/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:41:56,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:41:56,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:41:56,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:41:56,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:41:56,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:41:56,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:41:56,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:41:56,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:41:56,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:41:56,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:41:56,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:41:56,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:41:56,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:41:56,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:41:56,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:41:56,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:41:56,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:41:56,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:41:56,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:41:56,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:41:56,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:41:56,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:41:56,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:41:56,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:41:56,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:41:56,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:41:56,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:41:56,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:41:56,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:41:56,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:41:56,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:41:56,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:41:56,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:41:56,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:41:56,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:41:56,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:41:56,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:41:56,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:41:56,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:41:56,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:41:56,836 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 [2020-10-29 12:41:56,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:41:56,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:41:56,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:41:56,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:41:56,867 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:41:56,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:41:56,867 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:41:56,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:41:56,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:41:56,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:41:56,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:41:56,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:41:56,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:41:56,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:41:56,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:41:56,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:41:56,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:41:56,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:41:56,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:41:56,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:41:56,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:41:56,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:41:56,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:41:56,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:41:56,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:41:56,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:41:56,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:41:56,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:41:56,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:41:56,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:41:57,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:41:57,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:41:57,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:41:57,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:41:57,383 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:41:57,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2020-10-29 12:41:57,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/156b1ab83/f336872df36540bf82fb7fc9e4daac38/FLAG10d5ef7e2 [2020-10-29 12:41:58,224 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:41:58,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2020-10-29 12:41:58,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/156b1ab83/f336872df36540bf82fb7fc9e4daac38/FLAG10d5ef7e2 [2020-10-29 12:41:58,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/156b1ab83/f336872df36540bf82fb7fc9e4daac38 [2020-10-29 12:41:58,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:41:58,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:41:58,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:41:58,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:41:58,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:41:58,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:41:58" (1/1) ... [2020-10-29 12:41:58,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6015e014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:58, skipping insertion in model container [2020-10-29 12:41:58,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:41:58" (1/1) ... [2020-10-29 12:41:58,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:41:58,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:41:58,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:41:58,992 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:41:59,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:41:59,097 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:41:59,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:59 WrapperNode [2020-10-29 12:41:59,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:41:59,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:41:59,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:41:59,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:41:59,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:59" (1/1) ... [2020-10-29 12:41:59,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:59" (1/1) ... [2020-10-29 12:41:59,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:59" (1/1) ... [2020-10-29 12:41:59,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:59" (1/1) ... [2020-10-29 12:41:59,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:59" (1/1) ... [2020-10-29 12:41:59,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:59" (1/1) ... [2020-10-29 12:41:59,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:59" (1/1) ... [2020-10-29 12:41:59,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:41:59,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:41:59,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:41:59,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:41:59,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:59" (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 [2020-10-29 12:41:59,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:41:59,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:41:59,250 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:41:59,250 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:41:59,250 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:41:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:41:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:41:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:41:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:41:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:41:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:41:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:41:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:41:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:41:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:41:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:41:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:41:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:41:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:41:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:41:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:41:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:41:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:41:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:41:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:41:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:41:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:41:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:41:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:41:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:41:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:41:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:41:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:41:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:42:00,332 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:42:00,333 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:42:00,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:42:00 BoogieIcfgContainer [2020-10-29 12:42:00,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:42:00,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:42:00,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:42:00,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:42:00,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:41:58" (1/3) ... [2020-10-29 12:42:00,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd35182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:42:00, skipping insertion in model container [2020-10-29 12:42:00,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:41:59" (2/3) ... [2020-10-29 12:42:00,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd35182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:42:00, skipping insertion in model container [2020-10-29 12:42:00,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:42:00" (3/3) ... [2020-10-29 12:42:00,346 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2020-10-29 12:42:00,360 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:42:00,366 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:42:00,382 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:42:00,416 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:42:00,416 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:42:00,416 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:42:00,416 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:42:00,417 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:42:00,417 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:42:00,417 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:42:00,417 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:42:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-29 12:42:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 12:42:00,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:42:00,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:42:00,456 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:42:00,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:42:00,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1255270413, now seen corresponding path program 1 times [2020-10-29 12:42:00,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:42:00,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490047960] [2020-10-29 12:42:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:42:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:00,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:01,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:01,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 12:42:01,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-29 12:42:01,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:01,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:42:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:42:01,584 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:42:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:42:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:01,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:01,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:01,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:42:01,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:42:01,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:01,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:01,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:42:01,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:42:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:01,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:01,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:01,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:42:01,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:01,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:42:01,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:01,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:01,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:01,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:42:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:01,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:01,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:01,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:42:01,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:01,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:42:01,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:01,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:01,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:01,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:42:01,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:01,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:01,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:42:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:01,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:01,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:01,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:01,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:42:01,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:01,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:01,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 12:42:01,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:42:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:01,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:01,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:01,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:01,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:42:01,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:01,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:01,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:01,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:42:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:01,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:01,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:01,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:01,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:42:01,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:01,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:01,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:42:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:01,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:01,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:01,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:42:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:42:01,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:01,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:42:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:01,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:42:01,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490047960] [2020-10-29 12:42:01,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:42:01,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:42:01,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510894111] [2020-10-29 12:42:01,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:42:01,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:42:01,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:42:01,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:42:01,966 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 6 states. [2020-10-29 12:42:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:42:03,316 INFO L93 Difference]: Finished difference Result 307 states and 486 transitions. [2020-10-29 12:42:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:42:03,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-29 12:42:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:42:03,328 INFO L225 Difference]: With dead ends: 307 [2020-10-29 12:42:03,329 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 12:42:03,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:42:03,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 12:42:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2020-10-29 12:42:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-29 12:42:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 280 transitions. [2020-10-29 12:42:03,403 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 280 transitions. Word has length 66 [2020-10-29 12:42:03,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:42:03,403 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 280 transitions. [2020-10-29 12:42:03,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:42:03,404 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 280 transitions. [2020-10-29 12:42:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 12:42:03,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:42:03,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:42:03,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:42:03,408 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:42:03,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:42:03,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1194329717, now seen corresponding path program 1 times [2020-10-29 12:42:03,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:42:03,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832776780] [2020-10-29 12:42:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:42:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 12:42:04,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:04,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-29 12:42:04,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:42:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 12:42:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:42:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:04,777 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:42:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:42:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:42:04,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:42:04,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:04,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:04,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:42:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:04,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:42:04,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:42:04,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:42:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:42:04,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:42:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:42:04,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:04,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:42:04,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:42:04,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:42:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:42:04,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:42:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:04,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:05,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:05,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:05,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:05,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:42:05,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:05,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:05,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:05,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:42:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:05,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:05,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:05,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:05,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:42:05,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:05,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:05,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:05,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:05,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:05,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:05,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:42:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:05,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:05,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:05,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:05,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:42:05,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:05,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:05,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:05,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:05,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:05,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:05,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:42:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:05,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:05,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:42:05,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:05,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:42:05,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:05,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:05,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:05,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:42:05,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:05,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:42:05,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832776780] [2020-10-29 12:42:05,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:42:05,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 12:42:05,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799472383] [2020-10-29 12:42:05,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:42:05,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:42:05,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:42:05,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:42:05,166 INFO L87 Difference]: Start difference. First operand 175 states and 280 transitions. Second operand 12 states. [2020-10-29 12:42:05,825 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:42:06,114 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:42:06,480 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:42:06,756 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:42:08,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:42:08,438 INFO L93 Difference]: Finished difference Result 302 states and 474 transitions. [2020-10-29 12:42:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:42:08,438 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-29 12:42:08,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:42:08,442 INFO L225 Difference]: With dead ends: 302 [2020-10-29 12:42:08,442 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 12:42:08,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:42:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 12:42:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2020-10-29 12:42:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-29 12:42:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 250 transitions. [2020-10-29 12:42:08,474 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 250 transitions. Word has length 66 [2020-10-29 12:42:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:42:08,474 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 250 transitions. [2020-10-29 12:42:08,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:42:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 250 transitions. [2020-10-29 12:42:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 12:42:08,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:42:08,483 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, 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, 1, 1, 1] [2020-10-29 12:42:08,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:42:08,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:42:08,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:42:08,486 INFO L82 PathProgramCache]: Analyzing trace with hash 120280502, now seen corresponding path program 1 times [2020-10-29 12:42:08,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:42:08,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287643009] [2020-10-29 12:42:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:42:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:08,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:09,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:13,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:13,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 12:42:13,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:42:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 12:42:13,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:13,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:42:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 12:42:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 12:42:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:13,831 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:42:13,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:42:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:13,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:13,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:42:13,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:13,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:42:13,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:13,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:13,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:13,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:42:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:13,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:13,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:13,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:42:13,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:13,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:42:13,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:13,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:13,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:13,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:42:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:13,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:42:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:13,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:13,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:42:13,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:13,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:42:13,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:13,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:13,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:42:13,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:42:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:14,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:14,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:14,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:42:14,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:14,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:42:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:42:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:42:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:14,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:42:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:14,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:14,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:14,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:42:14,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:14,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:14,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:42:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:14,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:14,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:14,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:14,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:42:14,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:14,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:14,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:14,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:14,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:14,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:14,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:42:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:14,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:14,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:42:14,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:42:14,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:14,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:42:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:14,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:42:14,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287643009] [2020-10-29 12:42:14,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:42:14,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:42:14,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574071350] [2020-10-29 12:42:14,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:42:14,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:42:14,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:42:14,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:42:14,250 INFO L87 Difference]: Start difference. First operand 175 states and 250 transitions. Second operand 9 states. [2020-10-29 12:42:14,504 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:42:16,853 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:42:17,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:42:17,395 INFO L93 Difference]: Finished difference Result 412 states and 616 transitions. [2020-10-29 12:42:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:42:17,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-29 12:42:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:42:17,403 INFO L225 Difference]: With dead ends: 412 [2020-10-29 12:42:17,403 INFO L226 Difference]: Without dead ends: 309 [2020-10-29 12:42:17,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:42:17,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-29 12:42:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 267. [2020-10-29 12:42:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-29 12:42:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 388 transitions. [2020-10-29 12:42:17,484 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 388 transitions. Word has length 95 [2020-10-29 12:42:17,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:42:17,484 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 388 transitions. [2020-10-29 12:42:17,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:42:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 388 transitions. [2020-10-29 12:42:17,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 12:42:17,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:42:17,490 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, 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, 1, 1, 1, 1, 1] [2020-10-29 12:42:17,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:42:17,491 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:42:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:42:17,491 INFO L82 PathProgramCache]: Analyzing trace with hash 680270721, now seen corresponding path program 1 times [2020-10-29 12:42:17,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:42:17,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831237695] [2020-10-29 12:42:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:42:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:17,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:17,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:17,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:22,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:22,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 12:42:22,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:42:22,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:42:22,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:22,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:42:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:42:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:42:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:22,853 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:42:22,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:42:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:22,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:22,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:22,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:42:22,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:22,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:42:22,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:22,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:22,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:42:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:22,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:22,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:42:22,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:22,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 12:42:22,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:22,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:42:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:42:22,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:42:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:23,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:23,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:42:23,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:42:23,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:23,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:42:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:23,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:42:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:23,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:23,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:23,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:42:23,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:23,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:42:23,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:23,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:42:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:42:23,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:23,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:42:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:23,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:23,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:23,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:42:23,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:23,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:23,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:23,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:42:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:23,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:23,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:23,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:23,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:42:23,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:23,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:23,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:23,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:23,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 12:42:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:23,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:23,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:42:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:42:23,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:23,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:42:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:42:23,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831237695] [2020-10-29 12:42:23,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:42:23,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:42:23,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246129445] [2020-10-29 12:42:23,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:42:23,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:42:23,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:42:23,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:42:23,334 INFO L87 Difference]: Start difference. First operand 267 states and 388 transitions. Second operand 9 states. [2020-10-29 12:42:23,594 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:42:23,863 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:42:24,171 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:42:24,914 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-29 12:42:25,736 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:42:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:42:28,581 INFO L93 Difference]: Finished difference Result 989 states and 1446 transitions. [2020-10-29 12:42:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:42:28,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-29 12:42:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:42:28,589 INFO L225 Difference]: With dead ends: 989 [2020-10-29 12:42:28,590 INFO L226 Difference]: Without dead ends: 745 [2020-10-29 12:42:28,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:42:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-10-29 12:42:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 671. [2020-10-29 12:42:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-29 12:42:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 971 transitions. [2020-10-29 12:42:28,671 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 971 transitions. Word has length 97 [2020-10-29 12:42:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:42:28,672 INFO L481 AbstractCegarLoop]: Abstraction has 671 states and 971 transitions. [2020-10-29 12:42:28,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:42:28,672 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 971 transitions. [2020-10-29 12:42:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 12:42:28,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:42:28,677 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, 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, 1, 1, 1, 1, 1, 1] [2020-10-29 12:42:28,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:42:28,678 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:42:28,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:42:28,678 INFO L82 PathProgramCache]: Analyzing trace with hash -678786669, now seen corresponding path program 1 times [2020-10-29 12:42:28,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:42:28,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615017689] [2020-10-29 12:42:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:42:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:33,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:33,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:42:33,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:42:33,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 12:42:33,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:33,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:33,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:42:33,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:42:33,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 12:42:33,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:33,973 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:42:33,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:42:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:33,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:33,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:42:33,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:33,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:42:33,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:33,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:33,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:42:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:42:34,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 12:42:34,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:42:34,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:34,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:42:34,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:42:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:42:34,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:42:34,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:42:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:42:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:42:34,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:42:34,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:42:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:42:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:42:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:34,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:42:34,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 12:42:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:34,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:42:34,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:42:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:34,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 12:42:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:42:34,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:42:34,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:42:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:34,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:42:34,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615017689] [2020-10-29 12:42:34,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:42:34,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:42:34,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565947673] [2020-10-29 12:42:34,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:42:34,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:42:34,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:42:34,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:42:34,387 INFO L87 Difference]: Start difference. First operand 671 states and 971 transitions. Second operand 9 states. [2020-10-29 12:42:34,677 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:42:34,955 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:42:35,237 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:42:36,075 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-29 12:42:36,774 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:42:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:42:39,994 INFO L93 Difference]: Finished difference Result 2516 states and 3650 transitions. [2020-10-29 12:42:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:42:39,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-29 12:42:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:42:40,014 INFO L225 Difference]: With dead ends: 2516 [2020-10-29 12:42:40,014 INFO L226 Difference]: Without dead ends: 1904 [2020-10-29 12:42:40,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:42:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-29 12:42:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1733. [2020-10-29 12:42:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-10-29 12:42:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2481 transitions. [2020-10-29 12:42:40,191 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2481 transitions. Word has length 98 [2020-10-29 12:42:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:42:40,191 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2481 transitions. [2020-10-29 12:42:40,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:42:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2481 transitions. [2020-10-29 12:42:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 12:42:40,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:42:40,199 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, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:42:40,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:42:40,200 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:42:40,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:42:40,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1691878522, now seen corresponding path program 1 times [2020-10-29 12:42:40,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:42:40,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875187071] [2020-10-29 12:42:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:42:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:40,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:40,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:40,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:41,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:45,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:45,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 12:42:45,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:42:45,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:42:45,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:45,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:42:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 12:42:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 12:42:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:45,524 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:42:45,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:42:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:45,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:45,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:45,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:42:45,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:42:45,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:45,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:45,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:42:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:45,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:45,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:45,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:42:45,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:45,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 12:42:45,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:45,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:45,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:45,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:42:45,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:45,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:42:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:45,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:45,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:42:45,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:45,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:42:45,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:45,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:42:45,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:45,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:42:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:45,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:45,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:42:45,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:45,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:42:45,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:45,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:42:45,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:45,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:42:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:45,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:45,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:45,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:45,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:45,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:42:45,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:45,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:42:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:45,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:42:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:45,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:45,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:45,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:45,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:45,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:42:45,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:45,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:42:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:42:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:42:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 12:42:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:45,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:45,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:42:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:42:45,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:45,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:42:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:42:45,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875187071] [2020-10-29 12:42:45,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:42:45,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:42:45,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397934666] [2020-10-29 12:42:45,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:42:45,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:42:45,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:42:45,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:42:45,861 INFO L87 Difference]: Start difference. First operand 1733 states and 2481 transitions. Second operand 9 states. [2020-10-29 12:42:46,159 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:42:48,668 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:42:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:42:49,033 INFO L93 Difference]: Finished difference Result 4259 states and 6327 transitions. [2020-10-29 12:42:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:42:49,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-29 12:42:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:42:49,054 INFO L225 Difference]: With dead ends: 4259 [2020-10-29 12:42:49,054 INFO L226 Difference]: Without dead ends: 3027 [2020-10-29 12:42:49,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:42:49,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3027 states. [2020-10-29 12:42:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 2672. [2020-10-29 12:42:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2672 states. [2020-10-29 12:42:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3881 transitions. [2020-10-29 12:42:49,309 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3881 transitions. Word has length 99 [2020-10-29 12:42:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:42:49,310 INFO L481 AbstractCegarLoop]: Abstraction has 2672 states and 3881 transitions. [2020-10-29 12:42:49,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:42:49,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3881 transitions. [2020-10-29 12:42:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 12:42:49,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:42:49,317 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:42:49,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:42:49,317 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:42:49,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:42:49,318 INFO L82 PathProgramCache]: Analyzing trace with hash -645108655, now seen corresponding path program 1 times [2020-10-29 12:42:49,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:42:49,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489920439] [2020-10-29 12:42:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:42:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:49,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:54,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:54,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 12:42:54,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:42:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:42:54,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:54,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:42:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:42:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 12:42:54,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:54,614 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:42:54,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:42:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:54,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:54,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:54,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:42:54,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:54,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:42:54,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:54,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:54,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:42:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:54,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:54,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:42:54,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:54,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 12:42:54,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:54,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:54,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:42:54,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:54,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:42:54,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:54,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:42:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:54,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:54,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:54,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:42:54,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:54,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:42:54,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:54,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:42:54,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:54,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:42:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:54,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:54,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:42:54,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:54,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:42:54,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:54,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:42:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:55,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:42:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:55,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:55,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:55,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:55,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:42:55,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:55,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:42:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:42:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:55,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:55,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:42:55,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:42:55,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:55,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:42:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:42:55,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:55,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 12:42:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:55,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:55,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:42:55,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:42:55,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:55,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:42:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:55,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:42:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:42:55,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489920439] [2020-10-29 12:42:55,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:42:55,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:42:55,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877486998] [2020-10-29 12:42:55,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:42:55,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:42:55,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:42:55,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:42:55,214 INFO L87 Difference]: Start difference. First operand 2672 states and 3881 transitions. Second operand 9 states. [2020-10-29 12:42:55,502 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:42:55,795 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:42:56,363 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-29 12:42:56,707 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:42:57,938 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:43:01,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:43:01,865 INFO L93 Difference]: Finished difference Result 9836 states and 14612 transitions. [2020-10-29 12:43:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:43:01,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-29 12:43:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:43:01,917 INFO L225 Difference]: With dead ends: 9836 [2020-10-29 12:43:01,917 INFO L226 Difference]: Without dead ends: 7526 [2020-10-29 12:43:01,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:43:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2020-10-29 12:43:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 6821. [2020-10-29 12:43:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6821 states. [2020-10-29 12:43:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6821 states to 6821 states and 9918 transitions. [2020-10-29 12:43:02,553 INFO L78 Accepts]: Start accepts. Automaton has 6821 states and 9918 transitions. Word has length 101 [2020-10-29 12:43:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:43:02,553 INFO L481 AbstractCegarLoop]: Abstraction has 6821 states and 9918 transitions. [2020-10-29 12:43:02,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:43:02,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6821 states and 9918 transitions. [2020-10-29 12:43:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 12:43:02,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:43:02,568 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:43:02,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:43:02,569 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:43:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:43:02,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1299806655, now seen corresponding path program 1 times [2020-10-29 12:43:02,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:43:02,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843362613] [2020-10-29 12:43:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:43:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:02,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:07,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:07,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 12:43:07,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:43:07,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:43:07,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:07,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:43:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:43:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 12:43:07,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:07,885 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:43:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:43:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:07,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:07,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:43:07,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:43:07,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:07,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:07,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:43:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:07,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:07,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:43:07,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:07,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 12:43:07,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:07,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:43:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:43:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:08,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:43:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:08,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:08,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:43:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:43:08,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:08,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:43:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:08,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:43:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:08,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:08,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:08,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:43:08,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:08,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:43:08,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:08,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:43:08,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:43:08,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:43:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:08,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:08,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:43:08,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:08,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:43:08,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:08,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:08,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:43:08,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:08,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:43:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:08,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:08,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:08,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:43:08,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:43:08,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:08,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:43:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:43:08,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 12:43:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:08,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:08,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:43:08,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:08,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:43:08,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:08,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:08,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:08,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:43:08,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:08,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:43:08,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843362613] [2020-10-29 12:43:08,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:43:08,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:43:08,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127566383] [2020-10-29 12:43:08,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:43:08,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:43:08,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:43:08,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:43:08,373 INFO L87 Difference]: Start difference. First operand 6821 states and 9918 transitions. Second operand 9 states. [2020-10-29 12:43:08,635 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:43:08,927 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:43:09,345 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:43:09,884 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-29 12:43:10,815 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:43:14,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:43:14,965 INFO L93 Difference]: Finished difference Result 23190 states and 33924 transitions. [2020-10-29 12:43:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:43:14,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-29 12:43:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:43:15,071 INFO L225 Difference]: With dead ends: 23190 [2020-10-29 12:43:15,071 INFO L226 Difference]: Without dead ends: 16507 [2020-10-29 12:43:15,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:43:15,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16507 states. [2020-10-29 12:43:16,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16507 to 15151. [2020-10-29 12:43:16,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15151 states. [2020-10-29 12:43:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15151 states to 15151 states and 21615 transitions. [2020-10-29 12:43:16,503 INFO L78 Accepts]: Start accepts. Automaton has 15151 states and 21615 transitions. Word has length 102 [2020-10-29 12:43:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:43:16,504 INFO L481 AbstractCegarLoop]: Abstraction has 15151 states and 21615 transitions. [2020-10-29 12:43:16,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:43:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15151 states and 21615 transitions. [2020-10-29 12:43:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 12:43:16,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:43:16,533 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:43:16,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:43:16,533 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:43:16,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:43:16,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1734612812, now seen corresponding path program 1 times [2020-10-29 12:43:16,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:43:16,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941797228] [2020-10-29 12:43:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:43:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:16,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:21,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:21,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 12:43:21,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:43:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:43:21,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:21,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:43:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:43:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 12:43:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:21,853 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:43:21,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:43:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:21,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:21,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:43:21,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:43:21,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:21,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:21,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:21,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:43:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:21,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:21,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:22,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:22,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 12:43:22,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:43:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 12:43:22,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:22,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:43:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:43:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:43:22,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:43:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:22,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:22,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:22,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:43:22,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:22,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:43:22,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:22,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:43:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:22,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:43:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:22,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:22,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:43:22,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:22,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:43:22,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:22,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:22,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:22,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:43:22,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:43:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:22,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:22,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:43:22,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:43:22,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:22,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:43:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:43:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:22,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:22,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:43:22,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:22,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:43:22,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:22,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:43:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:43:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 12:43:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:22,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:22,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:43:22,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:22,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:43:22,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:22,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:43:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:22,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:43:22,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941797228] [2020-10-29 12:43:22,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:43:22,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:43:22,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563617923] [2020-10-29 12:43:22,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:43:22,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:43:22,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:43:22,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:43:22,273 INFO L87 Difference]: Start difference. First operand 15151 states and 21615 transitions. Second operand 10 states. [2020-10-29 12:43:22,574 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:43:22,905 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:43:23,488 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:43:23,838 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:43:24,252 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 12:43:24,530 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:43:24,854 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:43:25,151 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 12:43:30,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:43:30,585 INFO L93 Difference]: Finished difference Result 30034 states and 42811 transitions. [2020-10-29 12:43:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:43:30,586 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-10-29 12:43:30,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:43:30,654 INFO L225 Difference]: With dead ends: 30034 [2020-10-29 12:43:30,655 INFO L226 Difference]: Without dead ends: 15002 [2020-10-29 12:43:30,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:43:30,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15002 states. [2020-10-29 12:43:31,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15002 to 13215. [2020-10-29 12:43:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13215 states. [2020-10-29 12:43:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 18881 transitions. [2020-10-29 12:43:31,865 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 18881 transitions. Word has length 103 [2020-10-29 12:43:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:43:31,865 INFO L481 AbstractCegarLoop]: Abstraction has 13215 states and 18881 transitions. [2020-10-29 12:43:31,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:43:31,865 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 18881 transitions. [2020-10-29 12:43:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 12:43:31,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:43:31,890 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:43:31,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:43:31,891 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:43:31,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:43:31,891 INFO L82 PathProgramCache]: Analyzing trace with hash 341906646, now seen corresponding path program 1 times [2020-10-29 12:43:31,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:43:31,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653748699] [2020-10-29 12:43:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:43:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:31,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:32,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:34,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:36,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:36,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 12:43:36,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:43:36,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:43:36,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:36,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:43:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 12:43:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 12:43:36,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:37,194 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:43:37,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:43:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:37,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:37,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:37,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:43:37,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:37,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:43:37,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:37,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:37,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:43:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:37,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:37,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:37,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:43:37,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:43:37,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:37,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:43:37,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:37,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:43:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:37,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:37,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:37,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:43:37,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:43:37,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:37,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:43:37,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:37,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:43:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:37,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:37,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:43:37,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:37,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:43:37,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:37,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:37,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:37,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:37,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:43:37,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:43:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:37,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:37,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:43:37,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:37,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:43:37,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:37,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:43:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:43:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:43:37,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:37,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:43:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:37,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:37,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:37,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:43:37,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:37,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:43:37,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:37,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:43:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:37,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 12:43:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:37,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:37,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:43:37,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:43:37,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:37,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:43:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:43:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:43:37,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653748699] [2020-10-29 12:43:37,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:43:37,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:43:37,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700849131] [2020-10-29 12:43:37,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:43:37,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:43:37,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:43:37,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:43:37,524 INFO L87 Difference]: Start difference. First operand 13215 states and 18881 transitions. Second operand 9 states. [2020-10-29 12:43:37,803 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:43:40,931 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:43:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:43:41,556 INFO L93 Difference]: Finished difference Result 30373 states and 44179 transitions. [2020-10-29 12:43:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:43:41,557 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-29 12:43:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:43:41,740 INFO L225 Difference]: With dead ends: 30373 [2020-10-29 12:43:41,741 INFO L226 Difference]: Without dead ends: 20350 [2020-10-29 12:43:41,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:43:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20350 states. [2020-10-29 12:43:43,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20350 to 18409. [2020-10-29 12:43:43,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18409 states. [2020-10-29 12:43:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18409 states to 18409 states and 26165 transitions. [2020-10-29 12:43:43,254 INFO L78 Accepts]: Start accepts. Automaton has 18409 states and 26165 transitions. Word has length 103 [2020-10-29 12:43:43,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:43:43,254 INFO L481 AbstractCegarLoop]: Abstraction has 18409 states and 26165 transitions. [2020-10-29 12:43:43,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:43:43,254 INFO L276 IsEmpty]: Start isEmpty. Operand 18409 states and 26165 transitions. [2020-10-29 12:43:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 12:43:43,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:43:43,281 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:43:43,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:43:43,281 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:43:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:43:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1698013781, now seen corresponding path program 1 times [2020-10-29 12:43:43,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:43:43,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589923460] [2020-10-29 12:43:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:43:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:43,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:43,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:44,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:44,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:48,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:48,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 12:43:48,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:43:48,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:43:48,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:48,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:43:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:43:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:43:48,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:48,593 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:43:48,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:43:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:48,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:48,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:43:48,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:43:48,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:48,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:48,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:43:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:48,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:48,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:43:48,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:43:48,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:48,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:43:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:43:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:43:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:48,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:48,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:48,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:43:48,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:48,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:43:48,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:48,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:48,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:43:48,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:43:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:43:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:48,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:48,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:43:48,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:43:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:48,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:43:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:48,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:43:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:48,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:48,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:43:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:43:48,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:48,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:43:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:43:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:43:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:48,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:48,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:48,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:43:48,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:43:48,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:48,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:48,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:43:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:48,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 12:43:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:48,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:48,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:43:48,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:43:48,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:48,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:43:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:43:48,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589923460] [2020-10-29 12:43:48,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:43:48,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:43:48,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173295800] [2020-10-29 12:43:48,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:43:48,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:43:48,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:43:48,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:43:48,921 INFO L87 Difference]: Start difference. First operand 18409 states and 26165 transitions. Second operand 9 states. [2020-10-29 12:43:49,206 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:43:49,498 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 12:43:49,859 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 12:43:50,378 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-29 12:43:51,396 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:43:56,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:43:56,781 INFO L93 Difference]: Finished difference Result 58359 states and 84243 transitions. [2020-10-29 12:43:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:43:56,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-29 12:43:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:43:56,946 INFO L225 Difference]: With dead ends: 58359 [2020-10-29 12:43:56,946 INFO L226 Difference]: Without dead ends: 42016 [2020-10-29 12:43:56,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:43:57,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42016 states. [2020-10-29 12:43:59,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42016 to 39134. [2020-10-29 12:43:59,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39134 states. [2020-10-29 12:43:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39134 states to 39134 states and 54790 transitions. [2020-10-29 12:43:59,392 INFO L78 Accepts]: Start accepts. Automaton has 39134 states and 54790 transitions. Word has length 105 [2020-10-29 12:43:59,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:43:59,392 INFO L481 AbstractCegarLoop]: Abstraction has 39134 states and 54790 transitions. [2020-10-29 12:43:59,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:43:59,392 INFO L276 IsEmpty]: Start isEmpty. Operand 39134 states and 54790 transitions. [2020-10-29 12:43:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:43:59,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:43:59,445 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:43:59,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:43:59,445 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:43:59,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:43:59,446 INFO L82 PathProgramCache]: Analyzing trace with hash 177339759, now seen corresponding path program 1 times [2020-10-29 12:43:59,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:43:59,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954808399] [2020-10-29 12:43:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:43:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:59,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:01,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:01,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:04,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:04,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 12:44:04,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:44:04,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:44:04,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:04,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:04,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:44:04,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:44:04,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 12:44:04,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:04,780 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:44:04,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:44:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:04,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:04,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:44:04,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:44:04,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:04,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:44:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:44:04,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:44:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:04,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:04,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:44:04,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:44:04,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:04,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:44:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:44:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:04,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:44:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:04,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:04,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:44:04,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:44:04,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:04,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:44:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:44:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:04,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:44:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:04,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:04,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:44:04,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:04,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:44:04,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:04,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:44:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:44:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:44:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:04,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:04,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:04,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:44:04,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:04,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:44:04,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:04,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:44:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:44:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:44:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:05,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 12:44:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:05,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:05,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:05,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:44:05,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:05,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:44:05,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:05,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:44:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:44:05,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:44:05,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:05,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 12:44:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:05,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:05,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:44:05,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:05,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:44:05,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:05,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:44:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:44:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:44:05,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:44:05,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954808399] [2020-10-29 12:44:05,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:44:05,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:44:05,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191229653] [2020-10-29 12:44:05,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:44:05,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:44:05,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:44:05,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:44:05,090 INFO L87 Difference]: Start difference. First operand 39134 states and 54790 transitions. Second operand 9 states. [2020-10-29 12:44:05,407 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:44:05,712 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:44:06,094 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:44:06,921 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:44:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:44:13,246 INFO L93 Difference]: Finished difference Result 102279 states and 145453 transitions. [2020-10-29 12:44:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:44:13,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-29 12:44:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:44:13,504 INFO L225 Difference]: With dead ends: 102279 [2020-10-29 12:44:13,505 INFO L226 Difference]: Without dead ends: 68719 [2020-10-29 12:44:13,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:44:13,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68719 states. [2020-10-29 12:44:18,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68719 to 64270. [2020-10-29 12:44:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64270 states. [2020-10-29 12:44:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64270 states to 64270 states and 88574 transitions. [2020-10-29 12:44:18,408 INFO L78 Accepts]: Start accepts. Automaton has 64270 states and 88574 transitions. Word has length 106 [2020-10-29 12:44:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:44:18,409 INFO L481 AbstractCegarLoop]: Abstraction has 64270 states and 88574 transitions. [2020-10-29 12:44:18,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:44:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 64270 states and 88574 transitions. [2020-10-29 12:44:18,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 12:44:18,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:44:18,453 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:44:18,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:44:18,453 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:44:18,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:44:18,454 INFO L82 PathProgramCache]: Analyzing trace with hash -783182202, now seen corresponding path program 1 times [2020-10-29 12:44:18,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:44:18,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443852373] [2020-10-29 12:44:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:44:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:18,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:18,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:19,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:23,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:23,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 12:44:23,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:44:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:44:23,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:23,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:44:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 12:44:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:44:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:23,782 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:44:23,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:44:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:23,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:23,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:44:23,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:44:23,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:23,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:44:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:44:23,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:44:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:23,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:23,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:44:23,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:23,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:44:23,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:23,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:44:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:44:23,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:44:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:23,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:23,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:44:23,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:23,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:44:23,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:23,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:44:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:44:23,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:23,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:44:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:23,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:23,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:23,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:44:23,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:44:23,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:23,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:44:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:44:23,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:23,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:44:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:23,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:23,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:44:23,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:23,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:44:23,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:23,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:23,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:44:23,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:23,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:44:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:23,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:44:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:23,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:23,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:23,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:44:23,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:44:23,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:44:23,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:23,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:23,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:44:23,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:44:23,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:44:23,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 12:44:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:24,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:24,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:44:24,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:44:24,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:24,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:24,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:44:24,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:44:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:44:24,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:44:24,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443852373] [2020-10-29 12:44:24,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:44:24,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:44:24,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504803850] [2020-10-29 12:44:24,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:44:24,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:44:24,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:44:24,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:44:24,050 INFO L87 Difference]: Start difference. First operand 64270 states and 88574 transitions. Second operand 9 states. [2020-10-29 12:44:24,730 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:44:29,348 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:44:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:44:31,704 INFO L93 Difference]: Finished difference Result 129329 states and 179585 transitions. [2020-10-29 12:44:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:44:31,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-10-29 12:44:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:44:32,014 INFO L225 Difference]: With dead ends: 129329 [2020-10-29 12:44:32,014 INFO L226 Difference]: Without dead ends: 86255 [2020-10-29 12:44:32,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:44:32,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86255 states. [2020-10-29 12:44:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86255 to 79732. [2020-10-29 12:44:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79732 states. [2020-10-29 12:44:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79732 states to 79732 states and 109652 transitions. [2020-10-29 12:44:38,130 INFO L78 Accepts]: Start accepts. Automaton has 79732 states and 109652 transitions. Word has length 107 [2020-10-29 12:44:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:44:38,131 INFO L481 AbstractCegarLoop]: Abstraction has 79732 states and 109652 transitions. [2020-10-29 12:44:38,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:44:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 79732 states and 109652 transitions. [2020-10-29 12:44:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:44:38,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:44:38,175 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:44:38,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:44:38,176 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:44:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:44:38,177 INFO L82 PathProgramCache]: Analyzing trace with hash -381519826, now seen corresponding path program 1 times [2020-10-29 12:44:38,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:44:38,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843695996] [2020-10-29 12:44:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:44:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:38,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:38,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:38,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:43,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:43,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:44:43,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:44:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:44:43,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:43,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:44:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:44:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:44:43,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:43,494 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:44:43,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:44:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:43,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:43,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:43,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:44:43,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:44:43,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:43,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:44:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:44:43,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:43,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:44:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:43,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:43,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:43,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:43,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:43,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 12:44:43,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:44:43,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-29 12:44:43,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:43,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:44:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:44:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:44:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:43,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:44:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:43,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:43,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:43,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:44:43,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:44:43,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:43,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:44:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:44:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:44:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:44,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:44,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:44,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:44:44,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:44,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:44:44,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:44,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:44,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:44:44,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:44:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:44:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:44:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:44,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:44,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:44:44,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:44:44,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:44,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:44:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:44:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:44:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:44,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:44:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:44,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:44,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:44,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:44:44,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:44,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:44:44,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:44,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:44,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:44:44,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 12:44:44,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:44:44,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:44,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 12:44:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:44,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:44,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:44:44,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:44:44,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:44:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:44:44,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:44:44,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:44:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:44:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:44:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:44:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:44:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:44:44,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843695996] [2020-10-29 12:44:44,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:44:44,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:44:44,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81981689] [2020-10-29 12:44:44,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:44:44,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:44:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:44:44,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:44:44,210 INFO L87 Difference]: Start difference. First operand 79732 states and 109652 transitions. Second operand 10 states. [2020-10-29 12:44:44,535 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:44:44,885 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:44:45,213 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:44:45,698 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:44:46,030 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:44:53,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:44:53,364 INFO L93 Difference]: Finished difference Result 130884 states and 179623 transitions. [2020-10-29 12:44:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:44:53,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-10-29 12:44:53,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:44:53,605 INFO L225 Difference]: With dead ends: 130884 [2020-10-29 12:44:53,605 INFO L226 Difference]: Without dead ends: 52188 [2020-10-29 12:44:54,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:44:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52188 states. [2020-10-29 12:44:57,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52188 to 49389. [2020-10-29 12:44:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49389 states. [2020-10-29 12:44:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49389 states to 49389 states and 67780 transitions. [2020-10-29 12:44:57,286 INFO L78 Accepts]: Start accepts. Automaton has 49389 states and 67780 transitions. Word has length 108 [2020-10-29 12:44:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:44:57,286 INFO L481 AbstractCegarLoop]: Abstraction has 49389 states and 67780 transitions. [2020-10-29 12:44:57,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:44:57,286 INFO L276 IsEmpty]: Start isEmpty. Operand 49389 states and 67780 transitions. [2020-10-29 12:44:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 12:44:57,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:44:57,313 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:44:57,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:44:57,314 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:44:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:44:57,314 INFO L82 PathProgramCache]: Analyzing trace with hash -449249616, now seen corresponding path program 1 times [2020-10-29 12:44:57,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:44:57,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733155158] [2020-10-29 12:44:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:44:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:44:57,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:57,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:57,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:59,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:44:59,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:02,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:45:02,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 12:45:02,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:45:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:45:02,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:45:02,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:45:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:45:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:45:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 12:45:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:45:02,619 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:45:02,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:45:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:45:02,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:02,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:45:02,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:45:02,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:45:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:45:02,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:45:02,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:45:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:45:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:45:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:45:02,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:45:02,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:45:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:45:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:02,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:02,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:02,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:45:02,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 12:45:02,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:45:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 12:45:02,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:45:02,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:45:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:45:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:45:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:45:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:45:02,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:45:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:45:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:02,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:45:02,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:45:02,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:45:02,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:45:02,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:45:02,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:45:02,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:45:02,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:45:02,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:45:02,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:45:02,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:45:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:45:02,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:02,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:45:02,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:45:02,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:45:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:45:02,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:45:02,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:45:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:45:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:45:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:45:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:45:02,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:45:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:45:02,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:02,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:45:02,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:45:02,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:45:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:45:02,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:45:02,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:45:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:45:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:45:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:45:02,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:45:03,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 12:45:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:45:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:03,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:45:03,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:45:03,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:45:03,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:45:03,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:45:03,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:45:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:45:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:45:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:45:03,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:45:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 12:45:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:45:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:45:03,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:45:03,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:45:03,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:45:03,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:45:03,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:45:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:45:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:45:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:45:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:45:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:45:03,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733155158] [2020-10-29 12:45:03,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:45:03,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:45:03,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016587063] [2020-10-29 12:45:03,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:45:03,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:45:03,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:45:03,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:45:03,081 INFO L87 Difference]: Start difference. First operand 49389 states and 67780 transitions. Second operand 10 states. [2020-10-29 12:45:03,387 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:45:03,840 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:45:04,311 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:45:04,639 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 12:45:04,993 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 12:45:05,347 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:45:05,685 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 12:45:06,038 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:45:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:45:12,799 INFO L93 Difference]: Finished difference Result 97222 states and 133016 transitions. [2020-10-29 12:45:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:45:12,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-10-29 12:45:12,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:45:12,980 INFO L225 Difference]: With dead ends: 97222 [2020-10-29 12:45:12,980 INFO L226 Difference]: Without dead ends: 50096 [2020-10-29 12:45:13,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:45:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50096 states. [2020-10-29 12:45:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50096 to 46672. [2020-10-29 12:45:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46672 states. [2020-10-29 12:45:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46672 states to 46672 states and 63956 transitions. [2020-10-29 12:45:15,991 INFO L78 Accepts]: Start accepts. Automaton has 46672 states and 63956 transitions. Word has length 109 [2020-10-29 12:45:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:45:15,992 INFO L481 AbstractCegarLoop]: Abstraction has 46672 states and 63956 transitions. [2020-10-29 12:45:15,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:45:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 46672 states and 63956 transitions. [2020-10-29 12:45:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 12:45:16,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:45:16,017 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:45:16,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:45:16,017 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:45:16,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:45:16,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1767842013, now seen corresponding path program 1 times [2020-10-29 12:45:16,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:45:16,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255548137] [2020-10-29 12:45:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:45:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:45:16,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:16,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:16,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:45:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking...