/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:43:43,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:43:43,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:43:43,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:43:43,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:43:43,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:43:43,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:43:43,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:43:43,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:43:43,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:43:43,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:43:43,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:43:43,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:43:43,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:43:43,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:43:43,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:43:43,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:43:43,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:43:43,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:43:43,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:43:43,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:43:43,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:43:43,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:43:43,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:43:43,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:43:43,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:43:43,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:43:43,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:43:43,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:43:43,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:43:43,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:43:43,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:43:43,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:43:43,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:43:43,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:43:43,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:43:43,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:43:43,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:43:43,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:43:43,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:43:43,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:43:43,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:43:43,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:43:43,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:43:43,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:43:43,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:43:43,788 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:43:43,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:43:43,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:43:43,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:43:43,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:43:43,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:43:43,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:43:43,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:43:43,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:43:43,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:43:43,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:43:43,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:43:43,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:43:43,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:43:43,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:43:43,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:43:43,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:43:43,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:43:43,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:43:43,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:43:43,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:43:43,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:43:43,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:43:43,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:43:43,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:43:43,795 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:43:44,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:43:44,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:43:44,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:43:44,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:43:44,200 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:43:44,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label51.c [2020-10-28 13:43:44,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c4072184/120b721f96f740d3997de8bf69bb7daa/FLAG66048f4d3 [2020-10-28 13:43:45,170 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:43:45,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label51.c [2020-10-28 13:43:45,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c4072184/120b721f96f740d3997de8bf69bb7daa/FLAG66048f4d3 [2020-10-28 13:43:45,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c4072184/120b721f96f740d3997de8bf69bb7daa [2020-10-28 13:43:45,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:43:45,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:43:45,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:43:45,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:43:45,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:43:45,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:43:45" (1/1) ... [2020-10-28 13:43:45,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de45a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:45, skipping insertion in model container [2020-10-28 13:43:45,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:43:45" (1/1) ... [2020-10-28 13:43:45,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:43:45,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:43:46,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:43:46,960 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:43:47,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:43:47,445 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:43:47,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:47 WrapperNode [2020-10-28 13:43:47,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:43:47,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:43:47,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:43:47,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:43:47,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:47" (1/1) ... [2020-10-28 13:43:47,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:47" (1/1) ... [2020-10-28 13:43:47,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:47" (1/1) ... [2020-10-28 13:43:47,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:47" (1/1) ... [2020-10-28 13:43:47,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:47" (1/1) ... [2020-10-28 13:43:47,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:47" (1/1) ... [2020-10-28 13:43:47,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:47" (1/1) ... [2020-10-28 13:43:47,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:43:47,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:43:47,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:43:47,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:43:47,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-28 13:43:47,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:43:47,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:43:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:43:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:43:47,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:43:47,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:43:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:43:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:43:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:43:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:43:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:43:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:43:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:43:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:43:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:43:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:43:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:43:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:43:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:43:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:43:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:43:57,478 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:43:57,479 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:43:57,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:43:57 BoogieIcfgContainer [2020-10-28 13:43:57,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:43:57,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:43:57,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:43:57,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:43:57,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:43:45" (1/3) ... [2020-10-28 13:43:57,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10847bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:43:57, skipping insertion in model container [2020-10-28 13:43:57,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:43:47" (2/3) ... [2020-10-28 13:43:57,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10847bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:43:57, skipping insertion in model container [2020-10-28 13:43:57,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:43:57" (3/3) ... [2020-10-28 13:43:57,492 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label51.c [2020-10-28 13:43:57,505 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:43:57,512 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:43:57,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:43:57,559 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:43:57,559 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:43:57,560 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:43:57,560 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:43:57,560 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:43:57,560 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:43:57,560 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:43:57,560 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:43:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:43:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 13:43:57,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:57,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:43:57,605 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:57,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:57,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1944348206, now seen corresponding path program 1 times [2020-10-28 13:43:57,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:57,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905517817] [2020-10-28 13:43:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:57,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:58,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:58,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 13:43:58,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-28 13:43:58,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:58,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:43:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:43:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 13:43:58,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:43:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:58,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:58,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:58,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:43:58,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:58,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:43:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:43:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:43:58,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905517817] [2020-10-28 13:43:58,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:43:58,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:43:58,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830911152] [2020-10-28 13:43:58,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:43:58,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:58,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:43:58,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:43:58,719 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:44:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:13,278 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-28 13:44:13,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:44:13,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-28 13:44:13,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:13,309 INFO L225 Difference]: With dead ends: 1697 [2020-10-28 13:44:13,309 INFO L226 Difference]: Without dead ends: 1013 [2020-10-28 13:44:13,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:44:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-28 13:44:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-28 13:44:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 13:44:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-28 13:44:13,479 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 44 [2020-10-28 13:44:13,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:13,481 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-28 13:44:13,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:44:13,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-28 13:44:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 13:44:13,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:13,491 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:44:13,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:44:13,492 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:13,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:13,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1444886002, now seen corresponding path program 1 times [2020-10-28 13:44:13,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:13,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752524761] [2020-10-28 13:44:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:13,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:15,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:15,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 13:44:15,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:44:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2075 [2020-10-28 13:44:15,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:15,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:44:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:44:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:44:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:15,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:15,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:15,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:15,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:15,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:44:15,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:15,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:15,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:15,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:44:15,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:15,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:16,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:16,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:44:16,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:16,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 13:44:16,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:16,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:16,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:44:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:44:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:44:16,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752524761] [2020-10-28 13:44:16,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:44:16,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:44:16,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856213852] [2020-10-28 13:44:16,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:44:16,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:16,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:44:16,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:44:16,299 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-28 13:44:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:29,815 INFO L93 Difference]: Finished difference Result 2931 states and 4531 transitions. [2020-10-28 13:44:29,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:44:29,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-28 13:44:29,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:29,828 INFO L225 Difference]: With dead ends: 2931 [2020-10-28 13:44:29,828 INFO L226 Difference]: Without dead ends: 1934 [2020-10-28 13:44:29,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:44:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2020-10-28 13:44:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1902. [2020-10-28 13:44:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-10-28 13:44:29,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2466 transitions. [2020-10-28 13:44:29,907 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2466 transitions. Word has length 115 [2020-10-28 13:44:29,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:29,908 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 2466 transitions. [2020-10-28 13:44:29,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:44:29,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2466 transitions. [2020-10-28 13:44:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 13:44:29,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:29,911 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:44:29,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:44:29,912 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:29,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:29,912 INFO L82 PathProgramCache]: Analyzing trace with hash -396470849, now seen corresponding path program 1 times [2020-10-28 13:44:29,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:29,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783654146] [2020-10-28 13:44:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:29,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:31,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:31,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:44:31,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:44:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-10-28 13:44:31,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:31,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:44:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 13:44:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:31,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:31,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:31,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:31,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:44:31,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:31,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:31,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:31,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:31,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:31,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:31,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:31,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:31,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:44:31,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:31,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:44:31,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:31,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:44:31,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:44:31,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783654146] [2020-10-28 13:44:31,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:31,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:44:31,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662559061] [2020-10-28 13:44:31,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:44:31,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:31,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:44:31,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:44:31,412 INFO L87 Difference]: Start difference. First operand 1902 states and 2466 transitions. Second operand 5 states. [2020-10-28 13:44:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:45,044 INFO L93 Difference]: Finished difference Result 4700 states and 6245 transitions. [2020-10-28 13:44:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:44:45,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-28 13:44:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:45,058 INFO L225 Difference]: With dead ends: 4700 [2020-10-28 13:44:45,058 INFO L226 Difference]: Without dead ends: 2358 [2020-10-28 13:44:45,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:44:45,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2020-10-28 13:44:45,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2352. [2020-10-28 13:44:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2020-10-28 13:44:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 2889 transitions. [2020-10-28 13:44:45,139 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 2889 transitions. Word has length 118 [2020-10-28 13:44:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:45,140 INFO L481 AbstractCegarLoop]: Abstraction has 2352 states and 2889 transitions. [2020-10-28 13:44:45,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:44:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 2889 transitions. [2020-10-28 13:44:45,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 13:44:45,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:45,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:44:45,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:44:45,146 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:45,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:45,146 INFO L82 PathProgramCache]: Analyzing trace with hash -265278706, now seen corresponding path program 1 times [2020-10-28 13:44:45,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:45,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873275681] [2020-10-28 13:44:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:45,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:46,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:46,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-28 13:44:46,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:44:46,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1406 [2020-10-28 13:44:46,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:46,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:44:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:44:46,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:46,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:46,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:46,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:46,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:46,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:44:46,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:46,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:46,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:46,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:46,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:44:46,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:46,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:44:46,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:46,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:44:46,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:46,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:44:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:47,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:47,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:44:47,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:47,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 13:44:47,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:47,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:44:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:44:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:44:47,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873275681] [2020-10-28 13:44:47,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:47,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:44:47,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332076773] [2020-10-28 13:44:47,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:44:47,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:47,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:44:47,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:44:47,323 INFO L87 Difference]: Start difference. First operand 2352 states and 2889 transitions. Second operand 7 states. [2020-10-28 13:45:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:01,889 INFO L93 Difference]: Finished difference Result 6506 states and 8157 transitions. [2020-10-28 13:45:01,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:45:01,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-28 13:45:01,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:01,915 INFO L225 Difference]: With dead ends: 6506 [2020-10-28 13:45:01,916 INFO L226 Difference]: Without dead ends: 4160 [2020-10-28 13:45:01,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:45:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2020-10-28 13:45:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 3719. [2020-10-28 13:45:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3719 states. [2020-10-28 13:45:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3719 states to 3719 states and 4569 transitions. [2020-10-28 13:45:02,082 INFO L78 Accepts]: Start accepts. Automaton has 3719 states and 4569 transitions. Word has length 204 [2020-10-28 13:45:02,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:02,084 INFO L481 AbstractCegarLoop]: Abstraction has 3719 states and 4569 transitions. [2020-10-28 13:45:02,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:45:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3719 states and 4569 transitions. [2020-10-28 13:45:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-28 13:45:02,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:02,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:45:02,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:45:02,091 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:02,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:02,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1416103338, now seen corresponding path program 1 times [2020-10-28 13:45:02,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:02,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26807903] [2020-10-28 13:45:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:07,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:07,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:45:07,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:45:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 13:45:07,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:07,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:45:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 13:45:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:07,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:07,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:07,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:07,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:45:07,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:07,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:07,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:07,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:07,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:07,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:07,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:45:07,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:07,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:45:07,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:07,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:07,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:07,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:07,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:07,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:07,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:45:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:07,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:07,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:07,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:45:07,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:07,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:45:07,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:07,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:45:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:45:07,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26807903] [2020-10-28 13:45:07,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:07,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:45:07,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015403340] [2020-10-28 13:45:07,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:45:07,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:07,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:45:07,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:45:07,645 INFO L87 Difference]: Start difference. First operand 3719 states and 4569 transitions. Second operand 5 states. [2020-10-28 13:45:23,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:23,217 INFO L93 Difference]: Finished difference Result 11015 states and 13794 transitions. [2020-10-28 13:45:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:45:23,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-28 13:45:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:23,260 INFO L225 Difference]: With dead ends: 11015 [2020-10-28 13:45:23,260 INFO L226 Difference]: Without dead ends: 7302 [2020-10-28 13:45:23,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:45:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7302 states. [2020-10-28 13:45:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7302 to 6401. [2020-10-28 13:45:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6401 states. [2020-10-28 13:45:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6401 states to 6401 states and 8150 transitions. [2020-10-28 13:45:23,462 INFO L78 Accepts]: Start accepts. Automaton has 6401 states and 8150 transitions. Word has length 206 [2020-10-28 13:45:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:23,463 INFO L481 AbstractCegarLoop]: Abstraction has 6401 states and 8150 transitions. [2020-10-28 13:45:23,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:45:23,463 INFO L276 IsEmpty]: Start isEmpty. Operand 6401 states and 8150 transitions. [2020-10-28 13:45:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-28 13:45:23,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:23,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:45:23,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:45:23,468 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:23,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:23,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1707552346, now seen corresponding path program 1 times [2020-10-28 13:45:23,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:23,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779752698] [2020-10-28 13:45:23,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:23,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:23,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:24,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:27,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:27,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-28 13:45:27,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:45:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3970 [2020-10-28 13:45:27,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:27,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:45:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:45:27,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 13:45:27,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:27,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:27,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:27,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:45:27,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:27,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:27,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:27,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:27,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:27,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:45:27,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:45:27,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:27,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:45:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:27,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:45:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:28,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:28,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:45:28,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:45:28,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-28 13:45:28,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:28,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:28,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:45:28,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 13:45:28,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779752698] [2020-10-28 13:45:28,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:28,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:45:28,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576165875] [2020-10-28 13:45:28,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:45:28,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:28,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:45:28,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:45:28,213 INFO L87 Difference]: Start difference. First operand 6401 states and 8150 transitions. Second operand 5 states. [2020-10-28 13:45:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:44,355 INFO L93 Difference]: Finished difference Result 12800 states and 16302 transitions. [2020-10-28 13:45:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:45:44,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-28 13:45:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:44,392 INFO L225 Difference]: With dead ends: 12800 [2020-10-28 13:45:44,392 INFO L226 Difference]: Without dead ends: 6405 [2020-10-28 13:45:44,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:45:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2020-10-28 13:45:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 6401. [2020-10-28 13:45:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6401 states. [2020-10-28 13:45:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6401 states to 6401 states and 8113 transitions. [2020-10-28 13:45:44,574 INFO L78 Accepts]: Start accepts. Automaton has 6401 states and 8113 transitions. Word has length 214 [2020-10-28 13:45:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:44,574 INFO L481 AbstractCegarLoop]: Abstraction has 6401 states and 8113 transitions. [2020-10-28 13:45:44,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:45:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6401 states and 8113 transitions. [2020-10-28 13:45:44,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-28 13:45:44,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:44,579 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:45:44,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:45:44,579 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:44,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:44,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1931838240, now seen corresponding path program 1 times [2020-10-28 13:45:44,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:44,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773266910] [2020-10-28 13:45:44,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:44,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:44,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:45,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:45,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 13:45:45,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:45:45,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1177 [2020-10-28 13:45:45,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:45,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:45:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:45:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:45:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:45,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:45,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:45,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:45,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:45,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:45:45,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:45,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:45,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:46,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:46,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:45:46,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:46,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:45:46,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:46,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:45:46,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:45:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:46,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:46,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:46,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:45:46,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:45:46,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-28 13:45:46,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:46,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:46,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:46,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:45:46,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:45:46,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773266910] [2020-10-28 13:45:46,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:46,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:45:46,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934797069] [2020-10-28 13:45:46,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:45:46,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:46,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:45:46,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:45:46,554 INFO L87 Difference]: Start difference. First operand 6401 states and 8113 transitions. Second operand 5 states. [2020-10-28 13:45:47,250 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:45:59,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:59,252 INFO L93 Difference]: Finished difference Result 13233 states and 16987 transitions. [2020-10-28 13:45:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:45:59,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-28 13:45:59,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:59,296 INFO L225 Difference]: With dead ends: 13233 [2020-10-28 13:45:59,296 INFO L226 Difference]: Without dead ends: 6838 [2020-10-28 13:45:59,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:45:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6838 states. [2020-10-28 13:45:59,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6838 to 6401. [2020-10-28 13:45:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6401 states. [2020-10-28 13:45:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6401 states to 6401 states and 8113 transitions. [2020-10-28 13:45:59,486 INFO L78 Accepts]: Start accepts. Automaton has 6401 states and 8113 transitions. Word has length 217 [2020-10-28 13:45:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:59,487 INFO L481 AbstractCegarLoop]: Abstraction has 6401 states and 8113 transitions. [2020-10-28 13:45:59,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:45:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6401 states and 8113 transitions. [2020-10-28 13:45:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-28 13:45:59,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:59,493 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2020-10-28 13:45:59,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:45:59,494 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:59,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1772799894, now seen corresponding path program 1 times [2020-10-28 13:45:59,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:59,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862502129] [2020-10-28 13:45:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:59,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:04,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:04,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-28 13:46:04,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:46:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:46:04,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:04,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-28 13:46:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:46:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:04,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:04,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:04,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:04,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:04,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:46:04,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:04,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:04,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:04,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:04,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:04,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:46:04,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:04,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:04,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:04,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:05,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:05,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:46:05,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:46:05,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:05,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:46:05,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:05,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 13:46:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:05,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:05,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:46:05,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:05,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:46:05,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:05,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:46:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:46:05,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-28 13:46:05,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862502129] [2020-10-28 13:46:05,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:05,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:46:05,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829860059] [2020-10-28 13:46:05,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:46:05,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:05,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:46:05,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:46:05,406 INFO L87 Difference]: Start difference. First operand 6401 states and 8113 transitions. Second operand 7 states. [2020-10-28 13:46:23,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:23,104 INFO L93 Difference]: Finished difference Result 15725 states and 20640 transitions. [2020-10-28 13:46:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:46:23,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-28 13:46:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:23,143 INFO L225 Difference]: With dead ends: 15725 [2020-10-28 13:46:23,143 INFO L226 Difference]: Without dead ends: 8859 [2020-10-28 13:46:23,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:46:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8859 states. [2020-10-28 13:46:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8859 to 8814. [2020-10-28 13:46:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8814 states. [2020-10-28 13:46:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8814 states to 8814 states and 11518 transitions. [2020-10-28 13:46:23,390 INFO L78 Accepts]: Start accepts. Automaton has 8814 states and 11518 transitions. Word has length 285 [2020-10-28 13:46:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:23,391 INFO L481 AbstractCegarLoop]: Abstraction has 8814 states and 11518 transitions. [2020-10-28 13:46:23,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:46:23,392 INFO L276 IsEmpty]: Start isEmpty. Operand 8814 states and 11518 transitions. [2020-10-28 13:46:23,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-28 13:46:23,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:23,399 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:46:23,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:46:23,399 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:23,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:23,400 INFO L82 PathProgramCache]: Analyzing trace with hash -233253084, now seen corresponding path program 1 times [2020-10-28 13:46:23,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:23,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978627034] [2020-10-28 13:46:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:23,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:27,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:27,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:46:27,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:46:27,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4122 [2020-10-28 13:46:27,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:27,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:46:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:46:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 13:46:27,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:27,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:27,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:27,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:27,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:27,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:27,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:46:27,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:27,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:27,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:27,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:27,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:27,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:27,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:27,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:46:27,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:27,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:27,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:27,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:27,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:46:27,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:46:27,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:27,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:46:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:46:27,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:46:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:28,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:28,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:28,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:28,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:46:28,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:46:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 13:46:28,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:28,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:46:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-28 13:46:28,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978627034] [2020-10-28 13:46:28,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:28,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:46:28,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173505837] [2020-10-28 13:46:28,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:46:28,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:28,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:46:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:46:28,313 INFO L87 Difference]: Start difference. First operand 8814 states and 11518 transitions. Second operand 5 states. [2020-10-28 13:46:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:43,773 INFO L93 Difference]: Finished difference Result 24646 states and 33032 transitions. [2020-10-28 13:46:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:46:43,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-28 13:46:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:43,830 INFO L225 Difference]: With dead ends: 24646 [2020-10-28 13:46:43,830 INFO L226 Difference]: Without dead ends: 14502 [2020-10-28 13:46:43,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:46:43,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14502 states. [2020-10-28 13:46:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14502 to 14498. [2020-10-28 13:46:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14498 states. [2020-10-28 13:46:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14498 states to 14498 states and 17879 transitions. [2020-10-28 13:46:44,317 INFO L78 Accepts]: Start accepts. Automaton has 14498 states and 17879 transitions. Word has length 288 [2020-10-28 13:46:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:44,318 INFO L481 AbstractCegarLoop]: Abstraction has 14498 states and 17879 transitions. [2020-10-28 13:46:44,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:46:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14498 states and 17879 transitions. [2020-10-28 13:46:44,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-28 13:46:44,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:44,326 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:46:44,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:46:44,327 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:44,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:44,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1371283804, now seen corresponding path program 1 times [2020-10-28 13:46:44,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:44,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139261483] [2020-10-28 13:46:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:44,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:44,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:49,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:49,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-28 13:46:49,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:46:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:46:49,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:49,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-28 13:46:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:46:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:49,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:49,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:49,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:46:49,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:49,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:49,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:49,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:49,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:49,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:49,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:49,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:49,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:46:49,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:49,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:49,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:49,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:49,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:49,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:46:49,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:49,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:46:49,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:49,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:46:49,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:49,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 13:46:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:49,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:49,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:49,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:46:49,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:49,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:46:49,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:49,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:46:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:46:49,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-28 13:46:50,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139261483] [2020-10-28 13:46:50,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:50,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:46:50,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302399845] [2020-10-28 13:46:50,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:46:50,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:46:50,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:46:50,047 INFO L87 Difference]: Start difference. First operand 14498 states and 17879 transitions. Second operand 7 states. [2020-10-28 13:46:54,540 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:47:09,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:47:09,496 INFO L93 Difference]: Finished difference Result 34893 states and 43757 transitions. [2020-10-28 13:47:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:47:09,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-28 13:47:09,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:47:09,569 INFO L225 Difference]: With dead ends: 34893 [2020-10-28 13:47:09,569 INFO L226 Difference]: Without dead ends: 20400 [2020-10-28 13:47:09,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:47:09,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20400 states. [2020-10-28 13:47:09,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20400 to 18180. [2020-10-28 13:47:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18180 states. [2020-10-28 13:47:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18180 states to 18180 states and 22364 transitions. [2020-10-28 13:47:10,035 INFO L78 Accepts]: Start accepts. Automaton has 18180 states and 22364 transitions. Word has length 302 [2020-10-28 13:47:10,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:47:10,036 INFO L481 AbstractCegarLoop]: Abstraction has 18180 states and 22364 transitions. [2020-10-28 13:47:10,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:47:10,036 INFO L276 IsEmpty]: Start isEmpty. Operand 18180 states and 22364 transitions. [2020-10-28 13:47:10,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-28 13:47:10,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:47:10,047 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:47:10,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:47:10,047 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:47:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:47:10,048 INFO L82 PathProgramCache]: Analyzing trace with hash -331615383, now seen corresponding path program 1 times [2020-10-28 13:47:10,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:47:10,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976560920] [2020-10-28 13:47:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:47:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:10,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:13,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:15,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:15,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-28 13:47:15,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:47:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4978 [2020-10-28 13:47:15,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:15,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:47:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-28 13:47:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:47:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:47:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:15,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:15,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:47:15,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:15,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:47:15,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:15,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:15,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:15,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:15,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:15,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:15,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:47:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:15,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:15,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:15,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:47:15,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:47:15,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:15,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:47:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:15,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:15,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:15,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:47:15,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:15,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:47:15,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:15,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:15,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:15,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:15,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:47:15,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:47:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:15,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:15,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:47:15,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:15,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:47:15,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:15,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:47:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:47:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:47:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 243 proven. 37 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 13:47:15,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976560920] [2020-10-28 13:47:15,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:47:15,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:47:15,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775252235] [2020-10-28 13:47:15,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:47:15,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:15,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:47:15,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:47:15,875 INFO L87 Difference]: Start difference. First operand 18180 states and 22364 transitions. Second operand 6 states. [2020-10-28 13:47:19,456 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 66