial. 0 not checked. [2020-12-22 19:18:56,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136271302] [2020-12-22 19:18:56,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41574683] [2020-12-22 19:18:56,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:56,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:18:56,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:56,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 19:18:56,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7907 backedges. 289 proven. 6974 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2020-12-22 19:18:58,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:58,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 43 [2020-12-22 19:18:58,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327596646] [2020-12-22 19:18:58,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-22 19:18:58,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:58,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-22 19:18:58,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1486, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 19:18:58,018 INFO L87 Difference]: Start difference. First operand 332 states and 361 transitions. Second operand 43 states. [2020-12-22 19:19:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:19:03,616 INFO L93 Difference]: Finished difference Result 440 states and 476 transitions. [2020-12-22 19:19:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-12-22 19:19:03,617 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 331 [2020-12-22 19:19:03,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:19:03,620 INFO L225 Difference]: With dead ends: 440 [2020-12-22 19:19:03,621 INFO L226 Difference]: Without dead ends: 440 [2020-12-22 19:19:03,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4971 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2653, Invalid=13603, Unknown=0, NotChecked=0, Total=16256 [2020-12-22 19:19:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-12-22 19:19:03,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 389. [2020-12-22 19:19:03,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-12-22 19:19:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 425 transitions. [2020-12-22 19:19:03,638 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 425 transitions. Word has length 331 [2020-12-22 19:19:03,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:19:03,639 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 425 transitions. [2020-12-22 19:19:03,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-22 19:19:03,639 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 425 transitions. [2020-12-22 19:19:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 19:19:03,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:19:03,643 INFO L422 BasicCegarLoop]: trace histogram [65, 64, 64, 64, 64, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1] [2020-12-22 19:19:03,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:19:03,858 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:19:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:19:03,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1903304557, now seen corresponding path program 17 times [2020-12-22 19:19:03,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:19:03,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285516427] [2020-12-22 19:19:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:19:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:19:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11054 backedges. 2907 proven. 245 refuted. 0 times theorem prover too weak. 7902 trivial. 0 not checked. [2020-12-22 19:19:04,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285516427] [2020-12-22 19:19:04,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935712157] [2020-12-22 19:19:04,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:19:05,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2020-12-22 19:19:05,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:19:05,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 19:19:05,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:19:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 11054 backedges. 2907 proven. 245 refuted. 0 times theorem prover too weak. 7902 trivial. 0 not checked. [2020-12-22 19:19:06,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:19:06,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 13 [2020-12-22 19:19:06,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100224623] [2020-12-22 19:19:06,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 19:19:06,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:19:06,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 19:19:06,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:19:06,016 INFO L87 Difference]: Start difference. First operand 389 states and 425 transitions. Second operand 14 states. [2020-12-22 19:19:06,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:19:06,825 INFO L93 Difference]: Finished difference Result 403 states and 440 transitions. [2020-12-22 19:19:06,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:19:06,830 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 388 [2020-12-22 19:19:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:19:06,834 INFO L225 Difference]: With dead ends: 403 [2020-12-22 19:19:06,834 INFO L226 Difference]: Without dead ends: 403 [2020-12-22 19:19:06,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 385 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:19:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-22 19:19:06,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 394. [2020-12-22 19:19:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-22 19:19:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 431 transitions. [2020-12-22 19:19:06,844 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 431 transitions. Word has length 388 [2020-12-22 19:19:06,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:19:06,845 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 431 transitions. [2020-12-22 19:19:06,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 19:19:06,846 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 431 transitions. [2020-12-22 19:19:06,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 19:19:06,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:19:06,849 INFO L422 BasicCegarLoop]: trace histogram [66, 65, 65, 65, 65, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1] [2020-12-22 19:19:07,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 19:19:07,065 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:19:07,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:19:07,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1126263228, now seen corresponding path program 18 times [2020-12-22 19:19:07,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:19:07,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085528301] [2020-12-22 19:19:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:19:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:19:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 11385 backedges. 5241 proven. 858 refuted. 0 times theorem prover too weak. 5286 trivial. 0 not checked. [2020-12-22 19:19:07,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085528301] [2020-12-22 19:19:07,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26216142] [2020-12-22 19:19:07,976 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:19:08,506 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2020-12-22 19:19:08,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:19:08,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 19:19:08,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:19:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 11385 backedges. 3186 proven. 297 refuted. 0 times theorem prover too weak. 7902 trivial. 0 not checked. [2020-12-22 19:19:09,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:19:09,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 14] total 40 [2020-12-22 19:19:09,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225942486] [2020-12-22 19:19:09,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-22 19:19:09,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:19:09,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-22 19:19:09,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1237, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 19:19:09,495 INFO L87 Difference]: Start difference. First operand 394 states and 431 transitions. Second operand 40 states. [2020-12-22 19:19:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:19:12,882 INFO L93 Difference]: Finished difference Result 475 states and 521 transitions. [2020-12-22 19:19:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-12-22 19:19:12,883 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 393 [2020-12-22 19:19:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:19:12,887 INFO L225 Difference]: With dead ends: 475 [2020-12-22 19:19:12,887 INFO L226 Difference]: Without dead ends: 475 [2020-12-22 19:19:12,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1882, Invalid=6308, Unknown=0, NotChecked=0, Total=8190 [2020-12-22 19:19:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-12-22 19:19:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 461. [2020-12-22 19:19:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-12-22 19:19:12,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 507 transitions. [2020-12-22 19:19:12,900 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 507 transitions. Word has length 393 [2020-12-22 19:19:12,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:19:12,901 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 507 transitions. [2020-12-22 19:19:12,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-22 19:19:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 507 transitions. [2020-12-22 19:19:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-12-22 19:19:12,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:19:12,905 INFO L422 BasicCegarLoop]: trace histogram [78, 77, 77, 77, 77, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1] [2020-12-22 19:19:13,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-22 19:19:13,120 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:19:13,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:19:13,121 INFO L82 PathProgramCache]: Analyzing trace with hash 346445623, now seen corresponding path program 19 times [2020-12-22 19:19:13,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:19:13,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008951432] [2020-12-22 19:19:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:19:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:19:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15889 backedges. 6961 proven. 1026 refuted. 0 times theorem prover too weak. 7902 trivial. 0 not checked. [2020-12-22 19:19:14,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008951432] [2020-12-22 19:19:14,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981696594] [2020-12-22 19:19:14,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:19:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:19:14,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 19:19:14,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:19:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15889 backedges. 419 proven. 14305 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2020-12-22 19:19:16,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:19:16,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26] total 51 [2020-12-22 19:19:16,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574524915] [2020-12-22 19:19:16,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-12-22 19:19:16,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:19:16,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-12-22 19:19:16,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=2107, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 19:19:16,034 INFO L87 Difference]: Start difference. First operand 461 states and 507 transitions. Second operand 51 states. [2020-12-22 19:19:24,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:19:24,192 INFO L93 Difference]: Finished difference Result 591 states and 646 transitions. [2020-12-22 19:19:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2020-12-22 19:19:24,193 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 460 [2020-12-22 19:19:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:19:24,199 INFO L225 Difference]: With dead ends: 591 [2020-12-22 19:19:24,199 INFO L226 Difference]: Without dead ends: 591 [2020-12-22 19:19:24,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8891 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=4197, Invalid=23525, Unknown=0, NotChecked=0, Total=27722 [2020-12-22 19:19:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-12-22 19:19:24,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 528. [2020-12-22 19:19:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-12-22 19:19:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 583 transitions. [2020-12-22 19:19:24,213 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 583 transitions. Word has length 460 [2020-12-22 19:19:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:19:24,214 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 583 transitions. [2020-12-22 19:19:24,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-12-22 19:19:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 583 transitions. [2020-12-22 19:19:24,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-12-22 19:19:24,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:19:24,219 INFO L422 BasicCegarLoop]: trace histogram [90, 89, 89, 89, 89, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1] [2020-12-22 19:19:24,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 19:19:24,434 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:19:24,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:19:24,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2060638876, now seen corresponding path program 20 times [2020-12-22 19:19:24,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:19:24,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842326527] [2020-12-22 19:19:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:19:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:19:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 21144 backedges. 4917 proven. 354 refuted. 0 times theorem prover too weak. 15873 trivial. 0 not checked. [2020-12-22 19:19:25,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842326527] [2020-12-22 19:19:25,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768093495] [2020-12-22 19:19:25,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:19:25,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:19:25,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:19:25,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 19:19:25,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:19:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 21144 backedges. 4917 proven. 354 refuted. 0 times theorem prover too weak. 15873 trivial. 0 not checked. [2020-12-22 19:19:26,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:19:26,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-12-22 19:19:26,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707311960] [2020-12-22 19:19:26,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 19:19:26,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:19:26,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 19:19:26,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:19:26,344 INFO L87 Difference]: Start difference. First operand 528 states and 583 transitions. Second operand 15 states. [2020-12-22 19:19:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:19:27,392 INFO L93 Difference]: Finished difference Result 542 states and 598 transitions. [2020-12-22 19:19:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:19:27,393 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 527 [2020-12-22 19:19:27,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:19:27,396 INFO L225 Difference]: With dead ends: 542 [2020-12-22 19:19:27,397 INFO L226 Difference]: Without dead ends: 542 [2020-12-22 19:19:27,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 526 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:19:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-12-22 19:19:27,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 533. [2020-12-22 19:19:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-12-22 19:19:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 589 transitions. [2020-12-22 19:19:27,408 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 589 transitions. Word has length 527 [2020-12-22 19:19:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:19:27,409 INFO L481 AbstractCegarLoop]: Abstraction has 533 states and 589 transitions. [2020-12-22 19:19:27,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 19:19:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 589 transitions. [2020-12-22 19:19:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-12-22 19:19:27,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:19:27,414 INFO L422 BasicCegarLoop]: trace histogram [91, 90, 90, 90, 90, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1] [2020-12-22 19:19:27,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 19:19:27,615 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:19:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:19:27,616 INFO L82 PathProgramCache]: Analyzing trace with hash 2144250899, now seen corresponding path program 21 times [2020-12-22 19:19:27,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:19:27,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039071450] [2020-12-22 19:19:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:19:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:19:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 21602 backedges. 9018 proven. 1209 refuted. 0 times theorem prover too weak. 11375 trivial. 0 not checked. [2020-12-22 19:19:28,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039071450] [2020-12-22 19:19:28,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483243802] [2020-12-22 19:19:28,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:19:29,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-12-22 19:19:29,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:19:29,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 19:19:29,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:19:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 21602 backedges. 5313 proven. 416 refuted. 0 times theorem prover too weak. 15873 trivial. 0 not checked. [2020-12-22 19:19:30,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:19:30,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 16] total 46 [2020-12-22 19:19:30,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660780621] [2020-12-22 19:19:30,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-22 19:19:30,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:19:30,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-22 19:19:30,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=1639, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 19:19:30,230 INFO L87 Difference]: Start difference. First operand 533 states and 589 transitions. Second operand 46 states. [2020-12-22 19:19:35,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:19:35,157 INFO L93 Difference]: Finished difference Result 624 states and 691 transitions. [2020-12-22 19:19:35,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-12-22 19:19:35,158 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 532 [2020-12-22 19:19:35,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:19:35,163 INFO L225 Difference]: With dead ends: 624 [2020-12-22 19:19:35,164 INFO L226 Difference]: Without dead ends: 624 [2020-12-22 19:19:35,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2712 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2590, Invalid=8752, Unknown=0, NotChecked=0, Total=11342 [2020-12-22 19:19:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-12-22 19:19:35,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 610. [2020-12-22 19:19:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-12-22 19:19:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 677 transitions. [2020-12-22 19:19:35,181 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 677 transitions. Word has length 532 [2020-12-22 19:19:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:19:35,182 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 677 transitions. [2020-12-22 19:19:35,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-22 19:19:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 677 transitions. [2020-12-22 19:19:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2020-12-22 19:19:35,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:19:35,189 INFO L422 BasicCegarLoop]: trace histogram [105, 104, 104, 104, 104, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1] [2020-12-22 19:19:35,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 19:19:35,405 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:19:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:19:35,406 INFO L82 PathProgramCache]: Analyzing trace with hash -141341848, now seen corresponding path program 22 times [2020-12-22 19:19:35,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:19:35,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294811732] [2020-12-22 19:19:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:19:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:19:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 28722 backedges. 11442 proven. 1407 refuted. 0 times theorem prover too weak. 15873 trivial. 0 not checked. [2020-12-22 19:19:37,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294811732] [2020-12-22 19:19:37,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837901106] [2020-12-22 19:19:37,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:19:39,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:19:39,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:19:39,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 19:19:39,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:19:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 28722 backedges. 573 proven. 26239 refuted. 0 times theorem prover too weak. 1910 trivial. 0 not checked. [2020-12-22 19:19:42,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:19:42,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30] total 59 [2020-12-22 19:19:42,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851269366] [2020-12-22 19:19:42,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-12-22 19:19:42,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:19:42,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-12-22 19:19:42,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=2836, Unknown=0, NotChecked=0, Total=3422 [2020-12-22 19:19:42,217 INFO L87 Difference]: Start difference. First operand 610 states and 677 transitions. Second operand 59 states. [2020-12-22 19:19:54,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:19:54,869 INFO L93 Difference]: Finished difference Result 762 states and 840 transitions. [2020-12-22 19:19:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2020-12-22 19:19:54,870 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 609 [2020-12-22 19:19:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:19:54,876 INFO L225 Difference]: With dead ends: 762 [2020-12-22 19:19:54,876 INFO L226 Difference]: Without dead ends: 762 [2020-12-22 19:19:54,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14602 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=6209, Invalid=37681, Unknown=0, NotChecked=0, Total=43890 [2020-12-22 19:19:54,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-12-22 19:19:54,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 687. [2020-12-22 19:19:54,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-12-22 19:19:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 765 transitions. [2020-12-22 19:19:54,898 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 765 transitions. Word has length 609 [2020-12-22 19:19:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:19:54,899 INFO L481 AbstractCegarLoop]: Abstraction has 687 states and 765 transitions. [2020-12-22 19:19:54,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-12-22 19:19:54,899 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 765 transitions. [2020-12-22 19:19:54,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2020-12-22 19:19:54,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:19:54,907 INFO L422 BasicCegarLoop]: trace histogram [119, 118, 118, 118, 118, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1] [2020-12-22 19:19:55,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:19:55,122 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:19:55,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:19:55,123 INFO L82 PathProgramCache]: Analyzing trace with hash 2104567347, now seen corresponding path program 23 times [2020-12-22 19:19:55,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:19:55,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671989148] [2020-12-22 19:19:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:19:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:19:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 36857 backedges. 7683 proven. 483 refuted. 0 times theorem prover too weak. 28691 trivial. 0 not checked. [2020-12-22 19:19:56,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671989148] [2020-12-22 19:19:56,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205089046] [2020-12-22 19:19:56,334 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:19:59,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2020-12-22 19:19:59,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:19:59,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 19:19:59,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 36857 backedges. 7683 proven. 483 refuted. 0 times theorem prover too weak. 28691 trivial. 0 not checked. [2020-12-22 19:20:00,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:00,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 17 [2020-12-22 19:20:00,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704942722] [2020-12-22 19:20:00,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 19:20:00,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:00,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 19:20:00,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:20:00,367 INFO L87 Difference]: Start difference. First operand 687 states and 765 transitions. Second operand 18 states. [2020-12-22 19:20:01,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:01,936 INFO L93 Difference]: Finished difference Result 701 states and 780 transitions. [2020-12-22 19:20:01,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:20:01,937 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 686 [2020-12-22 19:20:01,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:01,941 INFO L225 Difference]: With dead ends: 701 [2020-12-22 19:20:01,942 INFO L226 Difference]: Without dead ends: 701 [2020-12-22 19:20:01,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 683 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:20:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-12-22 19:20:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 692. [2020-12-22 19:20:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-12-22 19:20:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 771 transitions. [2020-12-22 19:20:01,958 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 771 transitions. Word has length 686 [2020-12-22 19:20:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:01,959 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 771 transitions. [2020-12-22 19:20:01,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 19:20:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 771 transitions. [2020-12-22 19:20:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2020-12-22 19:20:01,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:01,966 INFO L422 BasicCegarLoop]: trace histogram [120, 119, 119, 119, 119, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1] [2020-12-22 19:20:02,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-22 19:20:02,181 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:20:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:02,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1933956260, now seen corresponding path program 24 times [2020-12-22 19:20:02,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:02,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431802517] [2020-12-22 19:20:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 37462 backedges. 14263 proven. 1620 refuted. 0 times theorem prover too weak. 21579 trivial. 0 not checked. [2020-12-22 19:20:03,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431802517] [2020-12-22 19:20:03,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220401739] [2020-12-22 19:20:03,761 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:04,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2020-12-22 19:20:04,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:20:04,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 19:20:04,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 37462 backedges. 8216 proven. 555 refuted. 0 times theorem prover too weak. 28691 trivial. 0 not checked. [2020-12-22 19:20:07,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:07,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 18] total 52 [2020-12-22 19:20:07,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059270085] [2020-12-22 19:20:07,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-12-22 19:20:07,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:07,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-12-22 19:20:07,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=2097, Unknown=0, NotChecked=0, Total=2652 [2020-12-22 19:20:07,017 INFO L87 Difference]: Start difference. First operand 692 states and 771 transitions. Second operand 52 states. [2020-12-22 19:20:13,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:13,496 INFO L93 Difference]: Finished difference Result 793 states and 885 transitions. [2020-12-22 19:20:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-12-22 19:20:13,497 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 691 [2020-12-22 19:20:13,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:13,502 INFO L225 Difference]: With dead ends: 793 [2020-12-22 19:20:13,503 INFO L226 Difference]: Without dead ends: 793 [2020-12-22 19:20:13,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3653 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3410, Invalid=11596, Unknown=0, NotChecked=0, Total=15006 [2020-12-22 19:20:13,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-12-22 19:20:13,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 779. [2020-12-22 19:20:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2020-12-22 19:20:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 871 transitions. [2020-12-22 19:20:13,519 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 871 transitions. Word has length 691 [2020-12-22 19:20:13,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:13,520 INFO L481 AbstractCegarLoop]: Abstraction has 779 states and 871 transitions. [2020-12-22 19:20:13,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-12-22 19:20:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 871 transitions. [2020-12-22 19:20:13,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2020-12-22 19:20:13,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:13,529 INFO L422 BasicCegarLoop]: trace histogram [136, 135, 135, 135, 135, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1] [2020-12-22 19:20:13,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-22 19:20:13,744 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:20:13,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:13,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2035927017, now seen corresponding path program 25 times [2020-12-22 19:20:13,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:13,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197662919] [2020-12-22 19:20:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 48050 backedges. 17511 proven. 1848 refuted. 0 times theorem prover too weak. 28691 trivial. 0 not checked. [2020-12-22 19:20:15,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197662919] [2020-12-22 19:20:15,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776140624] [2020-12-22 19:20:15,632 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:16,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 19:20:16,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 48050 backedges. 751 proven. 44380 refuted. 0 times theorem prover too weak. 2919 trivial. 0 not checked. [2020-12-22 19:20:19,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:19,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 34] total 67 [2020-12-22 19:20:19,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168814491] [2020-12-22 19:20:19,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-12-22 19:20:19,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:19,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-12-22 19:20:19,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=3673, Unknown=0, NotChecked=0, Total=4422 [2020-12-22 19:20:19,085 INFO L87 Difference]: Start difference. First operand 779 states and 871 transitions. Second operand 67 states. [2020-12-22 19:20:33,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:33,682 INFO L93 Difference]: Finished difference Result 953 states and 1058 transitions. [2020-12-22 19:20:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2020-12-22 19:20:33,683 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 778 [2020-12-22 19:20:33,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:33,688 INFO L225 Difference]: With dead ends: 953 [2020-12-22 19:20:33,688 INFO L226 Difference]: Without dead ends: 953 [2020-12-22 19:20:33,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22548 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=8745, Invalid=57047, Unknown=0, NotChecked=0, Total=65792 [2020-12-22 19:20:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-12-22 19:20:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 866. [2020-12-22 19:20:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2020-12-22 19:20:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 971 transitions. [2020-12-22 19:20:33,706 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 971 transitions. Word has length 778 [2020-12-22 19:20:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:33,706 INFO L481 AbstractCegarLoop]: Abstraction has 866 states and 971 transitions. [2020-12-22 19:20:33,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-12-22 19:20:33,707 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 971 transitions. [2020-12-22 19:20:33,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-12-22 19:20:33,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:33,746 INFO L422 BasicCegarLoop]: trace histogram [152, 151, 151, 151, 151, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1] [2020-12-22 19:20:33,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:33,947 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:20:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:33,948 INFO L82 PathProgramCache]: Analyzing trace with hash 269073220, now seen corresponding path program 26 times [2020-12-22 19:20:33,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:33,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764107683] [2020-12-22 19:20:33,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 59957 backedges. 11325 proven. 632 refuted. 0 times theorem prover too weak. 48000 trivial. 0 not checked. [2020-12-22 19:20:35,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764107683] [2020-12-22 19:20:35,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904834826] [2020-12-22 19:20:35,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:35,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:20:35,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:20:35,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 2304 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 19:20:35,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 59957 backedges. 11325 proven. 632 refuted. 0 times theorem prover too weak. 48000 trivial. 0 not checked. [2020-12-22 19:20:36,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:36,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-12-22 19:20:36,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166481812] [2020-12-22 19:20:37,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:20:37,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:37,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:20:37,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:20:37,001 INFO L87 Difference]: Start difference. First operand 866 states and 971 transitions. Second operand 19 states. [2020-12-22 19:20:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:38,863 INFO L93 Difference]: Finished difference Result 880 states and 986 transitions. [2020-12-22 19:20:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:20:38,863 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 865 [2020-12-22 19:20:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:38,868 INFO L225 Difference]: With dead ends: 880 [2020-12-22 19:20:38,868 INFO L226 Difference]: Without dead ends: 880 [2020-12-22 19:20:38,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 864 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:20:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-12-22 19:20:38,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 871. [2020-12-22 19:20:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 871 states. [2020-12-22 19:20:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 977 transitions. [2020-12-22 19:20:38,881 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 977 transitions. Word has length 865 [2020-12-22 19:20:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:38,882 INFO L481 AbstractCegarLoop]: Abstraction has 871 states and 977 transitions. [2020-12-22 19:20:38,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:20:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 977 transitions. [2020-12-22 19:20:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2020-12-22 19:20:38,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:38,890 INFO L422 BasicCegarLoop]: trace histogram [153, 152, 152, 152, 152, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1] [2020-12-22 19:20:39,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-22 19:20:39,104 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:20:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:39,105 INFO L82 PathProgramCache]: Analyzing trace with hash 516211251, now seen corresponding path program 27 times [2020-12-22 19:20:39,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:39,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300788107] [2020-12-22 19:20:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 60729 backedges. 21216 proven. 2091 refuted. 0 times theorem prover too weak. 37422 trivial. 0 not checked. [2020-12-22 19:20:41,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300788107] [2020-12-22 19:20:41,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099824768] [2020-12-22 19:20:41,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:41,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2020-12-22 19:20:41,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:20:41,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 19:20:41,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 60729 backedges. 12015 proven. 714 refuted. 0 times theorem prover too weak. 48000 trivial. 0 not checked. [2020-12-22 19:20:43,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:43,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 20] total 58 [2020-12-22 19:20:43,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622455220] [2020-12-22 19:20:43,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-12-22 19:20:43,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:43,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-12-22 19:20:43,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=695, Invalid=2611, Unknown=0, NotChecked=0, Total=3306 [2020-12-22 19:20:43,826 INFO L87 Difference]: Start difference. First operand 871 states and 977 transitions. Second operand 58 states. [2020-12-22 19:20:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:20:50,839 INFO L93 Difference]: Finished difference Result 982 states and 1103 transitions. [2020-12-22 19:20:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-12-22 19:20:50,840 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 870 [2020-12-22 19:20:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:20:50,844 INFO L225 Difference]: With dead ends: 982 [2020-12-22 19:20:50,845 INFO L226 Difference]: Without dead ends: 982 [2020-12-22 19:20:50,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4734 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=4342, Invalid=14840, Unknown=0, NotChecked=0, Total=19182 [2020-12-22 19:20:50,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-12-22 19:20:50,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 968. [2020-12-22 19:20:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-12-22 19:20:50,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1089 transitions. [2020-12-22 19:20:50,859 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1089 transitions. Word has length 870 [2020-12-22 19:20:50,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:20:50,860 INFO L481 AbstractCegarLoop]: Abstraction has 968 states and 1089 transitions. [2020-12-22 19:20:50,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-12-22 19:20:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1089 transitions. [2020-12-22 19:20:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-12-22 19:20:50,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:20:50,870 INFO L422 BasicCegarLoop]: trace histogram [171, 170, 170, 170, 170, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1] [2020-12-22 19:20:51,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:51,084 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:20:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:20:51,085 INFO L82 PathProgramCache]: Analyzing trace with hash 2108342792, now seen corresponding path program 28 times [2020-12-22 19:20:51,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:20:51,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964996489] [2020-12-22 19:20:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:20:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:20:53,386 INFO L134 CoverageAnalysis]: Checked inductivity of 75757 backedges. 25408 proven. 2349 refuted. 0 times theorem prover too weak. 48000 trivial. 0 not checked. [2020-12-22 19:20:53,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964996489] [2020-12-22 19:20:53,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996620132] [2020-12-22 19:20:53,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:20:55,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:20:55,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:20:56,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 19:20:56,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:20:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 75757 backedges. 953 proven. 70572 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-12-22 19:20:59,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:20:59,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38] total 75 [2020-12-22 19:20:59,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066392591] [2020-12-22 19:20:59,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-12-22 19:20:59,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:20:59,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-12-22 19:20:59,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=932, Invalid=4618, Unknown=0, NotChecked=0, Total=5550 [2020-12-22 19:20:59,812 INFO L87 Difference]: Start difference. First operand 968 states and 1089 transitions. Second operand 75 states. [2020-12-22 19:21:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:18,705 INFO L93 Difference]: Finished difference Result 1164 states and 1300 transitions. [2020-12-22 19:21:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2020-12-22 19:21:18,707 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 967 [2020-12-22 19:21:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:18,712 INFO L225 Difference]: With dead ends: 1164 [2020-12-22 19:21:18,712 INFO L226 Difference]: Without dead ends: 1164 [2020-12-22 19:21:18,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1240 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33221 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=11861, Invalid=82695, Unknown=0, NotChecked=0, Total=94556 [2020-12-22 19:21:18,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2020-12-22 19:21:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1065. [2020-12-22 19:21:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-12-22 19:21:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1201 transitions. [2020-12-22 19:21:18,733 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1201 transitions. Word has length 967 [2020-12-22 19:21:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:18,735 INFO L481 AbstractCegarLoop]: Abstraction has 1065 states and 1201 transitions. [2020-12-22 19:21:18,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-12-22 19:21:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1201 transitions. [2020-12-22 19:21:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2020-12-22 19:21:18,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:18,746 INFO L422 BasicCegarLoop]: trace histogram [189, 188, 188, 188, 188, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1] [2020-12-22 19:21:18,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-12-22 19:21:18,959 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:21:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:18,960 INFO L82 PathProgramCache]: Analyzing trace with hash -829228845, now seen corresponding path program 29 times [2020-12-22 19:21:18,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:18,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750273163] [2020-12-22 19:21:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 92448 backedges. 15963 proven. 801 refuted. 0 times theorem prover too weak. 75684 trivial. 0 not checked. [2020-12-22 19:21:20,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750273163] [2020-12-22 19:21:20,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139292850] [2020-12-22 19:21:20,542 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:29,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2020-12-22 19:21:29,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:21:29,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 2808 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 19:21:29,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:21:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 92448 backedges. 15963 proven. 801 refuted. 0 times theorem prover too weak. 75684 trivial. 0 not checked. [2020-12-22 19:21:31,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:21:31,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 21 [2020-12-22 19:21:31,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365909384] [2020-12-22 19:21:31,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 19:21:31,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:21:31,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 19:21:31,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:21:31,331 INFO L87 Difference]: Start difference. First operand 1065 states and 1201 transitions. Second operand 22 states. [2020-12-22 19:21:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:33,944 INFO L93 Difference]: Finished difference Result 1079 states and 1216 transitions. [2020-12-22 19:21:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 19:21:33,945 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1064 [2020-12-22 19:21:33,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:33,950 INFO L225 Difference]: With dead ends: 1079 [2020-12-22 19:21:33,950 INFO L226 Difference]: Without dead ends: 1079 [2020-12-22 19:21:33,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 1061 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:21:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-12-22 19:21:33,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1070. [2020-12-22 19:21:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-12-22 19:21:33,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1207 transitions. [2020-12-22 19:21:33,966 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1207 transitions. Word has length 1064 [2020-12-22 19:21:33,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:33,967 INFO L481 AbstractCegarLoop]: Abstraction has 1070 states and 1207 transitions. [2020-12-22 19:21:33,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 19:21:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1207 transitions. [2020-12-22 19:21:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2020-12-22 19:21:33,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:33,979 INFO L422 BasicCegarLoop]: trace histogram [190, 189, 189, 189, 189, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1] [2020-12-22 19:21:34,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-12-22 19:21:34,194 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:21:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:34,195 INFO L82 PathProgramCache]: Analyzing trace with hash 427730436, now seen corresponding path program 30 times [2020-12-22 19:21:34,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:34,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312785130] [2020-12-22 19:21:34,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 93407 backedges. 30117 proven. 2622 refuted. 0 times theorem prover too weak. 60668 trivial. 0 not checked. [2020-12-22 19:21:36,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312785130] [2020-12-22 19:21:36,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121329213] [2020-12-22 19:21:36,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:39,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2020-12-22 19:21:39,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:21:39,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 19:21:39,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:21:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 93407 backedges. 16830 proven. 893 refuted. 0 times theorem prover too weak. 75684 trivial. 0 not checked. [2020-12-22 19:21:42,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:21:42,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 22] total 64 [2020-12-22 19:21:42,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361985188] [2020-12-22 19:21:42,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-12-22 19:21:42,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:21:42,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-12-22 19:21:42,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=851, Invalid=3181, Unknown=0, NotChecked=0, Total=4032 [2020-12-22 19:21:42,304 INFO L87 Difference]: Start difference. First operand 1070 states and 1207 transitions. Second operand 64 states. [2020-12-22 19:21:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:21:51,138 INFO L93 Difference]: Finished difference Result 1191 states and 1345 transitions. [2020-12-22 19:21:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-12-22 19:21:51,139 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 1069 [2020-12-22 19:21:51,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:21:51,144 INFO L225 Difference]: With dead ends: 1191 [2020-12-22 19:21:51,144 INFO L226 Difference]: Without dead ends: 1191 [2020-12-22 19:21:51,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5955 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=5386, Invalid=18484, Unknown=0, NotChecked=0, Total=23870 [2020-12-22 19:21:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2020-12-22 19:21:51,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1177. [2020-12-22 19:21:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-12-22 19:21:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1331 transitions. [2020-12-22 19:21:51,160 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1331 transitions. Word has length 1069 [2020-12-22 19:21:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:21:51,161 INFO L481 AbstractCegarLoop]: Abstraction has 1177 states and 1331 transitions. [2020-12-22 19:21:51,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-12-22 19:21:51,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1331 transitions. [2020-12-22 19:21:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1177 [2020-12-22 19:21:51,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:21:51,174 INFO L422 BasicCegarLoop]: trace histogram [210, 209, 209, 209, 209, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1] [2020-12-22 19:21:51,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-12-22 19:21:51,389 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:21:51,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:21:51,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1341285879, now seen corresponding path program 31 times [2020-12-22 19:21:51,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:21:51,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467029729] [2020-12-22 19:21:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:21:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 113967 backedges. 35373 proven. 2910 refuted. 0 times theorem prover too weak. 75684 trivial. 0 not checked. [2020-12-22 19:21:54,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467029729] [2020-12-22 19:21:54,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890718126] [2020-12-22 19:21:54,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:21:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:21:55,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 3090 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-22 19:21:55,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:22:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 113967 backedges. 1179 proven. 106899 refuted. 0 times theorem prover too weak. 5889 trivial. 0 not checked. [2020-12-22 19:22:00,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:22:00,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 42] total 83 [2020-12-22 19:22:00,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983835693] [2020-12-22 19:22:00,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-12-22 19:22:00,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:22:00,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-12-22 19:22:00,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1135, Invalid=5671, Unknown=0, NotChecked=0, Total=6806 [2020-12-22 19:22:00,555 INFO L87 Difference]: Start difference. First operand 1177 states and 1331 transitions. Second operand 83 states.