/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:41:48,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:41:48,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:41:48,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:41:48,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:41:48,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:41:48,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:41:48,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:41:48,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:41:48,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:41:48,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:41:48,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:41:48,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:41:48,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:41:48,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:41:48,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:41:48,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:41:48,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:41:48,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:41:48,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:41:48,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:41:48,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:41:48,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:41:48,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:41:48,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:41:48,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:41:48,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:41:48,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:41:48,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:41:48,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:41:48,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:41:48,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:41:48,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:41:48,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:41:48,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:41:48,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:41:48,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:41:48,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:41:48,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:41:48,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:41:48,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:41:48,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:41:48,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:41:48,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:41:48,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:41:48,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:41:48,203 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:41:48,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:41:48,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:41:48,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:41:48,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:41:48,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:41:48,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:41:48,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:41:48,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:41:48,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:41:48,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:41:48,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:41:48,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:41:48,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:41:48,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:41:48,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:41:48,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:41:48,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:41:48,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:41:48,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:41:48,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:41:48,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:41:48,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:41:48,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:41:48,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:41:48,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:41:48,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:41:48,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:41:48,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:41:48,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:41:48,700 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:41:48,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-28 14:41:48,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df959e580/54544e885a16406cb95ef7eef5b2bb25/FLAGd8d52c896 [2020-10-28 14:41:49,534 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:41:49,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-28 14:41:49,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df959e580/54544e885a16406cb95ef7eef5b2bb25/FLAGd8d52c896 [2020-10-28 14:41:49,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df959e580/54544e885a16406cb95ef7eef5b2bb25 [2020-10-28 14:41:49,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:41:49,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:41:49,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:41:49,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:41:49,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:41:49,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:41:49" (1/1) ... [2020-10-28 14:41:49,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1800ece4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:49, skipping insertion in model container [2020-10-28 14:41:49,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:41:49" (1/1) ... [2020-10-28 14:41:49,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:41:49,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:41:50,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:41:50,358 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:41:50,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:41:50,501 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:41:50,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:50 WrapperNode [2020-10-28 14:41:50,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:41:50,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:41:50,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:41:50,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:41:50,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:50" (1/1) ... [2020-10-28 14:41:50,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:50" (1/1) ... [2020-10-28 14:41:50,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:50" (1/1) ... [2020-10-28 14:41:50,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:50" (1/1) ... [2020-10-28 14:41:50,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:50" (1/1) ... [2020-10-28 14:41:50,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:50" (1/1) ... [2020-10-28 14:41:50,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:50" (1/1) ... [2020-10-28 14:41:50,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:41:50,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:41:50,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:41:50,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:41:50,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:41:50,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:41:50,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:41:50,684 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:41:50,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:41:50,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:41:50,685 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:41:50,685 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-28 14:41:50,685 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-28 14:41:50,686 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-28 14:41:50,686 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-28 14:41:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-10-28 14:41:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:41:50,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:41:50,688 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:41:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:41:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:41:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:41:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:41:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:41:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:41:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:41:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:41:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:41:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:41:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:41:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:41:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:41:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:41:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:41:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:41:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:41:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:41:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:41:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:41:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:41:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:41:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:41:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:41:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:41:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:41:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:41:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:41:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:41:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:41:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:41:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:41:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:41:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:41:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:41:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:41:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:41:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:41:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:41:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:41:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:41:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:41:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:41:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:41:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:41:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:41:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:41:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:41:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:41:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:41:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:41:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:41:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:41:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:41:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:41:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:41:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:41:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:41:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:41:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:41:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:41:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:41:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:41:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:41:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:41:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:41:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:41:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:41:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:41:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:41:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:41:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:41:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:41:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:41:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:41:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:41:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:41:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:41:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:41:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:41:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:41:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:41:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:41:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:41:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:41:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:41:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:41:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:41:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:41:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:41:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:41:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:41:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:41:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:41:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:41:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:41:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:41:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:41:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:41:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:41:50,719 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:41:50,719 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:41:50,720 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:41:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:41:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:41:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:41:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:41:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:41:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:41:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:41:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-28 14:41:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:41:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:41:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-28 14:41:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:41:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-28 14:41:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:41:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-28 14:41:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-10-28 14:41:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:41:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:41:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:41:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:41:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:41:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:41:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:41:51,060 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:41:51,444 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:41:51,444 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 14:41:51,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:41:51 BoogieIcfgContainer [2020-10-28 14:41:51,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:41:51,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:41:51,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:41:51,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:41:51,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:41:49" (1/3) ... [2020-10-28 14:41:51,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bf79af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:41:51, skipping insertion in model container [2020-10-28 14:41:51,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:41:50" (2/3) ... [2020-10-28 14:41:51,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bf79af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:41:51, skipping insertion in model container [2020-10-28 14:41:51,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:41:51" (3/3) ... [2020-10-28 14:41:51,456 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-10-28 14:41:51,469 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:41:51,474 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:41:51,488 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:41:51,517 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:41:51,518 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:41:51,518 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:41:51,518 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:41:51,518 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:41:51,518 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:41:51,518 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:41:51,519 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:41:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-28 14:41:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:41:51,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:41:51,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:41:51,547 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:41:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:41:51,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1532112468, now seen corresponding path program 1 times [2020-10-28 14:41:51,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:41:51,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769061418] [2020-10-28 14:41:51,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:41:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:51,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:51,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:52,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 14:41:52,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:41:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-28 14:41:52,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:52,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:41:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 14:41:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:41:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:41:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:41:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:52,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:41:52,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:41:52,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:41:52,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:52,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:41:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:41:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:41:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:41:52,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:41:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:52,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:41:52,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:41:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:41:52,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:52,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:41:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:41:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:41:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:41:52,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 14:41:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:52,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:41:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:41:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:41:52,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:52,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:41:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:41:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:41:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:41:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:41:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:52,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:41:52,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:41:52,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:41:52,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:52,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:52,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:41:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:41:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:41:52,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:41:52,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:41:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:52,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:41:52,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:41:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:41:52,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:52,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:41:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:41:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:41:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:41:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:41:52,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769061418] [2020-10-28 14:41:52,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:41:52,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:41:52,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438128732] [2020-10-28 14:41:52,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:41:52,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:41:52,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:41:52,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:41:52,286 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-10-28 14:41:52,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:41:52,558 INFO L93 Difference]: Finished difference Result 143 states and 194 transitions. [2020-10-28 14:41:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:41:52,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-28 14:41:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:41:52,571 INFO L225 Difference]: With dead ends: 143 [2020-10-28 14:41:52,571 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 14:41:52,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:41:52,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 14:41:52,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-10-28 14:41:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 14:41:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-28 14:41:52,627 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2020-10-28 14:41:52,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:41:52,628 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-28 14:41:52,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:41:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-28 14:41:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:41:52,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:41:52,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:41:52,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:41:52,632 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:41:52,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:41:52,633 INFO L82 PathProgramCache]: Analyzing trace with hash 214237475, now seen corresponding path program 1 times [2020-10-28 14:41:52,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:41:52,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43057911] [2020-10-28 14:41:52,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:41:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:52,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:52,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:53,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:57,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:57,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 14:41:57,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:41:57,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 14:41:57,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:57,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:57,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:41:57,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:41:57,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:41:57,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:41:57,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:41:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:57,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:57,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:41:57,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:41:57,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:41:57,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:57,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:57,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:41:57,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:41:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:41:57,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:41:57,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:41:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:57,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:57,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:57,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:57,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:41:57,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:41:57,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:41:57,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:57,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:41:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:41:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:41:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:41:57,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:41:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:57,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:57,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:57,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:41:57,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:41:57,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:41:57,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:57,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:41:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 14:41:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:41:57,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:41:57,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:41:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:57,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:57,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:41:57,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:41:57,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:41:57,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:57,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:41:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:41:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:41:57,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:41:57,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:41:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:57,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:41:57,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:41:57,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:41:57,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:41:57,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:41:57,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:41:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:41:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:41:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:41:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:41:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:41:57,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43057911] [2020-10-28 14:41:57,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:41:57,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:41:57,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805041566] [2020-10-28 14:41:57,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:41:57,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:41:57,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:41:57,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:41:57,852 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 7 states. [2020-10-28 14:41:58,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:41:58,276 INFO L93 Difference]: Finished difference Result 125 states and 154 transitions. [2020-10-28 14:41:58,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:41:58,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-28 14:41:58,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:41:58,279 INFO L225 Difference]: With dead ends: 125 [2020-10-28 14:41:58,279 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 14:41:58,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:41:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 14:41:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2020-10-28 14:41:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 14:41:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2020-10-28 14:41:58,296 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 46 [2020-10-28 14:41:58,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:41:58,297 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2020-10-28 14:41:58,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:41:58,297 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2020-10-28 14:41:58,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:41:58,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:41:58,302 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:41:58,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:41:58,302 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:41:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:41:58,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1243596773, now seen corresponding path program 1 times [2020-10-28 14:41:58,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:41:58,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787422206] [2020-10-28 14:41:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:41:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:41:58,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:58,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:41:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:02,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:02,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 14:42:02,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:42:02,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3713 [2020-10-28 14:42:02,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:02,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:42:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:42:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:42:02,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:42:02,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:02,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:02,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:02,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:02,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:42:02,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:02,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:02,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:02,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:02,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:02,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:42:02,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:02,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:02,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:02,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:02,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:42:02,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:02,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:42:02,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:02,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:42:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:02,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:02,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:02,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:02,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:42:02,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:42:02,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:02,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:42:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:42:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:02,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:42:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:02,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:02,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:02,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:02,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:02,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:42:02,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:02,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:02,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:02,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:02,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:42:02,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:02,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:42:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:02,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:02,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:42:02,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:42:02,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:02,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:42:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:02,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:42:02,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787422206] [2020-10-28 14:42:02,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:02,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:42:02,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651470069] [2020-10-28 14:42:02,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:42:02,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:02,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:42:02,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:42:02,390 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 11 states. [2020-10-28 14:42:02,726 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-28 14:42:03,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:03,429 INFO L93 Difference]: Finished difference Result 151 states and 195 transitions. [2020-10-28 14:42:03,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:42:03,430 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-28 14:42:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:03,433 INFO L225 Difference]: With dead ends: 151 [2020-10-28 14:42:03,433 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 14:42:03,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:42:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 14:42:03,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 80. [2020-10-28 14:42:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 14:42:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-10-28 14:42:03,472 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 46 [2020-10-28 14:42:03,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:03,473 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-10-28 14:42:03,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:42:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-10-28 14:42:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:42:03,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:03,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:03,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:42:03,480 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:03,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:03,481 INFO L82 PathProgramCache]: Analyzing trace with hash 820894947, now seen corresponding path program 1 times [2020-10-28 14:42:03,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:03,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261284177] [2020-10-28 14:42:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:03,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:07,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:07,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 14:42:07,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:42:07,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3561 [2020-10-28 14:42:07,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:07,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:07,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:42:07,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:42:07,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:42:07,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:07,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:07,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:07,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:07,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:07,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:07,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:07,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:07,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:07,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:07,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:07,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:07,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:07,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:07,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:42:07,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:07,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:42:07,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:07,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:42:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:07,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:07,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:42:07,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:07,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:42:07,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:07,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:42:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:42:07,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:42:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:07,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:07,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:07,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:07,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:42:07,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:07,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:42:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:07,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 14:42:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:07,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:07,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:07,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:42:07,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:07,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:42:07,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:07,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:42:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:07,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:42:07,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261284177] [2020-10-28 14:42:07,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:07,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:42:07,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676794747] [2020-10-28 14:42:07,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:42:07,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:07,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:42:07,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:42:07,284 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 11 states. [2020-10-28 14:42:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:07,977 INFO L93 Difference]: Finished difference Result 153 states and 196 transitions. [2020-10-28 14:42:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:42:07,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-28 14:42:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:07,980 INFO L225 Difference]: With dead ends: 153 [2020-10-28 14:42:07,980 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 14:42:07,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:42:07,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 14:42:07,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 85. [2020-10-28 14:42:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 14:42:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2020-10-28 14:42:08,000 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 46 [2020-10-28 14:42:08,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:08,000 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2020-10-28 14:42:08,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:42:08,000 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2020-10-28 14:42:08,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:42:08,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:08,002 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:08,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:42:08,003 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:08,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:08,004 INFO L82 PathProgramCache]: Analyzing trace with hash 505893923, now seen corresponding path program 1 times [2020-10-28 14:42:08,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:08,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942448451] [2020-10-28 14:42:08,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:08,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:13,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 14:42:13,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:42:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 14:42:13,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:13,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:42:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 14:42:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:42:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:42:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:13,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:13,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:13,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:13,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:13,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:13,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:13,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:42:13,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:42:13,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:42:13,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:13,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:13,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:13,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:42:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:13,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:13,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:42:13,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:13,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:13,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:13,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:13,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:13,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:13,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:13,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:13,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 14:42:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:13,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:13,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:13,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:42:13,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:13,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:42:13,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:13,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 14:42:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:13,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:13,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:42:13,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:13,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:42:13,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:13,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:13,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:13,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:42:13,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:13,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:42:13,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942448451] [2020-10-28 14:42:13,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:42:13,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 14:42:13,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469546524] [2020-10-28 14:42:13,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:42:13,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:13,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:42:13,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:42:13,242 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand 9 states. [2020-10-28 14:42:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:13,677 INFO L93 Difference]: Finished difference Result 147 states and 184 transitions. [2020-10-28 14:42:13,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:42:13,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-28 14:42:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:13,679 INFO L225 Difference]: With dead ends: 147 [2020-10-28 14:42:13,680 INFO L226 Difference]: Without dead ends: 103 [2020-10-28 14:42:13,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:42:13,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-28 14:42:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2020-10-28 14:42:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 14:42:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2020-10-28 14:42:13,696 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 49 [2020-10-28 14:42:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:13,696 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2020-10-28 14:42:13,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:42:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2020-10-28 14:42:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:42:13,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:13,698 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:13,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:42:13,698 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:13,699 INFO L82 PathProgramCache]: Analyzing trace with hash -505223327, now seen corresponding path program 1 times [2020-10-28 14:42:13,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:13,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830476606] [2020-10-28 14:42:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:13,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:13,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:15,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:15,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:18,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:18,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 14:42:18,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 14:42:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4287 [2020-10-28 14:42:18,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:18,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:42:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:42:18,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:18,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:18,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:18,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:18,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:42:18,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:18,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:18,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:18,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:18,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:18,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:18,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:42:18,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:18,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 14:42:18,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:18,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:42:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:18,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:42:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:18,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:18,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:42:18,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:42:18,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:18,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 14:42:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:18,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 14:42:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:18,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:18,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:18,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:18,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:18,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:42:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:18,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 14:42:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:18,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:18,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:18,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:42:18,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:42:18,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:18,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:42:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:42:18,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830476606] [2020-10-28 14:42:18,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:18,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:42:18,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064271675] [2020-10-28 14:42:18,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:42:18,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:18,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:42:18,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:42:18,289 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand 8 states. [2020-10-28 14:42:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:19,016 INFO L93 Difference]: Finished difference Result 199 states and 252 transitions. [2020-10-28 14:42:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:42:19,016 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-28 14:42:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:19,018 INFO L225 Difference]: With dead ends: 199 [2020-10-28 14:42:19,018 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 14:42:19,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:42:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 14:42:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2020-10-28 14:42:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 14:42:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2020-10-28 14:42:19,035 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 49 [2020-10-28 14:42:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:19,035 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2020-10-28 14:42:19,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:42:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2020-10-28 14:42:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:42:19,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:19,036 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:19,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:42:19,037 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:19,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:19,037 INFO L82 PathProgramCache]: Analyzing trace with hash 524135971, now seen corresponding path program 2 times [2020-10-28 14:42:19,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:19,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925993488] [2020-10-28 14:42:19,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:19,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:19,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:20,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:20,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 14:42:20,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:42:20,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1302 [2020-10-28 14:42:20,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:20,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:42:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:42:20,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:42:20,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:20,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:20,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:20,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:20,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:20,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:42:20,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:20,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:20,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:20,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:20,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:20,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:20,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:20,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:20,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:42:20,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:20,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:42:20,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:20,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:42:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:42:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:42:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:20,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:20,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:20,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:42:20,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:42:20,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:20,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:42:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:42:20,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:20,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 14:42:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:20,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:20,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:20,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:20,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:42:20,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:20,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:20,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:20,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:42:20,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:20,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 14:42:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:20,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:20,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:42:20,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:20,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:42:20,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:20,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:20,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:20,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:42:20,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:20,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:42:20,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925993488] [2020-10-28 14:42:20,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:20,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:42:20,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466170007] [2020-10-28 14:42:20,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:42:20,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:20,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:42:20,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:42:20,658 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand 12 states. [2020-10-28 14:42:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:21,738 INFO L93 Difference]: Finished difference Result 173 states and 216 transitions. [2020-10-28 14:42:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:42:21,738 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-28 14:42:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:21,741 INFO L225 Difference]: With dead ends: 173 [2020-10-28 14:42:21,741 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 14:42:21,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:42:21,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 14:42:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 93. [2020-10-28 14:42:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 14:42:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions. [2020-10-28 14:42:21,756 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 49 [2020-10-28 14:42:21,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:21,757 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions. [2020-10-28 14:42:21,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:42:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions. [2020-10-28 14:42:21,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:42:21,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:21,758 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:21,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:42:21,758 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:21,759 INFO L82 PathProgramCache]: Analyzing trace with hash 101434145, now seen corresponding path program 1 times [2020-10-28 14:42:21,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:21,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646675461] [2020-10-28 14:42:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:21,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:22,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:22,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 14:42:22,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:22,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-28 14:42:22,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:22,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:42:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:42:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:42:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:22,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:22,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:22,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:22,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:22,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:42:22,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:22,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:22,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:22,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:22,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:22,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:22,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:22,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:22,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:42:22,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:42:22,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:22,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:42:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:42:22,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:42:22,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:42:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:22,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:22,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:22,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:42:22,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:22,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:42:22,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:22,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:42:22,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:22,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 14:42:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:22,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:22,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:22,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:22,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:22,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:42:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:22,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 14:42:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:22,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:22,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:22,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:42:22,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:22,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:42:22,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:22,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:42:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:22,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:42:22,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646675461] [2020-10-28 14:42:22,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:22,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:42:22,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903862817] [2020-10-28 14:42:22,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:42:22,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:22,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:42:22,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:42:22,707 INFO L87 Difference]: Start difference. First operand 93 states and 112 transitions. Second operand 12 states. [2020-10-28 14:42:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:23,568 INFO L93 Difference]: Finished difference Result 171 states and 213 transitions. [2020-10-28 14:42:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:42:23,569 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-28 14:42:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:23,571 INFO L225 Difference]: With dead ends: 171 [2020-10-28 14:42:23,571 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 14:42:23,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:42:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 14:42:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 85. [2020-10-28 14:42:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 14:42:23,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2020-10-28 14:42:23,584 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 49 [2020-10-28 14:42:23,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:23,584 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2020-10-28 14:42:23,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:42:23,584 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2020-10-28 14:42:23,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 14:42:23,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:23,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:23,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:42:23,586 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:23,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:23,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1066812936, now seen corresponding path program 1 times [2020-10-28 14:42:23,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:23,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021924442] [2020-10-28 14:42:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:23,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:23,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:28,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:28,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 14:42:28,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:42:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 14:42:28,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:28,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:42:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 14:42:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:42:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:28,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:28,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:28,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:28,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:28,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:28,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:28,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:28,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:28,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:28,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:28,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:28,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:28,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:28,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:28,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:28,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:28,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:28,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:28,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:42:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:28,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:28,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:28,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:42:28,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:28,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:42:28,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:28,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:42:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:28,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 14:42:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:28,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:28,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:28,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:42:28,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:28,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:42:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:42:28,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:28,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 14:42:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:28,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:28,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:42:28,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:28,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:42:28,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:28,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:42:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:42:28,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:42:28,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021924442] [2020-10-28 14:42:28,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:42:28,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 14:42:28,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487312092] [2020-10-28 14:42:28,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:42:28,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:28,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:42:28,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:42:28,859 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand 12 states. [2020-10-28 14:42:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:29,401 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2020-10-28 14:42:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:42:29,402 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-28 14:42:29,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:29,405 INFO L225 Difference]: With dead ends: 109 [2020-10-28 14:42:29,405 INFO L226 Difference]: Without dead ends: 103 [2020-10-28 14:42:29,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:42:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-28 14:42:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2020-10-28 14:42:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 14:42:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 116 transitions. [2020-10-28 14:42:29,419 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 116 transitions. Word has length 50 [2020-10-28 14:42:29,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:29,419 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 116 transitions. [2020-10-28 14:42:29,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:42:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 116 transitions. [2020-10-28 14:42:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 14:42:29,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:29,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:29,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:42:29,421 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:29,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1706223967, now seen corresponding path program 1 times [2020-10-28 14:42:29,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:29,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068924311] [2020-10-28 14:42:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:31,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:31,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:42:31,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:42:31,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2093 [2020-10-28 14:42:31,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:31,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:42:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:42:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:42:31,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:31,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:31,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:31,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:31,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:42:31,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:31,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:31,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:42:31,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:31,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:31,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:31,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:42:31,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:31,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:42:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:31,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:42:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:31,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:31,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:42:31,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:31,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:42:31,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:31,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:42:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:42:31,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 14:42:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:31,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:31,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:31,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:31,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:31,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:42:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 14:42:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:31,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:31,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:31,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:42:31,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:31,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:31,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:31,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 14:42:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:42:31,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068924311] [2020-10-28 14:42:31,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:31,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:42:31,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452381353] [2020-10-28 14:42:31,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:42:31,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:31,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:42:31,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:42:31,792 INFO L87 Difference]: Start difference. First operand 95 states and 116 transitions. Second operand 12 states. [2020-10-28 14:42:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:32,408 INFO L93 Difference]: Finished difference Result 201 states and 256 transitions. [2020-10-28 14:42:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:42:32,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-28 14:42:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:32,411 INFO L225 Difference]: With dead ends: 201 [2020-10-28 14:42:32,411 INFO L226 Difference]: Without dead ends: 136 [2020-10-28 14:42:32,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:42:32,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-28 14:42:32,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 107. [2020-10-28 14:42:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 14:42:32,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2020-10-28 14:42:32,445 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 51 [2020-10-28 14:42:32,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:32,446 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2020-10-28 14:42:32,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:42:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2020-10-28 14:42:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:42:32,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:32,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:32,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:42:32,451 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:32,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:32,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2083752353, now seen corresponding path program 1 times [2020-10-28 14:42:32,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:32,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154154118] [2020-10-28 14:42:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:32,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:34,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:34,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:42:34,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:42:34,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2413 [2020-10-28 14:42:34,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:34,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:42:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:42:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:42:34,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:34,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:34,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:34,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:34,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:34,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:34,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:34,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:34,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:34,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:34,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:34,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:34,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:34,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:34,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:34,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:42:34,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:34,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:42:34,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:34,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:42:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:42:34,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:35,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:42:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:35,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:35,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:35,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:42:35,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:35,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:42:35,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:35,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:42:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:42:35,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:42:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:35,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:35,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:35,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:35,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:35,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:42:35,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:35,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:42:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:35,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:35,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 14:42:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:35,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:35,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:35,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:42:35,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:42:35,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:35,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 14:42:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:35,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:42:35,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154154118] [2020-10-28 14:42:35,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:35,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:42:35,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538475094] [2020-10-28 14:42:35,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:42:35,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:35,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:42:35,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:42:35,167 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand 13 states. [2020-10-28 14:42:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:36,197 INFO L93 Difference]: Finished difference Result 207 states and 264 transitions. [2020-10-28 14:42:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:42:36,198 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-28 14:42:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:36,200 INFO L225 Difference]: With dead ends: 207 [2020-10-28 14:42:36,200 INFO L226 Difference]: Without dead ends: 133 [2020-10-28 14:42:36,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:42:36,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-28 14:42:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2020-10-28 14:42:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 14:42:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 119 transitions. [2020-10-28 14:42:36,230 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 119 transitions. Word has length 54 [2020-10-28 14:42:36,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:36,230 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 119 transitions. [2020-10-28 14:42:36,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:42:36,230 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 119 transitions. [2020-10-28 14:42:36,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 14:42:36,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:36,231 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:36,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:42:36,232 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:36,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:36,233 INFO L82 PathProgramCache]: Analyzing trace with hash 280144856, now seen corresponding path program 2 times [2020-10-28 14:42:36,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:36,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023395328] [2020-10-28 14:42:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:36,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:36,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:36,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:42:36,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-28 14:42:36,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:36,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:42:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 14:42:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 14:42:36,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:36,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:36,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:36,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:36,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:36,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:36,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:36,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:36,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:36,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:36,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:36,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:36,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:42:36,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:36,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:36,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:42:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:36,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:36,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:42:36,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 14:42:36,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:36,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:42:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:42:36,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:36,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:42:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:36,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:36,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:36,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:42:36,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:36,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:42:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:42:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:36,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 14:42:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:37,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:37,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:42:37,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:42:37,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:37,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:37,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:42:37,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:42:37,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023395328] [2020-10-28 14:42:37,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:37,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:42:37,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503534224] [2020-10-28 14:42:37,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:42:37,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:37,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:42:37,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:42:37,088 INFO L87 Difference]: Start difference. First operand 99 states and 119 transitions. Second operand 14 states. [2020-10-28 14:42:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:37,905 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2020-10-28 14:42:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:42:37,905 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-28 14:42:37,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:37,907 INFO L225 Difference]: With dead ends: 117 [2020-10-28 14:42:37,907 INFO L226 Difference]: Without dead ends: 111 [2020-10-28 14:42:37,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:42:37,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-28 14:42:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2020-10-28 14:42:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-28 14:42:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2020-10-28 14:42:37,919 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 55 [2020-10-28 14:42:37,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:37,919 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2020-10-28 14:42:37,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:42:37,919 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2020-10-28 14:42:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:42:37,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:37,920 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:37,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:42:37,921 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:37,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1205650033, now seen corresponding path program 3 times [2020-10-28 14:42:37,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:37,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759578364] [2020-10-28 14:42:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:37,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:41,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:41,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:42:41,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:42:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3525 [2020-10-28 14:42:41,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:41,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:42:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:42:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 14:42:41,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:41,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:41,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:41,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:41,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:41,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:41,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:41,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:41,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:41,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:41,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:41,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:42:41,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:41,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:42:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:42:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:42:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:41,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:41,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:41,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:42:41,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 14:42:41,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:41,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:42:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:42:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:42:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:41,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:41,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:41,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:41,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:42:41,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:41,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:42:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:42:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 14:42:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:41,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:41,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:41,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:41,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:42:41,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:41,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:42:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:42:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:42:41,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759578364] [2020-10-28 14:42:41,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:41,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:42:41,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218639129] [2020-10-28 14:42:41,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:42:41,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:42:41,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:42:41,920 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand 16 states. [2020-10-28 14:42:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:42,928 INFO L93 Difference]: Finished difference Result 153 states and 196 transitions. [2020-10-28 14:42:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:42:42,928 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-10-28 14:42:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:42,931 INFO L225 Difference]: With dead ends: 153 [2020-10-28 14:42:42,931 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 14:42:42,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:42:42,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 14:42:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 117. [2020-10-28 14:42:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-28 14:42:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 144 transitions. [2020-10-28 14:42:42,947 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 144 transitions. Word has length 56 [2020-10-28 14:42:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:42,947 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 144 transitions. [2020-10-28 14:42:42,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:42:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 144 transitions. [2020-10-28 14:42:42,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 14:42:42,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:42,949 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:42,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:42:42,949 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:42,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:42,949 INFO L82 PathProgramCache]: Analyzing trace with hash -20651336, now seen corresponding path program 4 times [2020-10-28 14:42:42,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:42,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298215294] [2020-10-28 14:42:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:43,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:43,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:43,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:42:43,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-28 14:42:43,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:43,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:42:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:42:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 14:42:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:43,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:43,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:43,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:43,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:42:43,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:43,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:43,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:43,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:43,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:43,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:43,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:42:43,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:43,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:43,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:43,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:42:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:43,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:43,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:42:43,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:43,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 14:42:43,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:43,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:42:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:42:43,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:42:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:44,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:44,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:44,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:44,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:44,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:42:44,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:44,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:42:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:42:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:42:44,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 14:42:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:44,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:44,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:42:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:42:44,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:44,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:42:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:42:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:42:44,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298215294] [2020-10-28 14:42:44,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:44,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:42:44,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959421666] [2020-10-28 14:42:44,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:42:44,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:44,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:42:44,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:42:44,441 INFO L87 Difference]: Start difference. First operand 117 states and 144 transitions. Second operand 16 states. [2020-10-28 14:42:45,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:45,833 INFO L93 Difference]: Finished difference Result 165 states and 211 transitions. [2020-10-28 14:42:45,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:42:45,834 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-28 14:42:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:45,835 INFO L225 Difference]: With dead ends: 165 [2020-10-28 14:42:45,836 INFO L226 Difference]: Without dead ends: 159 [2020-10-28 14:42:45,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:42:45,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-28 14:42:45,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2020-10-28 14:42:45,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-28 14:42:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 189 transitions. [2020-10-28 14:42:45,860 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 189 transitions. Word has length 57 [2020-10-28 14:42:45,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:45,860 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 189 transitions. [2020-10-28 14:42:45,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:42:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 189 transitions. [2020-10-28 14:42:45,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 14:42:45,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:45,862 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:45,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:42:45,862 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1940397393, now seen corresponding path program 5 times [2020-10-28 14:42:45,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:45,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029736528] [2020-10-28 14:42:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:46,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:46,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:42:46,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-10-28 14:42:46,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:46,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:42:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:42:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 14:42:46,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:46,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:46,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:46,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:46,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:46,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:42:46,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:46,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:46,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:46,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:46,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:46,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:46,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:46,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:46,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:42:46,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:46,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:46,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:42:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:47,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:47,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:42:47,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:47,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:42:47,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:47,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:42:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:42:47,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:42:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:47,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:47,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:47,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:47,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:42:47,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:47,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:42:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:42:47,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 14:42:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:47,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:47,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:47,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 14:42:47,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:42:47,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:47,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:42:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:42:47,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:42:47,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029736528] [2020-10-28 14:42:47,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:47,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 14:42:47,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712951568] [2020-10-28 14:42:47,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 14:42:47,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:47,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 14:42:47,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:42:47,900 INFO L87 Difference]: Start difference. First operand 148 states and 189 transitions. Second operand 17 states. [2020-10-28 14:42:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:49,846 INFO L93 Difference]: Finished difference Result 169 states and 218 transitions. [2020-10-28 14:42:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:42:49,851 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-28 14:42:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:49,852 INFO L225 Difference]: With dead ends: 169 [2020-10-28 14:42:49,852 INFO L226 Difference]: Without dead ends: 163 [2020-10-28 14:42:49,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:42:49,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-28 14:42:49,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 149. [2020-10-28 14:42:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-28 14:42:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 191 transitions. [2020-10-28 14:42:49,871 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 191 transitions. Word has length 58 [2020-10-28 14:42:49,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:49,872 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 191 transitions. [2020-10-28 14:42:49,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 14:42:49,872 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 191 transitions. [2020-10-28 14:42:49,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 14:42:49,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:49,873 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:49,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:42:49,874 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:49,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:49,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1322983016, now seen corresponding path program 6 times [2020-10-28 14:42:49,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:49,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345236948] [2020-10-28 14:42:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:50,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:50,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 14:42:50,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:42:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-10-28 14:42:50,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:50,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:42:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:42:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 14:42:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:50,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:42:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:50,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:50,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:42:50,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:42:50,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:50,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:50,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 14:42:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:50,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:50,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:50,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:50,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:42:50,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:50,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:42:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:42:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:50,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:42:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:51,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:51,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:42:51,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 14:42:51,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:51,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:42:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:42:51,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:42:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:51,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:51,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:51,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:42:51,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:51,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:42:51,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:51,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:42:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:42:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:42:51,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:51,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 14:42:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:42:51,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:42:51,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:42:51,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:42:51,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:42:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:42:51,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:42:51,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:42:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:42:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:42:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:42:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:42:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:42:51,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345236948] [2020-10-28 14:42:51,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:42:51,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 14:42:51,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551325839] [2020-10-28 14:42:51,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 14:42:51,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:42:51,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 14:42:51,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:42:51,826 INFO L87 Difference]: Start difference. First operand 149 states and 191 transitions. Second operand 18 states. [2020-10-28 14:42:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:42:54,076 INFO L93 Difference]: Finished difference Result 173 states and 225 transitions. [2020-10-28 14:42:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:42:54,077 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-10-28 14:42:54,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:42:54,079 INFO L225 Difference]: With dead ends: 173 [2020-10-28 14:42:54,080 INFO L226 Difference]: Without dead ends: 167 [2020-10-28 14:42:54,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:42:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-28 14:42:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 150. [2020-10-28 14:42:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-28 14:42:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 193 transitions. [2020-10-28 14:42:54,100 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 193 transitions. Word has length 59 [2020-10-28 14:42:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:42:54,101 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 193 transitions. [2020-10-28 14:42:54,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 14:42:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 193 transitions. [2020-10-28 14:42:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 14:42:54,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:42:54,103 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:42:54,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:42:54,103 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:42:54,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:42:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash -716872415, now seen corresponding path program 1 times [2020-10-28 14:42:54,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:42:54,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643622874] [2020-10-28 14:42:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:42:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:42:54,132 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:42:54,132 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:42:54,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:42:54,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:42:54 BoogieIcfgContainer [2020-10-28 14:42:54,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:42:54,170 INFO L168 Benchmark]: Toolchain (without parser) took 64321.06 ms. Allocated memory was 154.1 MB in the beginning and 471.9 MB in the end (delta: 317.7 MB). Free memory was 127.6 MB in the beginning and 441.7 MB in the end (delta: -314.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:42:54,170 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory is still 100.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:42:54,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.72 ms. Allocated memory is still 154.1 MB. Free memory was 126.9 MB in the beginning and 103.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:42:54,172 INFO L168 Benchmark]: Boogie Preprocessor took 95.60 ms. Allocated memory is still 154.1 MB. Free memory was 103.8 MB in the beginning and 135.4 MB in the end (delta: -31.6 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:42:54,172 INFO L168 Benchmark]: RCFGBuilder took 846.18 ms. Allocated memory is still 154.1 MB. Free memory was 135.4 MB in the beginning and 132.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 48.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:42:54,173 INFO L168 Benchmark]: TraceAbstraction took 62720.06 ms. Allocated memory was 154.1 MB in the beginning and 471.9 MB in the end (delta: 317.7 MB). Free memory was 132.1 MB in the beginning and 441.7 MB in the end (delta: -309.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:42:54,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory is still 100.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 647.72 ms. Allocated memory is still 154.1 MB. Free memory was 126.9 MB in the beginning and 103.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.60 ms. Allocated memory is still 154.1 MB. Free memory was 103.8 MB in the beginning and 135.4 MB in the end (delta: -31.6 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 846.18 ms. Allocated memory is still 154.1 MB. Free memory was 135.4 MB in the beginning and 132.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 48.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 62720.06 ms. Allocated memory was 154.1 MB in the beginning and 471.9 MB in the end (delta: 317.7 MB). Free memory was 132.1 MB in the beginning and 441.7 MB in the end (delta: -309.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] CALL, EXPR _get_nondet_int(2, 5) [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L627] RET, EXPR _get_nondet_int(2, 5) [L627] const int len = _get_nondet_int(2, 5); [L628] SLL s = sll_create(len); [L628] CALL, EXPR sll_create(len) [L575] SLL head = ((void *)0); [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND FALSE !(len-- > 0) [L584] return head; [L628] RET, EXPR sll_create(len) [L628] SLL s = sll_create(len); [L629] CALL, EXPR _get_nondet_int(0, len - 1) [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND TRUE len < until && __VERIFIER_nondet_int() [L622] len++ [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L629] RET, EXPR _get_nondet_int(0, len - 1) [L629] const int k = _get_nondet_int(0, len - 1); [L630] int i = 0; [L631] i < k && __VERIFIER_nondet_int() [L631] i < k && __VERIFIER_nondet_int() [L631] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L636] EXPR \read(s) [L636] CALL, EXPR sll_length(s) [L587] int len = 0; [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND FALSE !(\read(head)) [L592] return len; [L636] RET, EXPR sll_length(s) [L636] COND TRUE k + len != sll_length(s) [L641] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_nondet_insert-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 62.6s, OverallIterations: 17, TraceHistogramMax: 5, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 996 SDtfs, 1332 SDslu, 4890 SDs, 0 SdLazy, 6809 SolverSat, 591 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 451 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 292 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 46.2s InterpolantComputationTime, 872 NumberOfCodeBlocks, 872 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 797 ConstructedInterpolants, 0 QuantifiedInterpolants, 949606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 88/223 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...