/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/array-memsafety/openbsd_cstrncat-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:00:27,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:00:27,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:00:27,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:00:27,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:00:27,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:00:27,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:00:27,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:00:27,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:00:27,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:00:27,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:00:27,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:00:27,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:00:27,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:00:27,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:00:27,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:00:27,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:00:27,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:00:27,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:00:27,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:00:27,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:00:27,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:00:27,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:00:27,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:00:27,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:00:27,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:00:27,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:00:27,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:00:27,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:00:27,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:00:27,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:00:27,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:00:27,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:00:27,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:00:27,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:00:27,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:00:27,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:00:27,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:00:27,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:00:27,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:00:27,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:00:27,865 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:00:27,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:00:27,866 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:00:27,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:00:27,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:00:27,867 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:00:27,869 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:00:27,869 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:00:27,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:00:27,870 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:00:27,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:00:27,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:00:27,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:00:27,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:00:27,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:00:27,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:00:27,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:00:27,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:00:27,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:00:27,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:00:27,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:00:28,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:00:28,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:00:28,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:00:28,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:00:28,525 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:00:28,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i [2020-12-22 19:00:28,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd91b677f/1d6ab9fe488b43418a6c32b4cc1de3ec/FLAG5bbc97571 [2020-12-22 19:00:29,581 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:00:29,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i [2020-12-22 19:00:29,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd91b677f/1d6ab9fe488b43418a6c32b4cc1de3ec/FLAG5bbc97571 [2020-12-22 19:00:29,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd91b677f/1d6ab9fe488b43418a6c32b4cc1de3ec [2020-12-22 19:00:29,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:00:29,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:00:29,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:00:29,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:00:29,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:00:29,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:00:29" (1/1) ... [2020-12-22 19:00:29,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48682e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:29, skipping insertion in model container [2020-12-22 19:00:29,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:00:29" (1/1) ... [2020-12-22 19:00:29,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:00:29,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:00:30,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:00:30,379 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:00:30,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:00:30,510 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:00:30,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30 WrapperNode [2020-12-22 19:00:30,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:00:30,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:00:30,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:00:30,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:00:30,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (1/1) ... [2020-12-22 19:00:30,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (1/1) ... [2020-12-22 19:00:30,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:00:30,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:00:30,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:00:30,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:00:30,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (1/1) ... [2020-12-22 19:00:30,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (1/1) ... [2020-12-22 19:00:30,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (1/1) ... [2020-12-22 19:00:30,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (1/1) ... [2020-12-22 19:00:30,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (1/1) ... [2020-12-22 19:00:30,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (1/1) ... [2020-12-22 19:00:30,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (1/1) ... [2020-12-22 19:00:30,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:00:30,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:00:30,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:00:30,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:00:30,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (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 19:00:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:00:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:00:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:00:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:00:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:00:30,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:00:31,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:00:31,662 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-22 19:00:31,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:00:31 BoogieIcfgContainer [2020-12-22 19:00:31,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:00:31,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:00:31,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:00:31,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:00:31,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:00:29" (1/3) ... [2020-12-22 19:00:31,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aeb9124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:00:31, skipping insertion in model container [2020-12-22 19:00:31,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:30" (2/3) ... [2020-12-22 19:00:31,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aeb9124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:00:31, skipping insertion in model container [2020-12-22 19:00:31,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:00:31" (3/3) ... [2020-12-22 19:00:31,679 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncat-alloca-2.i [2020-12-22 19:00:31,688 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:00:31,695 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-12-22 19:00:31,722 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-12-22 19:00:31,766 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:00:31,767 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:00:31,767 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:00:31,767 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:00:31,767 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:00:31,767 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:00:31,768 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:00:31,768 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:00:31,791 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-22 19:00:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:00:31,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:31,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:31,808 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:31,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:31,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1805031113, now seen corresponding path program 1 times [2020-12-22 19:00:31,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:31,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371974803] [2020-12-22 19:00:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:32,094 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 19:00:32,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371974803] [2020-12-22 19:00:32,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:32,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:00:32,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577665090] [2020-12-22 19:00:32,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:00:32,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:32,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:00:32,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:00:32,135 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-12-22 19:00:32,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:32,271 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-12-22 19:00:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:00:32,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 19:00:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:32,285 INFO L225 Difference]: With dead ends: 51 [2020-12-22 19:00:32,285 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 19:00:32,287 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 19:00:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 19:00:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-22 19:00:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 19:00:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-22 19:00:32,333 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 7 [2020-12-22 19:00:32,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:32,334 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-22 19:00:32,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:00:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-22 19:00:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:00:32,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:32,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:32,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:00:32,337 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:32,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:32,339 INFO L82 PathProgramCache]: Analyzing trace with hash 121388915, now seen corresponding path program 1 times [2020-12-22 19:00:32,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:32,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843714713] [2020-12-22 19:00:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:32,417 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 19:00:32,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843714713] [2020-12-22 19:00:32,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:32,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:32,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757535250] [2020-12-22 19:00:32,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:32,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:32,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:32,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:32,422 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-12-22 19:00:32,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:32,549 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-12-22 19:00:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:32,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-22 19:00:32,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:32,551 INFO L225 Difference]: With dead ends: 51 [2020-12-22 19:00:32,552 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 19:00:32,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:32,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 19:00:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-22 19:00:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 19:00:32,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-12-22 19:00:32,562 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 8 [2020-12-22 19:00:32,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:32,562 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-12-22 19:00:32,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-12-22 19:00:32,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:00:32,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:32,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:32,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:00:32,565 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:32,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:32,567 INFO L82 PathProgramCache]: Analyzing trace with hash 178647217, now seen corresponding path program 1 times [2020-12-22 19:00:32,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:32,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103490057] [2020-12-22 19:00:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:32,661 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 19:00:32,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103490057] [2020-12-22 19:00:32,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:32,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:00:32,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907669345] [2020-12-22 19:00:32,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:00:32,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:32,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:00:32,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:00:32,668 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 3 states. [2020-12-22 19:00:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:32,739 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-12-22 19:00:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:00:32,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-22 19:00:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:32,742 INFO L225 Difference]: With dead ends: 46 [2020-12-22 19:00:32,743 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 19:00:32,744 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 19:00:32,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 19:00:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-22 19:00:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:00:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-12-22 19:00:32,754 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 8 [2020-12-22 19:00:32,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:32,757 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-12-22 19:00:32,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:00:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-12-22 19:00:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:00:32,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:32,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:32,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:00:32,766 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:32,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:32,769 INFO L82 PathProgramCache]: Analyzing trace with hash 178647218, now seen corresponding path program 1 times [2020-12-22 19:00:32,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:32,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137654374] [2020-12-22 19:00:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:32,978 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 19:00:32,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137654374] [2020-12-22 19:00:32,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:32,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:32,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620565807] [2020-12-22 19:00:32,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:00:32,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:32,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:00:32,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:32,987 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 6 states. [2020-12-22 19:00:33,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:33,223 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-12-22 19:00:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:33,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-22 19:00:33,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:33,226 INFO L225 Difference]: With dead ends: 50 [2020-12-22 19:00:33,226 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 19:00:33,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:00:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 19:00:33,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-12-22 19:00:33,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 19:00:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-12-22 19:00:33,235 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 8 [2020-12-22 19:00:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:33,235 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-12-22 19:00:33,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:00:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-12-22 19:00:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:00:33,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:33,237 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:33,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:00:33,237 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:33,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1877967093, now seen corresponding path program 1 times [2020-12-22 19:00:33,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:33,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949686639] [2020-12-22 19:00:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:33,403 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 19:00:33,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949686639] [2020-12-22 19:00:33,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753671581] [2020-12-22 19:00:33,404 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 19:00:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:33,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 19:00:33,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:33,617 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_20|], 1=[|v_#valid_28|]} [2020-12-22 19:00:33,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:33,650 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 19:00:33,655 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:33,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:33,688 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 10 treesize of output 8 [2020-12-22 19:00:33,701 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:33,713 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:33,720 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:33,721 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-22 19:00:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:33,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:33,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 19:00:33,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607221837] [2020-12-22 19:00:33,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:00:33,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:33,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:00:33,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:33,785 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2020-12-22 19:00:33,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:33,938 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-12-22 19:00:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:33,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 19:00:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:33,940 INFO L225 Difference]: With dead ends: 49 [2020-12-22 19:00:33,940 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 19:00:33,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:33,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 19:00:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-12-22 19:00:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:00:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-12-22 19:00:33,949 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 12 [2020-12-22 19:00:33,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:33,950 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-12-22 19:00:33,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:00:33,950 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-12-22 19:00:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:00:33,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:33,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:34,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:34,168 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:34,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:34,170 INFO L82 PathProgramCache]: Analyzing trace with hash 840060780, now seen corresponding path program 1 times [2020-12-22 19:00:34,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:34,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920047608] [2020-12-22 19:00:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:34,343 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 19:00:34,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920047608] [2020-12-22 19:00:34,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752368028] [2020-12-22 19:00:34,345 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 19:00:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:34,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:00:34,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:34,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:34,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:00:34,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2020-12-22 19:00:34,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732125920] [2020-12-22 19:00:34,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:00:34,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:34,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:00:34,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:00:34,645 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 8 states. [2020-12-22 19:00:34,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:34,832 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-12-22 19:00:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:00:34,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-22 19:00:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:34,835 INFO L225 Difference]: With dead ends: 45 [2020-12-22 19:00:34,835 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 19:00:34,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:00:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 19:00:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-22 19:00:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:00:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-12-22 19:00:34,841 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 14 [2020-12-22 19:00:34,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:34,842 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-12-22 19:00:34,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:00:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-12-22 19:00:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:00:34,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:34,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:35,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:35,061 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:35,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:35,063 INFO L82 PathProgramCache]: Analyzing trace with hash 840060832, now seen corresponding path program 1 times [2020-12-22 19:00:35,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:35,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160798638] [2020-12-22 19:00:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:35,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160798638] [2020-12-22 19:00:35,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:35,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:35,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079562952] [2020-12-22 19:00:35,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:35,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:35,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:35,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:35,129 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 4 states. [2020-12-22 19:00:35,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:35,160 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-22 19:00:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:35,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 19:00:35,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:35,162 INFO L225 Difference]: With dead ends: 81 [2020-12-22 19:00:35,163 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 19:00:35,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 19:00:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 19:00:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 54. [2020-12-22 19:00:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 19:00:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-12-22 19:00:35,170 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 14 [2020-12-22 19:00:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:35,170 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-12-22 19:00:35,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-12-22 19:00:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:00:35,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:35,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:35,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:00:35,172 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:35,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:35,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1541125410, now seen corresponding path program 1 times [2020-12-22 19:00:35,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:35,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459333872] [2020-12-22 19:00:35,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:35,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459333872] [2020-12-22 19:00:35,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:35,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:00:35,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563885251] [2020-12-22 19:00:35,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:00:35,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:35,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:00:35,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:00:35,269 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 3 states. [2020-12-22 19:00:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:35,318 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2020-12-22 19:00:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:00:35,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-22 19:00:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:35,320 INFO L225 Difference]: With dead ends: 52 [2020-12-22 19:00:35,320 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 19:00:35,320 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 19:00:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 19:00:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-22 19:00:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 19:00:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-12-22 19:00:35,331 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 14 [2020-12-22 19:00:35,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:35,331 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-12-22 19:00:35,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:00:35,332 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-12-22 19:00:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:00:35,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:35,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:35,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:00:35,337 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:35,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:35,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1541125411, now seen corresponding path program 1 times [2020-12-22 19:00:35,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:35,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331093565] [2020-12-22 19:00:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:35,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331093565] [2020-12-22 19:00:35,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:35,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:35,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847696207] [2020-12-22 19:00:35,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:00:35,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:35,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:00:35,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:35,463 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 6 states. [2020-12-22 19:00:35,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:35,590 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2020-12-22 19:00:35,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:35,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-22 19:00:35,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:35,592 INFO L225 Difference]: With dead ends: 80 [2020-12-22 19:00:35,593 INFO L226 Difference]: Without dead ends: 80 [2020-12-22 19:00:35,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-22 19:00:35,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 53. [2020-12-22 19:00:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 19:00:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-12-22 19:00:35,601 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 14 [2020-12-22 19:00:35,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:35,601 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-12-22 19:00:35,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:00:35,602 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-12-22 19:00:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:00:35,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:35,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:35,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:00:35,603 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:35,604 INFO L82 PathProgramCache]: Analyzing trace with hash 944154227, now seen corresponding path program 1 times [2020-12-22 19:00:35,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:35,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345704711] [2020-12-22 19:00:35,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:35,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345704711] [2020-12-22 19:00:35,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:35,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:35,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087767860] [2020-12-22 19:00:35,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:35,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:35,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:35,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:35,691 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 5 states. [2020-12-22 19:00:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:35,793 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-12-22 19:00:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:35,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 19:00:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:35,795 INFO L225 Difference]: With dead ends: 52 [2020-12-22 19:00:35,795 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 19:00:35,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:35,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 19:00:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-12-22 19:00:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:00:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-12-22 19:00:35,801 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 18 [2020-12-22 19:00:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:35,802 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-12-22 19:00:35,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-12-22 19:00:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:00:35,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:35,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:35,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:00:35,804 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:35,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:35,805 INFO L82 PathProgramCache]: Analyzing trace with hash 944154228, now seen corresponding path program 1 times [2020-12-22 19:00:35,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:35,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614517911] [2020-12-22 19:00:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:35,924 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 19:00:35,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614517911] [2020-12-22 19:00:35,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349300055] [2020-12-22 19:00:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:00:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:36,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 19:00:36,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:36,135 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_21|], 1=[|v_#valid_29|]} [2020-12-22 19:00:36,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:36,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:36,148 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 19:00:36,150 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:36,168 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:36,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:36,177 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 19:00:36,183 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:36,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:36,200 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:36,201 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:29, output treesize:18 [2020-12-22 19:00:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:36,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:00:36,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2020-12-22 19:00:36,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857703287] [2020-12-22 19:00:36,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:00:36,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:36,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:00:36,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:00:36,415 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-12-22 19:00:36,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:36,655 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-12-22 19:00:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:00:36,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 19:00:36,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:36,657 INFO L225 Difference]: With dead ends: 63 [2020-12-22 19:00:36,657 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 19:00:36,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:00:36,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 19:00:36,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-12-22 19:00:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-22 19:00:36,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-12-22 19:00:36,671 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 18 [2020-12-22 19:00:36,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:36,672 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-12-22 19:00:36,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:00:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-12-22 19:00:36,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:00:36,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:36,673 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:36,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 19:00:36,878 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:36,879 INFO L82 PathProgramCache]: Analyzing trace with hash -287041178, now seen corresponding path program 1 times [2020-12-22 19:00:36,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:36,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884447838] [2020-12-22 19:00:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:36,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884447838] [2020-12-22 19:00:36,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655494029] [2020-12-22 19:00:36,980 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 19:00:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:37,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:00:37,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:37,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:37,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-22 19:00:37,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692753145] [2020-12-22 19:00:37,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:00:37,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:37,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:00:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:00:37,164 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 10 states. [2020-12-22 19:00:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:37,427 INFO L93 Difference]: Finished difference Result 133 states and 163 transitions. [2020-12-22 19:00:37,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:00:37,428 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-12-22 19:00:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:37,429 INFO L225 Difference]: With dead ends: 133 [2020-12-22 19:00:37,429 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 19:00:37,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:00:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 19:00:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 61. [2020-12-22 19:00:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 19:00:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-12-22 19:00:37,435 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 18 [2020-12-22 19:00:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:37,435 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-12-22 19:00:37,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:00:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-12-22 19:00:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:00:37,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:37,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:37,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:37,652 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:37,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1095465713, now seen corresponding path program 1 times [2020-12-22 19:00:37,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:37,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974506405] [2020-12-22 19:00:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:37,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974506405] [2020-12-22 19:00:37,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:37,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:37,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541457050] [2020-12-22 19:00:37,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:37,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:37,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:37,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:37,762 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 4 states. [2020-12-22 19:00:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:37,803 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2020-12-22 19:00:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:37,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-22 19:00:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:37,806 INFO L225 Difference]: With dead ends: 130 [2020-12-22 19:00:37,806 INFO L226 Difference]: Without dead ends: 130 [2020-12-22 19:00:37,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:00:37,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-22 19:00:37,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 90. [2020-12-22 19:00:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 19:00:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2020-12-22 19:00:37,811 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 20 [2020-12-22 19:00:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:37,812 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2020-12-22 19:00:37,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:37,812 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2020-12-22 19:00:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:00:37,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:37,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:37,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:00:37,813 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:37,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:37,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1094114349, now seen corresponding path program 1 times [2020-12-22 19:00:37,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:37,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014086528] [2020-12-22 19:00:37,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:37,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014086528] [2020-12-22 19:00:37,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998464380] [2020-12-22 19:00:37,945 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 19:00:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:38,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 19:00:38,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:38,097 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_30|]} [2020-12-22 19:00:38,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:38,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:38,107 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 19:00:38,108 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:38,123 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:38,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:38,130 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 19:00:38,131 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:38,142 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:38,146 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:38,147 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:29, output treesize:18 [2020-12-22 19:00:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:38,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:38,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-12-22 19:00:38,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418737011] [2020-12-22 19:00:38,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 19:00:38,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:38,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 19:00:38,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:00:38,386 INFO L87 Difference]: Start difference. First operand 90 states and 111 transitions. Second operand 15 states. [2020-12-22 19:00:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:38,997 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2020-12-22 19:00:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:00:38,998 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 20 [2020-12-22 19:00:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:38,999 INFO L225 Difference]: With dead ends: 111 [2020-12-22 19:00:38,999 INFO L226 Difference]: Without dead ends: 111 [2020-12-22 19:00:39,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:00:39,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-22 19:00:39,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2020-12-22 19:00:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-22 19:00:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2020-12-22 19:00:39,006 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 20 [2020-12-22 19:00:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:39,007 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2020-12-22 19:00:39,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 19:00:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2020-12-22 19:00:39,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:00:39,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:39,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:39,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 19:00:39,223 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:39,224 INFO L82 PathProgramCache]: Analyzing trace with hash 74397359, now seen corresponding path program 1 times [2020-12-22 19:00:39,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:39,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514369225] [2020-12-22 19:00:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:39,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514369225] [2020-12-22 19:00:39,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:39,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:39,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453378780] [2020-12-22 19:00:39,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:39,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:39,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:39,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:39,316 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand 5 states. [2020-12-22 19:00:39,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:39,351 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2020-12-22 19:00:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:39,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-22 19:00:39,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:39,354 INFO L225 Difference]: With dead ends: 117 [2020-12-22 19:00:39,354 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 19:00:39,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 19:00:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 69. [2020-12-22 19:00:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-22 19:00:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2020-12-22 19:00:39,360 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 20 [2020-12-22 19:00:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:39,360 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2020-12-22 19:00:39,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2020-12-22 19:00:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:00:39,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:39,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:39,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:00:39,362 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:39,362 INFO L82 PathProgramCache]: Analyzing trace with hash -442195040, now seen corresponding path program 1 times [2020-12-22 19:00:39,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:39,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435368757] [2020-12-22 19:00:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:39,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435368757] [2020-12-22 19:00:39,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:39,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:39,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844523224] [2020-12-22 19:00:39,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:00:39,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:39,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:00:39,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:39,420 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand 6 states. [2020-12-22 19:00:39,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:39,520 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-12-22 19:00:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:00:39,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-22 19:00:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:39,521 INFO L225 Difference]: With dead ends: 68 [2020-12-22 19:00:39,521 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 19:00:39,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:00:39,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 19:00:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-22 19:00:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 19:00:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2020-12-22 19:00:39,525 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 21 [2020-12-22 19:00:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:39,526 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2020-12-22 19:00:39,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:00:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2020-12-22 19:00:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:00:39,527 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:39,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:39,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:00:39,527 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:39,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:39,528 INFO L82 PathProgramCache]: Analyzing trace with hash -442195039, now seen corresponding path program 1 times [2020-12-22 19:00:39,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:39,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246028124] [2020-12-22 19:00:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:39,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246028124] [2020-12-22 19:00:39,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:39,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:00:39,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056333180] [2020-12-22 19:00:39,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:00:39,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:39,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:00:39,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:00:39,638 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand 8 states. [2020-12-22 19:00:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:39,785 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2020-12-22 19:00:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:00:39,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-22 19:00:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:39,790 INFO L225 Difference]: With dead ends: 77 [2020-12-22 19:00:39,790 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 19:00:39,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:00:39,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 19:00:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2020-12-22 19:00:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 19:00:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2020-12-22 19:00:39,798 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 21 [2020-12-22 19:00:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:39,799 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2020-12-22 19:00:39,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:00:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2020-12-22 19:00:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:00:39,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:39,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:39,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:00:39,801 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:39,802 INFO L82 PathProgramCache]: Analyzing trace with hash -823097434, now seen corresponding path program 2 times [2020-12-22 19:00:39,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:39,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514086663] [2020-12-22 19:00:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:40,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514086663] [2020-12-22 19:00:40,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762791595] [2020-12-22 19:00:40,227 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 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 19:00:40,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:00:40,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:40,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 19:00:40,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:40,416 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 10 treesize of output 8 [2020-12-22 19:00:40,420 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:40,434 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:40,435 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:40,435 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-12-22 19:00:40,627 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-12-22 19:00:40,629 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:40,650 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:40,659 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:40,660 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:35 [2020-12-22 19:00:40,772 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2020-12-22 19:00:40,775 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:40,801 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:40,818 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:40,819 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:49, output treesize:45 [2020-12-22 19:00:41,303 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:00:41,305 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2020-12-22 19:00:41,308 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:41,330 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:41,339 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:41,340 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:58, output treesize:3 [2020-12-22 19:00:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:41,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:41,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 19 [2020-12-22 19:00:41,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455561050] [2020-12-22 19:00:41,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:00:41,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:41,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:00:41,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:00:41,351 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 19 states. [2020-12-22 19:00:42,033 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-12-22 19:00:44,282 WARN L197 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-12-22 19:00:46,509 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-12-22 19:00:48,755 WARN L197 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-12-22 19:00:49,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:49,564 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2020-12-22 19:00:49,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 19:00:49,564 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-12-22 19:00:49,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:49,565 INFO L225 Difference]: With dead ends: 115 [2020-12-22 19:00:49,565 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 19:00:49,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2020-12-22 19:00:49,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 19:00:49,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 84. [2020-12-22 19:00:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:00:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2020-12-22 19:00:49,570 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 22 [2020-12-22 19:00:49,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:49,570 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2020-12-22 19:00:49,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:00:49,570 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2020-12-22 19:00:49,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:00:49,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:49,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:49,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 19:00:49,786 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1863163671, now seen corresponding path program 2 times [2020-12-22 19:00:49,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:49,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777927892] [2020-12-22 19:00:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:49,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777927892] [2020-12-22 19:00:49,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690003473] [2020-12-22 19:00:49,890 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 19:00:49,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:00:49,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:49,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:00:49,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:49,975 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:49,976 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:00:49,978 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:49,998 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:00:50,000 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:50,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-22 19:00:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:50,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:50,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2020-12-22 19:00:50,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614718862] [2020-12-22 19:00:50,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:00:50,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:50,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:00:50,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:00:50,099 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand 13 states. [2020-12-22 19:00:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:50,876 INFO L93 Difference]: Finished difference Result 243 states and 291 transitions. [2020-12-22 19:00:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:00:50,877 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-12-22 19:00:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:50,879 INFO L225 Difference]: With dead ends: 243 [2020-12-22 19:00:50,879 INFO L226 Difference]: Without dead ends: 243 [2020-12-22 19:00:50,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2020-12-22 19:00:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-22 19:00:50,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 90. [2020-12-22 19:00:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 19:00:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2020-12-22 19:00:50,884 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 22 [2020-12-22 19:00:50,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:50,884 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2020-12-22 19:00:50,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:00:50,885 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2020-12-22 19:00:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:00:50,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:50,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:51,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:51,094 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:51,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:51,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1330977111, now seen corresponding path program 3 times [2020-12-22 19:00:51,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:51,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409735542] [2020-12-22 19:00:51,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:51,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409735542] [2020-12-22 19:00:51,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001751284] [2020-12-22 19:00:51,250 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 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 19:00:51,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 19:00:51,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:51,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 19:00:51,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:51,352 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_32|]} [2020-12-22 19:00:51,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:51,361 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 19:00:51,362 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:51,373 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:51,379 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 10 treesize of output 8 [2020-12-22 19:00:51,380 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:51,390 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:51,392 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:51,392 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-22 19:00:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:51,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:51,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2020-12-22 19:00:51,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197505269] [2020-12-22 19:00:51,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:00:51,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:51,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:00:51,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:00:51,483 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand 13 states. [2020-12-22 19:00:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:51,981 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2020-12-22 19:00:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:00:51,982 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-12-22 19:00:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:51,986 INFO L225 Difference]: With dead ends: 141 [2020-12-22 19:00:51,986 INFO L226 Difference]: Without dead ends: 141 [2020-12-22 19:00:51,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:00:51,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-22 19:00:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 100. [2020-12-22 19:00:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:00:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2020-12-22 19:00:51,993 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 26 [2020-12-22 19:00:51,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:51,993 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2020-12-22 19:00:51,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:00:51,994 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2020-12-22 19:00:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:00:51,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:51,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:52,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:52,213 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:52,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:52,214 INFO L82 PathProgramCache]: Analyzing trace with hash 803583084, now seen corresponding path program 1 times [2020-12-22 19:00:52,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:52,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057989787] [2020-12-22 19:00:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:52,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057989787] [2020-12-22 19:00:52,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:52,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:00:52,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259768430] [2020-12-22 19:00:52,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:52,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:52,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:52,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:52,281 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand 4 states. [2020-12-22 19:00:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:52,311 INFO L93 Difference]: Finished difference Result 99 states and 121 transitions. [2020-12-22 19:00:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:52,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-12-22 19:00:52,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:52,312 INFO L225 Difference]: With dead ends: 99 [2020-12-22 19:00:52,312 INFO L226 Difference]: Without dead ends: 95 [2020-12-22 19:00:52,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 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 19:00:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-22 19:00:52,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-12-22 19:00:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 19:00:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2020-12-22 19:00:52,316 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 27 [2020-12-22 19:00:52,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:52,316 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2020-12-22 19:00:52,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2020-12-22 19:00:52,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:00:52,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:52,317 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:52,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 19:00:52,317 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:52,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:52,318 INFO L82 PathProgramCache]: Analyzing trace with hash 805151438, now seen corresponding path program 1 times [2020-12-22 19:00:52,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:52,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872630716] [2020-12-22 19:00:52,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:52,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872630716] [2020-12-22 19:00:52,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:52,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:52,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508723097] [2020-12-22 19:00:52,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:52,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:52,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:52,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:52,407 INFO L87 Difference]: Start difference. First operand 95 states and 112 transitions. Second operand 5 states. [2020-12-22 19:00:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:52,461 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions. [2020-12-22 19:00:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:52,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 19:00:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:52,464 INFO L225 Difference]: With dead ends: 179 [2020-12-22 19:00:52,464 INFO L226 Difference]: Without dead ends: 159 [2020-12-22 19:00:52,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-22 19:00:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2020-12-22 19:00:52,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-22 19:00:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2020-12-22 19:00:52,469 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 27 [2020-12-22 19:00:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:52,469 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2020-12-22 19:00:52,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2020-12-22 19:00:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:00:52,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:52,470 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:52,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 19:00:52,470 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:52,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1000286896, now seen corresponding path program 1 times [2020-12-22 19:00:52,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:52,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123424983] [2020-12-22 19:00:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:52,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123424983] [2020-12-22 19:00:52,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148702906] [2020-12-22 19:00:52,586 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 19:00:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:52,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 19:00:52,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:52,709 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:00:52,710 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:52,715 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:52,715 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:52,716 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-22 19:00:52,881 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:00:52,884 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:52,884 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2020-12-22 19:00:52,885 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:52,894 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:52,896 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:52,896 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:3 [2020-12-22 19:00:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:52,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:00:52,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2020-12-22 19:00:52,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118473263] [2020-12-22 19:00:52,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:00:52,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:52,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:00:52,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:00:52,945 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 9 states. [2020-12-22 19:00:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:53,219 INFO L93 Difference]: Finished difference Result 215 states and 245 transitions. [2020-12-22 19:00:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:00:53,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-22 19:00:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:53,221 INFO L225 Difference]: With dead ends: 215 [2020-12-22 19:00:53,221 INFO L226 Difference]: Without dead ends: 191 [2020-12-22 19:00:53,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:00:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-22 19:00:53,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 159. [2020-12-22 19:00:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-12-22 19:00:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 187 transitions. [2020-12-22 19:00:53,226 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 187 transitions. Word has length 27 [2020-12-22 19:00:53,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:53,226 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 187 transitions. [2020-12-22 19:00:53,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:00:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 187 transitions. [2020-12-22 19:00:53,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:00:53,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:53,227 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:53,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:53,429 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:53,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:53,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1134300402, now seen corresponding path program 1 times [2020-12-22 19:00:53,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:53,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204929332] [2020-12-22 19:00:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:53,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204929332] [2020-12-22 19:00:53,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499408348] [2020-12-22 19:00:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:00:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:53,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 19:00:53,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:53,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:53,706 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:53,706 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:00:53,708 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:53,743 INFO L625 ElimStorePlain]: treesize reduction 10, result has 72.2 percent of original size [2020-12-22 19:00:53,744 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:53,744 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-12-22 19:00:53,850 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-22 19:00:53,851 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:53,856 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:53,857 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:53,857 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-12-22 19:00:53,980 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 24 treesize of output 18 [2020-12-22 19:00:53,984 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:53,995 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:54,000 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:00:54,002 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:54,002 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-12-22 19:00:54,003 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:54,011 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:54,014 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:54,014 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2020-12-22 19:00:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:54,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:54,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2020-12-22 19:00:54,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245106300] [2020-12-22 19:00:54,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 19:00:54,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:54,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 19:00:54,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:00:54,043 INFO L87 Difference]: Start difference. First operand 159 states and 187 transitions. Second operand 18 states. [2020-12-22 19:00:55,023 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 19:00:55,180 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-12-22 19:00:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:55,356 INFO L93 Difference]: Finished difference Result 203 states and 230 transitions. [2020-12-22 19:00:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 19:00:55,357 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 27 [2020-12-22 19:00:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:55,359 INFO L225 Difference]: With dead ends: 203 [2020-12-22 19:00:55,359 INFO L226 Difference]: Without dead ends: 191 [2020-12-22 19:00:55,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=229, Invalid=763, Unknown=0, NotChecked=0, Total=992 [2020-12-22 19:00:55,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-22 19:00:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 151. [2020-12-22 19:00:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-22 19:00:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2020-12-22 19:00:55,367 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 27 [2020-12-22 19:00:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:55,367 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2020-12-22 19:00:55,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 19:00:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2020-12-22 19:00:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:00:55,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:55,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:55,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:55,582 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:55,584 INFO L82 PathProgramCache]: Analyzing trace with hash 831251234, now seen corresponding path program 4 times [2020-12-22 19:00:55,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:55,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823019443] [2020-12-22 19:00:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:56,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823019443] [2020-12-22 19:00:56,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796272213] [2020-12-22 19:00:56,061 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 19:00:56,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:00:56,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:56,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 19:00:56,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:56,211 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:56,212 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:00:56,213 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:56,246 INFO L625 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2020-12-22 19:00:56,247 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:56,247 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:24 [2020-12-22 19:00:56,527 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:00:56,541 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-12-22 19:00:56,541 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:56,548 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-22 19:00:56,553 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:56,591 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:56,593 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-22 19:00:56,594 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:68, output treesize:60 [2020-12-22 19:00:56,687 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-12-22 19:00:56,687 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:00:56,733 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:56,733 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 61 [2020-12-22 19:00:56,735 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:56,804 INFO L625 ElimStorePlain]: treesize reduction 33, result has 70.5 percent of original size [2020-12-22 19:00:56,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:56,831 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2020-12-22 19:00:56,832 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:56,860 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:56,863 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2020-12-22 19:00:56,863 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:83, output treesize:75 [2020-12-22 19:01:00,949 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 19:01:03,043 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 19:01:05,141 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 19:01:05,797 WARN L197 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-12-22 19:01:07,910 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 45 [2020-12-22 19:01:07,917 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:07,932 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:01:07,933 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:01:07,941 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:07,941 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 26 [2020-12-22 19:01:07,943 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:07,947 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:01:07,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:01:07,949 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 10 [2020-12-22 19:01:07,951 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:07,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:07,975 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-22 19:01:07,975 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:95, output treesize:35 [2020-12-22 19:01:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:01:08,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:08,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2020-12-22 19:01:08,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070247210] [2020-12-22 19:01:08,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-22 19:01:08,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:08,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-22 19:01:08,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=624, Unknown=1, NotChecked=0, Total=702 [2020-12-22 19:01:08,059 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand 27 states. [2020-12-22 19:01:09,338 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-12-22 19:01:14,250 WARN L197 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2020-12-22 19:01:23,595 WARN L197 SmtUtils]: Spent 8.52 s on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2020-12-22 19:01:29,298 WARN L197 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2020-12-22 19:01:34,418 WARN L197 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2020-12-22 19:01:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:34,744 INFO L93 Difference]: Finished difference Result 219 states and 240 transitions. [2020-12-22 19:01:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 19:01:34,744 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 28 [2020-12-22 19:01:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:34,746 INFO L225 Difference]: With dead ends: 219 [2020-12-22 19:01:34,746 INFO L226 Difference]: Without dead ends: 195 [2020-12-22 19:01:34,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=398, Invalid=1857, Unknown=1, NotChecked=0, Total=2256 [2020-12-22 19:01:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-12-22 19:01:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 150. [2020-12-22 19:01:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-22 19:01:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2020-12-22 19:01:34,752 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 28 [2020-12-22 19:01:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:34,752 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2020-12-22 19:01:34,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-22 19:01:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2020-12-22 19:01:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:01:34,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:34,753 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:34,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:01:34,964 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:34,965 INFO L82 PathProgramCache]: Analyzing trace with hash 697237728, now seen corresponding path program 1 times [2020-12-22 19:01:34,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:34,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53039536] [2020-12-22 19:01:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:01:35,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53039536] [2020-12-22 19:01:35,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264987836] [2020-12-22 19:01:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:01:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:35,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 19:01:35,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:35,486 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 10 treesize of output 8 [2020-12-22 19:01:35,488 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:35,497 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:35,498 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:35,498 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-22 19:01:35,679 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-12-22 19:01:35,680 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:35,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:35,697 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:35,698 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:32 [2020-12-22 19:01:35,759 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2020-12-22 19:01:35,761 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:35,775 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:35,781 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:35,782 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:46, output treesize:42 [2020-12-22 19:01:36,745 INFO L348 Elim1Store]: treesize reduction 10, result has 75.6 percent of original size [2020-12-22 19:01:36,745 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 44 [2020-12-22 19:01:36,747 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:36,749 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:36,777 INFO L625 ElimStorePlain]: treesize reduction 7, result has 80.0 percent of original size [2020-12-22 19:01:36,780 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:36,781 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:59, output treesize:3 [2020-12-22 19:01:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:01:36,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:36,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2020-12-22 19:01:36,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118946346] [2020-12-22 19:01:36,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 19:01:36,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:36,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 19:01:36,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2020-12-22 19:01:36,820 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand 26 states. [2020-12-22 19:01:37,683 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 19:01:40,267 WARN L197 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-12-22 19:01:44,350 WARN L197 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-12-22 19:01:44,876 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-12-22 19:01:48,697 WARN L197 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2020-12-22 19:01:51,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:51,067 INFO L93 Difference]: Finished difference Result 215 states and 244 transitions. [2020-12-22 19:01:51,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:01:51,068 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 28 [2020-12-22 19:01:51,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:51,069 INFO L225 Difference]: With dead ends: 215 [2020-12-22 19:01:51,069 INFO L226 Difference]: Without dead ends: 205 [2020-12-22 19:01:51,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=262, Invalid=1070, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 19:01:51,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-22 19:01:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 157. [2020-12-22 19:01:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-22 19:01:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 183 transitions. [2020-12-22 19:01:51,075 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 183 transitions. Word has length 28 [2020-12-22 19:01:51,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:51,075 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 183 transitions. [2020-12-22 19:01:51,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 19:01:51,075 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 183 transitions. [2020-12-22 19:01:51,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:01:51,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:51,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:51,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 19:01:51,277 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:51,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:51,278 INFO L82 PathProgramCache]: Analyzing trace with hash -934715925, now seen corresponding path program 2 times [2020-12-22 19:01:51,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:51,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713043808] [2020-12-22 19:01:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:01:51,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713043808] [2020-12-22 19:01:51,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:01:51,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 19:01:51,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886374849] [2020-12-22 19:01:51,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:01:51,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:51,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:01:51,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:01:51,457 INFO L87 Difference]: Start difference. First operand 157 states and 183 transitions. Second operand 11 states. [2020-12-22 19:01:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:51,767 INFO L93 Difference]: Finished difference Result 225 states and 257 transitions. [2020-12-22 19:01:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:01:51,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-12-22 19:01:51,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:51,769 INFO L225 Difference]: With dead ends: 225 [2020-12-22 19:01:51,769 INFO L226 Difference]: Without dead ends: 201 [2020-12-22 19:01:51,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:01:51,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-12-22 19:01:51,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 159. [2020-12-22 19:01:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-12-22 19:01:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2020-12-22 19:01:51,775 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 31 [2020-12-22 19:01:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:51,775 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2020-12-22 19:01:51,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:01:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2020-12-22 19:01:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:01:51,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:51,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:51,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 19:01:51,776 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:51,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:51,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1853207525, now seen corresponding path program 5 times [2020-12-22 19:01:51,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:51,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267454588] [2020-12-22 19:01:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:51,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267454588] [2020-12-22 19:01:51,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339741718] [2020-12-22 19:01:51,987 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 19:01:52,065 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-22 19:01:52,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:52,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 19:01:52,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:52,108 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:52,108 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:01:52,110 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:52,145 INFO L625 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2020-12-22 19:01:52,146 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:52,147 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:52,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:21 [2020-12-22 19:01:52,149 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:52,188 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:52,222 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:52,257 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:52,295 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:52,368 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:52,430 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:52,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:52,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2020-12-22 19:01:52,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324869255] [2020-12-22 19:01:52,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 19:01:52,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:52,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 19:01:52,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:01:52,900 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 23 states. [2020-12-22 19:01:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:54,861 INFO L93 Difference]: Finished difference Result 242 states and 275 transitions. [2020-12-22 19:01:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 19:01:54,862 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 32 [2020-12-22 19:01:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:54,864 INFO L225 Difference]: With dead ends: 242 [2020-12-22 19:01:54,864 INFO L226 Difference]: Without dead ends: 226 [2020-12-22 19:01:54,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 19:01:54,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-22 19:01:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 173. [2020-12-22 19:01:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-22 19:01:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 202 transitions. [2020-12-22 19:01:54,871 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 202 transitions. Word has length 32 [2020-12-22 19:01:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:54,871 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 202 transitions. [2020-12-22 19:01:54,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 19:01:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 202 transitions. [2020-12-22 19:01:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:01:54,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:54,872 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:55,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 19:01:55,086 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:55,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1478995618, now seen corresponding path program 6 times [2020-12-22 19:01:55,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:55,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565177121] [2020-12-22 19:01:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:01:55,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565177121] [2020-12-22 19:01:55,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555367574] [2020-12-22 19:01:55,475 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 19:01:55,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-22 19:01:55,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:55,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-22 19:01:55,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:55,937 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-22 19:01:55,938 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:55,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:55,953 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:55,953 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2020-12-22 19:01:56,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:01:56,022 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-12-22 19:01:56,023 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:56,035 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:56,036 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:56,037 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2020-12-22 19:01:56,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:01:56,431 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:01:56,439 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:56,439 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 25 [2020-12-22 19:01:56,441 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:01:56,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:56,452 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:56,455 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:56,455 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:3 [2020-12-22 19:01:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:01:56,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:56,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 30 [2020-12-22 19:01:56,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303896910] [2020-12-22 19:01:56,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 19:01:56,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:56,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 19:01:56,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:01:56,469 INFO L87 Difference]: Start difference. First operand 173 states and 202 transitions. Second operand 30 states. [2020-12-22 19:01:58,346 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-12-22 19:01:58,648 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-12-22 19:01:58,867 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-12-22 19:01:59,213 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-12-22 19:01:59,520 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-12-22 19:01:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:59,713 INFO L93 Difference]: Finished difference Result 307 states and 338 transitions. [2020-12-22 19:01:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 19:01:59,714 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 34 [2020-12-22 19:01:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:59,716 INFO L225 Difference]: With dead ends: 307 [2020-12-22 19:01:59,717 INFO L226 Difference]: Without dead ends: 269 [2020-12-22 19:01:59,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=488, Invalid=2704, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 19:01:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-12-22 19:01:59,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 182. [2020-12-22 19:01:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-12-22 19:01:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2020-12-22 19:01:59,723 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 34 [2020-12-22 19:01:59,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:59,723 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2020-12-22 19:01:59,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 19:01:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2020-12-22 19:01:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:01:59,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:59,724 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:59,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:59,935 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:59,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1456363364, now seen corresponding path program 2 times [2020-12-22 19:01:59,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:59,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882058416] [2020-12-22 19:01:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:02:00,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882058416] [2020-12-22 19:02:00,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298171524] [2020-12-22 19:02:00,622 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 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 19:02:00,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:02:00,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:00,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-22 19:02:00,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:00,729 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 10 treesize of output 8 [2020-12-22 19:02:00,731 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:00,744 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:00,745 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:00,745 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-12-22 19:02:01,034 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-12-22 19:02:01,038 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:01,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:01,055 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:01,056 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:35 [2020-12-22 19:02:01,134 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2020-12-22 19:02:01,136 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:01,153 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:01,159 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:01,159 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:49, output treesize:45 [2020-12-22 19:02:01,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:02:01,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:02:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:02:01,954 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:01,954 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 64 [2020-12-22 19:02:01,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:02:01,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:02:01,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:02,015 INFO L625 ElimStorePlain]: treesize reduction 10, result has 83.3 percent of original size [2020-12-22 19:02:02,021 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:02,021 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:80, output treesize:3 [2020-12-22 19:02:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:02:02,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:02,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 30 [2020-12-22 19:02:02,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408596174] [2020-12-22 19:02:02,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 19:02:02,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:02,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 19:02:02,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:02:02,036 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand 30 states. [2020-12-22 19:02:04,538 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2020-12-22 19:02:04,808 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-12-22 19:02:09,944 WARN L197 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2020-12-22 19:02:16,245 WARN L197 SmtUtils]: Spent 6.20 s on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2020-12-22 19:02:23,883 WARN L197 SmtUtils]: Spent 7.52 s on a formula simplification. DAG size of input: 107 DAG size of output: 68 [2020-12-22 19:02:28,191 WARN L197 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2020-12-22 19:02:32,557 WARN L197 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2020-12-22 19:02:39,977 WARN L197 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-12-22 19:02:45,673 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-12-22 19:02:54,835 WARN L197 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2020-12-22 19:02:58,065 WARN L197 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2020-12-22 19:03:10,415 WARN L197 SmtUtils]: Spent 10.24 s on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2020-12-22 19:03:11,702 WARN L197 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2020-12-22 19:03:16,508 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2020-12-22 19:03:23,543 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2020-12-22 19:03:24,003 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-12-22 19:03:31,289 WARN L197 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-12-22 19:03:43,218 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-12-22 19:03:44,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:44,764 INFO L93 Difference]: Finished difference Result 303 states and 344 transitions. [2020-12-22 19:03:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 19:03:44,764 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 34 [2020-12-22 19:03:44,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:44,766 INFO L225 Difference]: With dead ends: 303 [2020-12-22 19:03:44,766 INFO L226 Difference]: Without dead ends: 291 [2020-12-22 19:03:44,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 74.7s TimeCoverageRelationStatistics Valid=616, Invalid=2574, Unknown=2, NotChecked=0, Total=3192 [2020-12-22 19:03:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-12-22 19:03:44,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 197. [2020-12-22 19:03:44,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-12-22 19:03:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 229 transitions. [2020-12-22 19:03:44,774 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 229 transitions. Word has length 34 [2020-12-22 19:03:44,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:44,775 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 229 transitions. [2020-12-22 19:03:44,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 19:03:44,775 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 229 transitions. [2020-12-22 19:03:44,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:03:44,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:44,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:44,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:44,990 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:44,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:44,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1739814664, now seen corresponding path program 1 times [2020-12-22 19:03:44,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:44,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926101626] [2020-12-22 19:03:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:03:45,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926101626] [2020-12-22 19:03:45,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423169700] [2020-12-22 19:03:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:03:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:45,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 19:03:45,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:45,304 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:45,305 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:03:45,307 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:45,334 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:03:45,336 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:45,337 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-22 19:03:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:03:45,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:45,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2020-12-22 19:03:45,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450373766] [2020-12-22 19:03:45,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 19:03:45,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:45,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 19:03:45,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:03:45,630 INFO L87 Difference]: Start difference. First operand 197 states and 229 transitions. Second operand 20 states. [2020-12-22 19:03:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:46,414 INFO L93 Difference]: Finished difference Result 240 states and 270 transitions. [2020-12-22 19:03:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:03:46,415 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 35 [2020-12-22 19:03:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:46,416 INFO L225 Difference]: With dead ends: 240 [2020-12-22 19:03:46,417 INFO L226 Difference]: Without dead ends: 240 [2020-12-22 19:03:46,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-12-22 19:03:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-12-22 19:03:46,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 217. [2020-12-22 19:03:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-22 19:03:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 251 transitions. [2020-12-22 19:03:46,423 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 251 transitions. Word has length 35 [2020-12-22 19:03:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:46,423 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 251 transitions. [2020-12-22 19:03:46,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 19:03:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 251 transitions. [2020-12-22 19:03:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 19:03:46,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:46,424 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:46,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:46,639 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:46,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:46,640 INFO L82 PathProgramCache]: Analyzing trace with hash 763708385, now seen corresponding path program 7 times [2020-12-22 19:03:46,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:46,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145686201] [2020-12-22 19:03:46,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:46,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145686201] [2020-12-22 19:03:46,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636059306] [2020-12-22 19:03:46,938 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 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 19:03:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:47,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 19:03:47,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:47,067 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:47,068 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:03:47,072 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:47,110 INFO L625 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2020-12-22 19:03:47,114 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:47,115 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:47,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:21 [2020-12-22 19:03:47,118 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:47,169 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:47,211 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:47,264 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:47,323 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:47,422 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:47,519 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:47,604 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:47,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:47,785 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:03:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:48,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:48,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2020-12-22 19:03:48,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773341939] [2020-12-22 19:03:48,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-22 19:03:48,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:48,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-22 19:03:48,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2020-12-22 19:03:48,397 INFO L87 Difference]: Start difference. First operand 217 states and 251 transitions. Second operand 28 states. [2020-12-22 19:03:49,896 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2020-12-22 19:03:50,204 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-12-22 19:03:51,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:51,762 INFO L93 Difference]: Finished difference Result 366 states and 411 transitions. [2020-12-22 19:03:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:03:51,763 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 38 [2020-12-22 19:03:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:51,765 INFO L225 Difference]: With dead ends: 366 [2020-12-22 19:03:51,765 INFO L226 Difference]: Without dead ends: 350 [2020-12-22 19:03:51,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=336, Invalid=1734, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 19:03:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-12-22 19:03:51,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 237. [2020-12-22 19:03:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-22 19:03:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 273 transitions. [2020-12-22 19:03:51,773 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 273 transitions. Word has length 38 [2020-12-22 19:03:51,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:51,773 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 273 transitions. [2020-12-22 19:03:51,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-22 19:03:51,773 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 273 transitions. [2020-12-22 19:03:51,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:03:51,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:51,774 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:51,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-12-22 19:03:51,988 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:51,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:51,989 INFO L82 PathProgramCache]: Analyzing trace with hash -515648934, now seen corresponding path program 8 times [2020-12-22 19:03:51,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:51,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281111156] [2020-12-22 19:03:51,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:52,517 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:52,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281111156] [2020-12-22 19:03:52,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540302922] [2020-12-22 19:03:52,518 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 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 19:03:52,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:03:52,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:52,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-22 19:03:52,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:52,630 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 10 treesize of output 8 [2020-12-22 19:03:52,632 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:52,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:52,645 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:52,645 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-12-22 19:03:53,038 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-12-22 19:03:53,039 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:53,058 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:53,062 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:53,062 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2020-12-22 19:03:53,149 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2020-12-22 19:03:53,150 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:53,172 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:53,175 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:53,176 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:47, output treesize:43 [2020-12-22 19:03:53,972 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:03:53,973 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2020-12-22 19:03:53,975 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:53,999 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:54,003 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:54,004 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:58, output treesize:3 [2020-12-22 19:03:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:54,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:54,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 32 [2020-12-22 19:03:54,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920357494] [2020-12-22 19:03:54,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-22 19:03:54,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:54,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-22 19:03:54,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2020-12-22 19:03:54,017 INFO L87 Difference]: Start difference. First operand 237 states and 273 transitions. Second operand 32 states. [2020-12-22 19:03:55,632 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-12-22 19:03:55,859 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2020-12-22 19:03:56,124 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-12-22 19:03:56,493 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2020-12-22 19:03:56,838 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2020-12-22 19:03:57,156 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-12-22 19:03:57,435 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2020-12-22 19:03:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:57,586 INFO L93 Difference]: Finished difference Result 327 states and 366 transitions. [2020-12-22 19:03:57,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 19:03:57,587 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 40 [2020-12-22 19:03:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:57,589 INFO L225 Difference]: With dead ends: 327 [2020-12-22 19:03:57,589 INFO L226 Difference]: Without dead ends: 295 [2020-12-22 19:03:57,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=279, Invalid=1883, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 19:03:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-22 19:03:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 246. [2020-12-22 19:03:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-12-22 19:03:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2020-12-22 19:03:57,596 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 40 [2020-12-22 19:03:57,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:57,596 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2020-12-22 19:03:57,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-22 19:03:57,596 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2020-12-22 19:03:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:03:57,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:57,597 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:57,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 19:03:57,813 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:57,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:57,814 INFO L82 PathProgramCache]: Analyzing trace with hash -910015720, now seen corresponding path program 3 times [2020-12-22 19:03:57,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:57,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356386991] [2020-12-22 19:03:57,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:58,236 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-12-22 19:03:58,470 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-12-22 19:03:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:59,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356386991] [2020-12-22 19:03:59,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746502293] [2020-12-22 19:03:59,248 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 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 19:03:59,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-22 19:03:59,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:59,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-22 19:03:59,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:59,976 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-12-22 19:03:59,977 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:59,997 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:59,999 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:04:00,000 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:34 [2020-12-22 19:04:00,134 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:00,134 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 66 [2020-12-22 19:04:00,136 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:00,185 INFO L625 ElimStorePlain]: treesize reduction 38, result has 47.9 percent of original size [2020-12-22 19:04:00,187 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:04:00,187 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:35 [2020-12-22 19:04:01,351 INFO L348 Elim1Store]: treesize reduction 17, result has 78.2 percent of original size [2020-12-22 19:04:01,352 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 82 [2020-12-22 19:04:01,356 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:04:01,359 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:04:01,361 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:04:01,362 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:04:01,364 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:01,412 INFO L625 ElimStorePlain]: treesize reduction 7, result has 84.1 percent of original size [2020-12-22 19:04:01,418 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:01,418 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:62, output treesize:3 [2020-12-22 19:04:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:04:01,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:01,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2020-12-22 19:04:01,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241161215] [2020-12-22 19:04:01,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-22 19:04:01,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:01,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-22 19:04:01,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1348, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 19:04:01,432 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand 39 states. [2020-12-22 19:04:02,081 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2020-12-22 19:04:02,599 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2020-12-22 19:04:02,795 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2020-12-22 19:04:03,292 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 19:04:03,655 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 19:04:04,228 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-22 19:04:04,582 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-22 19:04:05,227 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-12-22 19:04:05,669 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-12-22 19:04:06,084 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-12-22 19:04:06,574 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2020-12-22 19:04:07,103 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-12-22 19:04:07,575 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-12-22 19:04:07,752 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 19:04:08,171 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2020-12-22 19:04:08,691 WARN L197 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2020-12-22 19:04:08,903 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-12-22 19:04:09,400 WARN L197 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-12-22 19:04:10,041 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-12-22 19:04:10,223 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 19:04:10,708 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2020-12-22 19:04:11,289 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2020-12-22 19:04:11,484 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-12-22 19:04:11,951 WARN L197 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-12-22 19:04:12,507 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2020-12-22 19:04:13,258 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-12-22 19:04:13,882 WARN L197 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2020-12-22 19:04:14,083 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-12-22 19:04:14,646 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-12-22 19:04:15,290 WARN L197 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2020-12-22 19:04:16,221 WARN L197 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 100 [2020-12-22 19:04:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:16,916 INFO L93 Difference]: Finished difference Result 492 states and 543 transitions. [2020-12-22 19:04:16,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-22 19:04:16,917 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 40 [2020-12-22 19:04:16,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:16,922 INFO L225 Difference]: With dead ends: 492 [2020-12-22 19:04:16,922 INFO L226 Difference]: Without dead ends: 466 [2020-12-22 19:04:16,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=899, Invalid=5907, Unknown=0, NotChecked=0, Total=6806 [2020-12-22 19:04:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-12-22 19:04:16,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 261. [2020-12-22 19:04:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-22 19:04:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 300 transitions. [2020-12-22 19:04:16,933 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 300 transitions. Word has length 40 [2020-12-22 19:04:16,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:16,933 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 300 transitions. [2020-12-22 19:04:16,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-22 19:04:16,934 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 300 transitions. [2020-12-22 19:04:16,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 19:04:16,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:16,935 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:17,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-22 19:04:17,149 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:17,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:17,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2063863029, now seen corresponding path program 2 times [2020-12-22 19:04:17,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:17,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814652992] [2020-12-22 19:04:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:04:17,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814652992] [2020-12-22 19:04:17,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856272763] [2020-12-22 19:04:17,453 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 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 19:04:17,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:04:17,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:17,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 71 conjunts are in the unsatisfiable core [2020-12-22 19:04:17,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:17,574 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:17,575 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:04:17,577 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:17,618 INFO L625 ElimStorePlain]: treesize reduction 10, result has 72.2 percent of original size [2020-12-22 19:04:17,623 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 19:04:17,625 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:17,640 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:17,644 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:17,644 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:12 [2020-12-22 19:04:17,756 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-12-22 19:04:17,757 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:17,770 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:17,770 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:17,771 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2020-12-22 19:04:18,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:18,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:18,122 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:04:18,148 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:18,148 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 63 [2020-12-22 19:04:18,152 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:18,207 INFO L625 ElimStorePlain]: treesize reduction 18, result has 71.0 percent of original size [2020-12-22 19:04:18,208 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:18,209 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:44 [2020-12-22 19:04:18,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:18,467 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:18,467 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2020-12-22 19:04:18,469 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:04:18,487 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:18,489 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:18,490 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:19 [2020-12-22 19:04:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:04:18,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:18,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 28 [2020-12-22 19:04:18,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041624369] [2020-12-22 19:04:18,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-22 19:04:18,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:18,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-22 19:04:18,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2020-12-22 19:04:18,678 INFO L87 Difference]: Start difference. First operand 261 states and 300 transitions. Second operand 28 states. [2020-12-22 19:04:20,178 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 19:04:20,436 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-22 19:04:20,690 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-12-22 19:04:21,023 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-22 19:04:21,537 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-22 19:04:21,913 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-12-22 19:04:22,206 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-12-22 19:04:22,411 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-22 19:04:22,689 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-12-22 19:04:22,892 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-12-22 19:04:23,151 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-12-22 19:04:23,519 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 19:04:23,787 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-12-22 19:04:24,206 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-12-22 19:04:24,453 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-22 19:04:24,873 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-22 19:04:25,221 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-12-22 19:04:25,431 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 19:04:25,646 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-22 19:04:25,908 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-22 19:04:26,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:26,821 INFO L93 Difference]: Finished difference Result 359 states and 390 transitions. [2020-12-22 19:04:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-12-22 19:04:26,822 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 41 [2020-12-22 19:04:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:26,825 INFO L225 Difference]: With dead ends: 359 [2020-12-22 19:04:26,825 INFO L226 Difference]: Without dead ends: 333 [2020-12-22 19:04:26,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=921, Invalid=5241, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 19:04:26,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-12-22 19:04:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 251. [2020-12-22 19:04:26,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-12-22 19:04:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 289 transitions. [2020-12-22 19:04:26,832 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 289 transitions. Word has length 41 [2020-12-22 19:04:26,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:26,832 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 289 transitions. [2020-12-22 19:04:26,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-22 19:04:26,832 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 289 transitions. [2020-12-22 19:04:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 19:04:26,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:26,833 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:27,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 19:04:27,035 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:27,036 INFO L82 PathProgramCache]: Analyzing trace with hash 734238365, now seen corresponding path program 9 times [2020-12-22 19:04:27,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:27,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251250767] [2020-12-22 19:04:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 15 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:27,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251250767] [2020-12-22 19:04:27,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696806151] [2020-12-22 19:04:27,426 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 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 19:04:27,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-22 19:04:27,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:27,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-22 19:04:27,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:27,640 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:27,640 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:04:27,642 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:27,685 INFO L625 ElimStorePlain]: treesize reduction 10, result has 73.0 percent of original size [2020-12-22 19:04:27,686 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:27,687 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:27 [2020-12-22 19:04:28,028 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:04:28,120 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:04:28,130 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:04:28,131 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:28,137 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:04:28,138 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:28,174 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:28,175 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-22 19:04:28,176 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:44 [2020-12-22 19:04:28,515 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:04:28,524 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:04:28,526 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-22 19:04:28,527 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:28,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:28,538 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-22 19:04:28,541 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:28,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:28,568 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-22 19:04:28,568 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:27 [2020-12-22 19:04:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:29,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:29,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 32 [2020-12-22 19:04:29,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357196473] [2020-12-22 19:04:29,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-22 19:04:29,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:29,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-22 19:04:29,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 19:04:29,205 INFO L87 Difference]: Start difference. First operand 251 states and 289 transitions. Second operand 33 states. [2020-12-22 19:04:31,226 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-12-22 19:04:31,528 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 40 [2020-12-22 19:04:31,930 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-12-22 19:04:32,293 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-12-22 19:04:32,709 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-12-22 19:04:33,089 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-12-22 19:04:33,492 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2020-12-22 19:04:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:34,572 INFO L93 Difference]: Finished difference Result 408 states and 457 transitions. [2020-12-22 19:04:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 19:04:34,574 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 44 [2020-12-22 19:04:34,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:34,575 INFO L225 Difference]: With dead ends: 408 [2020-12-22 19:04:34,576 INFO L226 Difference]: Without dead ends: 392 [2020-12-22 19:04:34,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=528, Invalid=2552, Unknown=0, NotChecked=0, Total=3080 [2020-12-22 19:04:34,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-12-22 19:04:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 277. [2020-12-22 19:04:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-12-22 19:04:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 317 transitions. [2020-12-22 19:04:34,583 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 317 transitions. Word has length 44 [2020-12-22 19:04:34,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:34,583 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 317 transitions. [2020-12-22 19:04:34,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-22 19:04:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 317 transitions. [2020-12-22 19:04:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 19:04:34,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:34,585 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:34,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 19:04:34,799 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:34,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:34,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1228432918, now seen corresponding path program 10 times [2020-12-22 19:04:34,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:34,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983572972] [2020-12-22 19:04:34,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:04:35,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983572972] [2020-12-22 19:04:35,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751429678] [2020-12-22 19:04:35,508 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 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 19:04:35,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:04:35,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:35,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-22 19:04:35,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:36,298 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-22 19:04:36,299 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:36,318 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:36,320 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:04:36,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2020-12-22 19:04:36,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:36,415 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-12-22 19:04:36,416 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:36,430 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:36,432 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:04:36,432 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2020-12-22 19:04:37,262 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:04:37,275 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:37,275 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 25 [2020-12-22 19:04:37,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:04:37,278 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:37,290 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:37,293 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:37,293 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:3 [2020-12-22 19:04:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:04:37,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:37,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 38 [2020-12-22 19:04:37,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727832300] [2020-12-22 19:04:37,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-22 19:04:37,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:37,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-22 19:04:37,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 19:04:37,312 INFO L87 Difference]: Start difference. First operand 277 states and 317 transitions. Second operand 38 states. [2020-12-22 19:04:40,679 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-12-22 19:04:41,056 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-12-22 19:04:41,237 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-22 19:04:41,525 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-12-22 19:04:41,846 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-12-22 19:04:42,323 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-12-22 19:04:42,764 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-12-22 19:04:43,192 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-12-22 19:04:43,625 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2020-12-22 19:04:43,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:43,948 INFO L93 Difference]: Finished difference Result 443 states and 485 transitions. [2020-12-22 19:04:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-22 19:04:43,950 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 46 [2020-12-22 19:04:43,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:43,952 INFO L225 Difference]: With dead ends: 443 [2020-12-22 19:04:43,952 INFO L226 Difference]: Without dead ends: 393 [2020-12-22 19:04:43,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=646, Invalid=4904, Unknown=0, NotChecked=0, Total=5550 [2020-12-22 19:04:43,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-12-22 19:04:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 286. [2020-12-22 19:04:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-12-22 19:04:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 326 transitions. [2020-12-22 19:04:43,959 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 326 transitions. Word has length 46 [2020-12-22 19:04:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:43,959 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 326 transitions. [2020-12-22 19:04:43,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-22 19:04:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 326 transitions. [2020-12-22 19:04:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 19:04:43,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:43,961 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:44,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:44,175 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1476579412, now seen corresponding path program 4 times [2020-12-22 19:04:44,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:44,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935470436] [2020-12-22 19:04:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:44,548 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-12-22 19:04:45,010 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 19:04:45,147 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 19:04:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:04:46,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935470436] [2020-12-22 19:04:46,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23155807] [2020-12-22 19:04:46,110 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 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 19:04:46,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:04:46,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:46,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-22 19:04:46,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:46,363 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 10 treesize of output 8 [2020-12-22 19:04:46,366 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:46,382 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:46,383 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:46,384 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19